Compare commits
1
Commits
| Author | SHA1 | Date | |
|---|---|---|---|
 jens
|
f91e762e94 |
@@ -0,0 +1,56 @@
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; -------------------------------------------------
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; PROJECT "dctest"
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; -------------------------------------------------
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include "../../../jasm/cregs.inc.jsm"
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; -------------------------------------------------
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xmem
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org 4
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konst: dc 0x01, 0x12,"A"
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gap1: db 16
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mesg: dc "Hallo", 13,0x0A, 0
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name: dc "Jens",0
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msg1: dc "Welcome to JASM CPU",0
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msg2: dc "Ready",0
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msg3: dc "Testing",0
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msg4: dc "Passed",0
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msg5: dc "Error",0
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crlf: dc 0x0D, 0x0A
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org 0x00
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shit: db 4
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cmem 0
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org 8
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cram1: db 16
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cram2: db 6
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cram3: db 4
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cmem 1
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cram4: db 8
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cram5: db 8
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org 0x20
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cram6: db 8
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cram7: db 4
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reg_revision: equ 0x00
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reg_testid: equ 0x01
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; -------------------------------------------------
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code
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org 0x000
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reset: jmp start
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; -------------------------------------------------
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org 0x001
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int_vec: jmp isr
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; -------------------------------------------------
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org 0x010
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start: jmp start
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; -------------------------------------------------
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isr: reti
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@@ -0,0 +1,212 @@
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# ----------------------------------------------------------------------
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# Project: JCPU, a portable 8-bit RISC CPU written in VHDL
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# This file: The ROM file for upload to target over JTAG
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#
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# Copyright (C) 2007 J. Ahrensfeld
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# For questions and ideas, please contact the author at jens@jayfield.org
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#
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# ---------------------------------------------------------------------
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# ---------------------------------------------------------------------
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# For Chipscope 9.1
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# ---------------------------------------------------------------------
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# Source JTAG/TCL frame work
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cd $env(CHIPSCOPE)\\bin\\nt
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source csejtag.tcl
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namespace import ::chipscope::*
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# Platform USB Cable
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set PLATFORM_USB_CABLE_ARGS [list "port=USB2" "frequency=6000000"]
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# frequency="24000000 | 12000000 | 6000000 | 3000000 | 1500000 | 750000"
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# Create session
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set handle [::chipscope::csejtag_session create 0]
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# Open JTAG and lock
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set open_result [::chipscope::csejtag_target open $handle $CSEJTAG_TARGET_PLATFORMUSB 0 $PLATFORM_USB_CABLE_ARGS]
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set lock_result [::chipscope::csejtag_target lock $handle 1000]
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set devlist [::chipscope::csejtag_tap autodetect_chain $handle $CSEJTAG_SCAN_DEFAULT]
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# Get Device ID
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set devtype "Virtex-4SX"
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set devid 2
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set irlength [::chipscope::csejtag_tap get_irlength $handle $devid]
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set idcode [::chipscope::csejtag_tap get_device_idcode $handle $devid]
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set CSE_OP $CSEJTAG_SHIFT_READWRITE
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set CSE_ES $CSEJTAG_RUN_TEST_IDLE
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# Write Program
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# JASM_ROM_INSERT_HERE
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# Assembled from dctest.jsm
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# ---------------------------------------------------------------
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# Shift the USER2 Instruction (b1111000010) into the Instruction Register of FPGA
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# User 1
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set result [::chipscope::csejtag_tap shift_device_ir $handle $devid $CSE_OP $CSE_ES 0 $irlength "3C2"]
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# 0x000: JMP 0x010
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00030010"
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# 0x001: JMP 0x011
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00130011"
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# 0x002:
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00200000"
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# 0x003:
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00300000"
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# 0x004:
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00400000"
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# 0x005:
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00500000"
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# 0x006:
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00600000"
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# 0x007:
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00700000"
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# 0x008:
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00800000"
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# 0x009:
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00900000"
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# 0x00A:
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00A00000"
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# 0x00B:
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00B00000"
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# 0x00C:
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00C00000"
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# 0x00D:
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00D00000"
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# 0x00E:
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00E00000"
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# 0x00F:
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00F00000"
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# 0x010: JMP 0x010
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01030010"
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# 0x011: RETI
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0113F000"
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# Assembled from dctest.jsm
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# ---------------------------------------------------------------
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# Shift the USER2 Instruction (b1111000011) into the Instruction Register of FPGA
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# User 2
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set result [::chipscope::csejtag_tap shift_device_ir $handle $devid $CSE_OP $CSE_ES 0 $irlength "3C3"]
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0000"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0100"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0200"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0300"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0401"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0512"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0641"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0700"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0800"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0900"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0A00"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0B00"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0C00"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0D00"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0E00"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "0F00"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "1000"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "1100"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "1200"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "1300"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "1400"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "1500"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "1600"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "1748"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "1861"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "196C"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "1A6C"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "1B6F"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "1C0D"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "1D0A"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "1E00"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "1F4A"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "2065"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "216E"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "2273"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "2300"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "2457"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "2565"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "266C"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "2763"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "286F"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "296D"
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "2A65"
|
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "2B20"
|
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "2C74"
|
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "2D6F"
|
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "2E20"
|
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "2F4A"
|
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "3041"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "3153"
|
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::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "324D"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "3320"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "3443"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "3550"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "3655"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "3700"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "3852"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "3965"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "3A61"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "3B64"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "3C79"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "3D00"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "3E54"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "3F65"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "4073"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "4174"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "4269"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "436E"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "4467"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "4500"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "4650"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "4761"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "4873"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "4973"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "4A65"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "4B64"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "4C00"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "4D45"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "4E72"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "4F72"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "506F"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "5172"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "5200"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "530D"
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 16 "540A"
|
||||
|
||||
::chipscope::csejtag_target unlock $handle
|
||||
::chipscope::csejtag_target close $handle
|
||||
::chipscope::csejtag_session destroy $handle
|
||||
exit
|
||||
@@ -0,0 +1,858 @@
|
||||
; -------------------------------------------------
|
||||
; PROJECT "itest"
|
||||
; -------------------------------------------------
|
||||
|
||||
include "../../../jasm/cregs.inc.jsm"
|
||||
|
||||
; -------------------------------------------------
|
||||
xmem
|
||||
msg: dc "Hallo", 0
|
||||
xram: db 256
|
||||
|
||||
cmem 0
|
||||
cram: db 256
|
||||
|
||||
reg_revision: equ 0x00
|
||||
reg_testid: equ 0x01
|
||||
|
||||
; -------------------------------------------------
|
||||
code
|
||||
org 0x000
|
||||
reset: jmp start
|
||||
|
||||
; -------------------------------------------------
|
||||
org 0x001
|
||||
int_vec: jmp isr
|
||||
|
||||
; -------------------------------------------------
|
||||
org 0x010
|
||||
|
||||
start: call init
|
||||
cin R0, (cpu_revision)
|
||||
xout (reg_revision), R0
|
||||
|
||||
; Test 0
|
||||
call test0
|
||||
|
||||
; Test 1
|
||||
mov R0, 1
|
||||
xout (reg_testid), R0
|
||||
call test1
|
||||
|
||||
; Test 2
|
||||
mov R0, 2
|
||||
xout (reg_testid), R0
|
||||
call test2
|
||||
|
||||
; Test 3
|
||||
mov R0, 3
|
||||
xout (reg_testid), R0
|
||||
call test3
|
||||
|
||||
; Test 4
|
||||
mov R0, 4
|
||||
xout (reg_testid), R0
|
||||
call test4
|
||||
|
||||
; Test 5
|
||||
mov R0, 5
|
||||
xout (reg_testid), R0
|
||||
call test5
|
||||
|
||||
; Test 6
|
||||
mov R0, 6
|
||||
xout (reg_testid), R0
|
||||
call test6
|
||||
|
||||
; Test 7
|
||||
mov R0, 7
|
||||
xout (reg_testid), R0
|
||||
call test7
|
||||
|
||||
; Test 8
|
||||
mov R0, 8
|
||||
xout (reg_testid), R0
|
||||
call test8
|
||||
|
||||
; Test 9
|
||||
mov R0, 9
|
||||
xout (reg_testid), R0
|
||||
call test9
|
||||
|
||||
; Test 10
|
||||
mov R0, 10
|
||||
xout (reg_testid), R0
|
||||
call test10
|
||||
|
||||
; Test 11
|
||||
mov R0, 11
|
||||
xout (reg_testid), R0
|
||||
call test11
|
||||
|
||||
; Test 12
|
||||
mov R0, 12
|
||||
xout (reg_testid), R0
|
||||
call test12
|
||||
|
||||
; End of test
|
||||
mov R0, 0xFF
|
||||
xout (reg_testid), R0
|
||||
|
||||
jmp ok
|
||||
|
||||
; -------------------------------------------------
|
||||
init: mov R0, 0
|
||||
mov R1, 0
|
||||
mov R2, 0
|
||||
mov R3, 0
|
||||
mov R4, 0
|
||||
mov R5, 0
|
||||
mov R6, 0
|
||||
mov R7, 0
|
||||
mov R8, 0
|
||||
mov R9, 0
|
||||
mov R10, 0
|
||||
mov R11, 0
|
||||
mov R12, 0
|
||||
mov R13, 0
|
||||
mov R14, 0
|
||||
mov R15, 0
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; MOV|R|K
|
||||
; MOV|R|R
|
||||
test0: mov R0, 0x10
|
||||
cmp R0, 0x10
|
||||
jne error
|
||||
add R0, 1
|
||||
|
||||
mov R1, R0
|
||||
cmp R1, 0x11
|
||||
jne error
|
||||
add R1, 1
|
||||
|
||||
mov R2, R1
|
||||
cmp R2, 0x12
|
||||
jne error
|
||||
add R2, 1
|
||||
|
||||
mov R3, R2
|
||||
cmp R3, 0x13
|
||||
jne error
|
||||
add R3, 1
|
||||
|
||||
mov R4, R3
|
||||
cmp R4, 0x14
|
||||
jne error
|
||||
add R4, 1
|
||||
|
||||
mov R5, R4
|
||||
cmp R5, 0x15
|
||||
jne error
|
||||
add R5, 1
|
||||
|
||||
mov R6, R5
|
||||
cmp R6, 0x16
|
||||
jne error
|
||||
add R6, 1
|
||||
|
||||
mov R7, R6
|
||||
cmp R7, 0x17
|
||||
jne error
|
||||
add R7, 1
|
||||
|
||||
mov R8, R7
|
||||
cmp R8, 0x18
|
||||
jne error
|
||||
add R8, 1
|
||||
|
||||
mov R9, R8
|
||||
cmp R9, 0x19
|
||||
jne error
|
||||
add R9, 1
|
||||
|
||||
mov R10, R9
|
||||
cmp R10, 0x1A
|
||||
jne error
|
||||
add R10, 1
|
||||
|
||||
mov R11, R10
|
||||
cmp R11, 0x1B
|
||||
jne error
|
||||
add R11, 1
|
||||
|
||||
mov R12, R11
|
||||
cmp R12, 0x1C
|
||||
jne error
|
||||
add R12, 1
|
||||
|
||||
mov R13, R12
|
||||
cmp R13, 0x1D
|
||||
jne error
|
||||
add R13, 1
|
||||
|
||||
mov R14, R13
|
||||
cmp R14, 0x1E
|
||||
jne error
|
||||
add R14, 1
|
||||
|
||||
mov R15, R14
|
||||
cmp R15, 0x1F
|
||||
jne error
|
||||
add R15, 1
|
||||
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; Instruction test
|
||||
; TST|R
|
||||
; CMP|R|K
|
||||
; JNZ|K
|
||||
; JC|K
|
||||
; JNE|K
|
||||
; JLT|K
|
||||
; JGT|K
|
||||
; JLE|K
|
||||
; JGE|K
|
||||
; JMP|K
|
||||
test1: mov R0, 0 ; R0 <= 0
|
||||
tst R0
|
||||
jnz error
|
||||
jc error
|
||||
cmp R0, 0
|
||||
jne error
|
||||
jlt error
|
||||
jgt error
|
||||
jle t1_ok10
|
||||
jmp error
|
||||
|
||||
t1_ok10: jeq t1_ok20
|
||||
jmp error
|
||||
|
||||
t1_ok20: jge t1_ok30
|
||||
jmp error
|
||||
|
||||
t1_ok30: cmp R0, 0x55
|
||||
jeq error
|
||||
jlt t1_ok40
|
||||
jmp error
|
||||
|
||||
t1_ok40: jle t1_ok50
|
||||
jmp error
|
||||
|
||||
t1_ok50: jge error
|
||||
jgt error
|
||||
|
||||
mov R0, 0x55 ; R0 <= 0xAA
|
||||
tst R0
|
||||
jz error
|
||||
jc error
|
||||
|
||||
cmp R0, 0xAA
|
||||
jeq error
|
||||
jne t1_ok60
|
||||
jmp error
|
||||
|
||||
t1_ok60: jlt t1_ok70
|
||||
jmp error
|
||||
|
||||
t1_ok70: jle t1_ok80
|
||||
jmp error
|
||||
|
||||
t1_ok80: jgt error
|
||||
|
||||
cmp R0, 0x55
|
||||
jeq t1_ok90
|
||||
jmp error
|
||||
|
||||
t1_ok90: jne error
|
||||
jlt error
|
||||
|
||||
jle t1_ok100
|
||||
jmp error
|
||||
|
||||
t1_ok100: jgt error
|
||||
jge t1_ok110
|
||||
jmp error
|
||||
|
||||
t1_ok110: mov R0, 0xAA ; R0 <= 0x55
|
||||
tst R0
|
||||
jz error
|
||||
jc error
|
||||
|
||||
cmp R0, 0x55
|
||||
jeq error
|
||||
jne t1_ok120
|
||||
jmp error
|
||||
|
||||
t1_ok120: jgt t1_ok130
|
||||
jmp error
|
||||
|
||||
t1_ok130: jge t1_ok140
|
||||
jmp error
|
||||
|
||||
t1_ok140: jlt error
|
||||
jle error
|
||||
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; ADD|R|K
|
||||
; ADDC|R|K
|
||||
; ToDo: ADD|R|R
|
||||
; ToDo: ADDC|R|R
|
||||
; CMP|R|R
|
||||
test2: mov R0, 0
|
||||
mov R1, 0
|
||||
mov R2, R0
|
||||
mov R3, R1
|
||||
|
||||
t2_loop: add R0, 0x01
|
||||
addc R1, 0x00
|
||||
add R2, 1
|
||||
cmp R2, 0
|
||||
jne t2_L1
|
||||
add R3, 1
|
||||
cmp R3, 0x02
|
||||
t2_L1: jne t2_loop
|
||||
cmp R0, R2
|
||||
jne error
|
||||
cmp R1, R3
|
||||
jne error
|
||||
mov R0, 0
|
||||
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; SUB|R|K
|
||||
; SUBC|R|K
|
||||
; ToDo: SUB|R|R
|
||||
; ToDo: SUBC|R|R
|
||||
; CMP|R|R
|
||||
test3: mov R0, 0x00
|
||||
mov R1, 0x03
|
||||
mov R2, R0
|
||||
mov R3, R1
|
||||
|
||||
t3_loop: sub R0, 0x01
|
||||
subc R1, 0x00
|
||||
sub R2, 1
|
||||
cmp R2, 0xFF
|
||||
jne t3_L1
|
||||
sub R3, 1
|
||||
cmp R3, 0x00
|
||||
t3_L1: jne t3_loop
|
||||
cmp R0, R2
|
||||
jne error
|
||||
cmp R1, R3
|
||||
jne error
|
||||
mov R0, 0
|
||||
|
||||
ret
|
||||
; -------------------------------------------------
|
||||
; SUB|K|R
|
||||
; SUB|R|R
|
||||
; SUBC|R|R
|
||||
; SUBC|K|R
|
||||
; CMP|R|R
|
||||
test4: mov R0, 0x03
|
||||
mov R1, 0x05
|
||||
sub 0x05, R0
|
||||
sub R1, 0x03
|
||||
cmp R0, R1
|
||||
jne error
|
||||
mov R0, 0x03
|
||||
mov R1, 0x05
|
||||
sub R0, R1
|
||||
subc 0, R0
|
||||
cmp R0, 0x01
|
||||
jne error
|
||||
add R0, 0
|
||||
subc R1, R0
|
||||
cmp R1, 0x04
|
||||
jne error
|
||||
mov R0, 0
|
||||
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; MOVC|R|Ri
|
||||
; MOVC|R|Ki
|
||||
; MOVC|Ri|R
|
||||
; MOVC|Ri|K
|
||||
; MOVC|Ki|R
|
||||
test5: mov R0, 1
|
||||
movc (cram+0x5A), R0
|
||||
dec R0
|
||||
movc (cram+0), R0
|
||||
movc R1, (cram+0x5A)
|
||||
movc (R1), 0xA5
|
||||
movc R0, (R1)
|
||||
movc R1, (R1)
|
||||
add R1, 0xFF-0xA5
|
||||
movc R0, (R1)
|
||||
t5_loop1: movc (R0), R0
|
||||
movc R2, (R0)
|
||||
cmp R2, R0
|
||||
jne error
|
||||
movc (R2), R1
|
||||
movc R2, (R2)
|
||||
cmp R2, R1
|
||||
jne error
|
||||
dec R1
|
||||
inc R0
|
||||
jnz t5_loop1
|
||||
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; MOVX|R|Ri
|
||||
; MOVX|R|Ki
|
||||
; MOVX|Ri|R
|
||||
; MOVX|Ri|K
|
||||
; MOVX|Ki|R
|
||||
test6: mov R0, 1
|
||||
movx (xram+0x5A), R0
|
||||
dec R0
|
||||
movx (xram+0), R0
|
||||
movx R1, (xram+0x5A)
|
||||
movx (R1), 0xA5
|
||||
movx R0, (R1)
|
||||
movx R1, (R1)
|
||||
add R1, 0xFF-0xA5
|
||||
movx R0, (R1)
|
||||
t6_loop1: movx (R0), R0
|
||||
movx R2, (R0)
|
||||
cmp R2, R0
|
||||
jne error
|
||||
movx (R2), R1
|
||||
movx R2, (R2)
|
||||
cmp R2, R1
|
||||
jne error
|
||||
dec R1
|
||||
inc R0
|
||||
jnz t6_loop1
|
||||
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; PUSH|R
|
||||
; POP|R
|
||||
test7: mov R0, 0xAA
|
||||
mov R1, 0
|
||||
t7_loop1: push R0
|
||||
inc R0
|
||||
dec R1
|
||||
jnz t7_loop1
|
||||
t7_loop2: pop R0
|
||||
dec R1
|
||||
jnz t7_loop2
|
||||
cmp R0, 0xAA
|
||||
jne error
|
||||
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; JMP|K
|
||||
; CALL|K
|
||||
; RET
|
||||
test8: mov R0, 0x55
|
||||
push R0
|
||||
mov R0, 0
|
||||
mov R1, 0xFF
|
||||
call t8_rec
|
||||
pop R0
|
||||
cmp R0, 0x55
|
||||
jne error
|
||||
|
||||
; Stack manipulations 1
|
||||
mov R0, return1'high
|
||||
mov R1, return1'low
|
||||
cout (cpu_stack_high), R0
|
||||
push R1
|
||||
|
||||
mov R0, init'high
|
||||
mov R1, init'low
|
||||
cout (cpu_stack_high), R0
|
||||
push R1
|
||||
ret
|
||||
|
||||
; Stack manipulations 2
|
||||
return1: mov R0, return2'high
|
||||
mov R1, return2'low
|
||||
cout (cpu_stack_high), R0
|
||||
push R1
|
||||
|
||||
mov R0, init'high
|
||||
mov R1, init'low
|
||||
cout (cpu_stack_high), R0
|
||||
push R1
|
||||
return2: ret
|
||||
|
||||
t8_rec: cmp R0, R1
|
||||
jeq ex_t8_rec
|
||||
inc R0
|
||||
jmp t8_rstub
|
||||
ex_t8_rec: dec R0
|
||||
dec R1
|
||||
ret
|
||||
|
||||
t8_rstub: call t8_rec
|
||||
jmp ex_t8_rec
|
||||
|
||||
; -------------------------------------------------
|
||||
; SWAP|R
|
||||
; SHL|R
|
||||
; SHR|R
|
||||
; ROL|R
|
||||
; ROR|R
|
||||
; ROLC|R
|
||||
; RORC|R
|
||||
test9: mov R0, 0xA5 ; SWAP test
|
||||
mov R1, 0x5A
|
||||
swap R0
|
||||
cmp R0, 0x5A
|
||||
jne error
|
||||
swap R0
|
||||
cmp R0, 0xA5
|
||||
jne error
|
||||
mov R0, 0xD2
|
||||
swap R0
|
||||
cmp R0, 0x2D
|
||||
jne error
|
||||
swap R1
|
||||
cmp R0, 0x2D
|
||||
jne error
|
||||
cmp R1, 0xA5
|
||||
jne error
|
||||
|
||||
mov R0, 0x2D
|
||||
shl R0 ; SHL test
|
||||
cmp R0, 0x5A
|
||||
jne error
|
||||
shl R0
|
||||
cmp R0, 0xB4
|
||||
jne error
|
||||
shl R0
|
||||
cmp R0, 0x68
|
||||
jne error
|
||||
shl R0
|
||||
cmp R0, 0xD0
|
||||
jne error
|
||||
shl R0
|
||||
cmp R0, 0xA0
|
||||
jne error
|
||||
shl R0
|
||||
cmp R0, 0x40
|
||||
jne error
|
||||
shl R0
|
||||
cmp R0, 0x80
|
||||
jne error
|
||||
shl R0
|
||||
cmp R0, 0x00
|
||||
jne error
|
||||
|
||||
mov R1, 0x84
|
||||
shr R1 ; SHR test
|
||||
cmp R1, 0x42
|
||||
jne error
|
||||
shr R1
|
||||
cmp R1, 0x21
|
||||
jne error
|
||||
shr R1
|
||||
cmp R1, 0x10
|
||||
jne error
|
||||
shr R1
|
||||
cmp R1, 0x08
|
||||
jne error
|
||||
shr R1
|
||||
cmp R1, 0x04
|
||||
jne error
|
||||
shr R1
|
||||
cmp R1, 0x02
|
||||
jne error
|
||||
shr R1
|
||||
cmp R1, 0x01
|
||||
jne error
|
||||
shr R1
|
||||
cmp R1, 0x00
|
||||
jne error
|
||||
|
||||
mov R0, 0xC5 ; ROL test
|
||||
rol R0
|
||||
cmp R0, 0x8B
|
||||
jne error
|
||||
rol R0
|
||||
cmp R0, 0x17
|
||||
jne error
|
||||
rol R0
|
||||
cmp R0, 0x2E
|
||||
jne error
|
||||
rol R0
|
||||
cmp R0, 0x5C
|
||||
jne error
|
||||
rol R0
|
||||
cmp R0, 0xB8
|
||||
jne error
|
||||
rol R0
|
||||
cmp R0, 0x71
|
||||
jne error
|
||||
rol R0
|
||||
cmp R0, 0xE2
|
||||
jne error
|
||||
rol R0
|
||||
cmp R0, 0xC5
|
||||
jne error
|
||||
|
||||
mov R1, 0x63 ; ROR test
|
||||
ror R1
|
||||
cmp R1, 0xB1
|
||||
jne error
|
||||
ror R1
|
||||
cmp R1, 0xD8
|
||||
jne error
|
||||
ror R1
|
||||
cmp R1, 0x6C
|
||||
jne error
|
||||
ror R1
|
||||
cmp R1, 0x36
|
||||
jne error
|
||||
ror R1
|
||||
cmp R1, 0x1B
|
||||
jne error
|
||||
ror R1
|
||||
cmp R1, 0x8D
|
||||
jne error
|
||||
ror R1
|
||||
cmp R1, 0xC6
|
||||
jne error
|
||||
ror R1
|
||||
cmp R1, 0x63
|
||||
jne error
|
||||
|
||||
|
||||
xor R0, R0 ; ROLC generate
|
||||
mov R0, 0xC5
|
||||
rolc R0
|
||||
push R0
|
||||
rolc R0
|
||||
push R0
|
||||
rolc R0
|
||||
push R0
|
||||
rolc R0
|
||||
push R0
|
||||
rolc R0
|
||||
push R0
|
||||
rolc R0
|
||||
push R0
|
||||
rolc R0
|
||||
push R0
|
||||
rolc R0
|
||||
push R0
|
||||
rolc R0
|
||||
|
||||
cmp R0, 0xC5 ; ROLC verify
|
||||
jne error
|
||||
pop R0
|
||||
cmp R0, 0x62
|
||||
jne error
|
||||
pop R0
|
||||
cmp R0, 0xB1
|
||||
jne error
|
||||
pop R0
|
||||
cmp R0, 0x58
|
||||
jne error
|
||||
pop R0
|
||||
cmp R0, 0xAC
|
||||
jne error
|
||||
pop R0
|
||||
cmp R0, 0x56
|
||||
jne error
|
||||
pop R0
|
||||
cmp R0, 0x2B
|
||||
jne error
|
||||
pop R0
|
||||
cmp R0, 0x15
|
||||
jne error
|
||||
pop R0
|
||||
cmp R0, 0x8A
|
||||
jne error
|
||||
|
||||
xor R1, R1 ; RORC generate
|
||||
mov R1, 0x63
|
||||
rorc R1
|
||||
push R1
|
||||
rorc R1
|
||||
push R1
|
||||
rorc R1
|
||||
push R1
|
||||
rorc R1
|
||||
push R1
|
||||
rorc R1
|
||||
push R1
|
||||
rorc R1
|
||||
push R1
|
||||
rorc R1
|
||||
push R1
|
||||
rorc R1
|
||||
push R1
|
||||
rorc R1
|
||||
|
||||
cmp R1, 0x63 ; RORC verify
|
||||
jne error
|
||||
pop R1
|
||||
cmp R1, 0xC6
|
||||
jne error
|
||||
pop R1
|
||||
cmp R1, 0x8C
|
||||
jne error
|
||||
pop R1
|
||||
cmp R1, 0x19
|
||||
jne error
|
||||
pop R1
|
||||
cmp R1, 0x33
|
||||
jne error
|
||||
pop R1
|
||||
cmp R1, 0x66
|
||||
jne error
|
||||
pop R1
|
||||
cmp R1, 0xCC
|
||||
jne error
|
||||
pop R1
|
||||
cmp R1, 0x98
|
||||
jne error
|
||||
pop R1
|
||||
cmp R1, 0x31
|
||||
jne error
|
||||
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; AND|R|R
|
||||
; AND|R|K
|
||||
; OR|R|R
|
||||
; OR|R|K
|
||||
; XOR|R|R
|
||||
; XOR|R|K
|
||||
test10: mov R0, 0xA5 ; AND
|
||||
swap R0
|
||||
push R0
|
||||
and R0, 0x0F
|
||||
cmp R0, 0x0A
|
||||
jne error
|
||||
pop R0
|
||||
push R0
|
||||
and R0, 0x0F
|
||||
cmp R0, 0x0A
|
||||
pop R1
|
||||
jne error
|
||||
swap R1
|
||||
mov R2, 0x0F
|
||||
and R1, R2
|
||||
cmp R1, 0x05
|
||||
jne error
|
||||
|
||||
mov R0, 0x05 ; OR
|
||||
mov R2, 0xA0
|
||||
swap R0
|
||||
or R2, R0
|
||||
cmp R2, 0xF0
|
||||
jne error
|
||||
swap R0
|
||||
or R0, 0x50
|
||||
cmp R0, 0x55
|
||||
jne error
|
||||
|
||||
mov R1, 0x01
|
||||
mov R0, 0x01
|
||||
xor R0, 0x01
|
||||
jnz error
|
||||
xor R0, R1
|
||||
cmp R0, 0x01
|
||||
jne error
|
||||
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
test11:
|
||||
mov R0, 0x03
|
||||
cout (cpu_int_ctrl), R0
|
||||
|
||||
xin R0, (2)
|
||||
or R0, 1
|
||||
xout (2), R0
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
xin R0, (2)
|
||||
and R0, 0xFE
|
||||
xout (2), R0
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
|
||||
cin R0, (cpu_int_ctrl)
|
||||
or R0, 0x80
|
||||
cout (cpu_int_ctrl), R0
|
||||
nop
|
||||
cin R0, (cpu_int_ctrl)
|
||||
or R0, 0x80
|
||||
cout (cpu_int_ctrl), R0
|
||||
nop
|
||||
cin R0, (cpu_int_ctrl)
|
||||
or R0, 0x80
|
||||
cout (cpu_int_ctrl), R0
|
||||
nop
|
||||
cin R0, (cpu_int_ctrl)
|
||||
or R0, 0x80
|
||||
cout (cpu_int_ctrl), R0
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; Tests clrc, setc
|
||||
test12: sub R0, 0
|
||||
jc error
|
||||
setc
|
||||
jnc error
|
||||
nop
|
||||
sub R0, 0
|
||||
jc error
|
||||
|
||||
mov R0, 0
|
||||
clrc
|
||||
jc error
|
||||
setc
|
||||
jnc error
|
||||
nop
|
||||
clrc
|
||||
jc error
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
isr: inc R14
|
||||
reti
|
||||
|
||||
; -------------------------------------------------
|
||||
org 0x3FF
|
||||
error: jmp error
|
||||
|
||||
; -------------------------------------------------
|
||||
org 0x2FF
|
||||
ok: jmp ok
|
||||
|
||||
; -------------------------------------------------
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,50 @@
|
||||
#!/bin/sh
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
# This file: rom-file generation for cpu_core
|
||||
#
|
||||
# Copyright (C) 2007 J. Ahrensfeld
|
||||
#
|
||||
# This program is free software: you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation, either version 3 of the License, or
|
||||
# (at your option) any later version.
|
||||
#
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
#
|
||||
# For questions and ideas, please contact the author at jens@jayfield.org
|
||||
#
|
||||
# ---------------------------------------------------------------------
|
||||
|
||||
TARGET=$2
|
||||
DSTDIR=$1
|
||||
|
||||
JASM_HOME=/cygdrive/w/vhdl/lib/CPUs/JCpu/tools
|
||||
|
||||
$JASM_HOME/jasm.rb $TARGET.jsm
|
||||
|
||||
irom_tcl_snippet="$TARGET.irom.tcl.snip"
|
||||
irom_vhdl_snippet="$TARGET.irom.vhdl.snip"
|
||||
irom_ld_vhdl_snippet="$TARGET.irom_ld.vhdl.snip"
|
||||
xrom_tcl_snippet="$TARGET.xrom.tcl.snip"
|
||||
xrom_vhdl_snippet="$TARGET.xrom.vhdl.snip"
|
||||
xrom_ld_vhdl_snippet="$TARGET.xrom_ld.vhdl.snip"
|
||||
|
||||
$JASM_HOME/insrom.rb $irom_vhdl_snippet $JASM_HOME/irom.vhd.tpl >$DSTDIR/$TARGET\_irom.vhdl
|
||||
$JASM_HOME/insrom.rb $irom_ld_vhdl_snippet $JASM_HOME/irom_ld.vhd.tpl >$DSTDIR/$TARGET\_irom_ld.vhdl
|
||||
|
||||
$JASM_HOME/insrom.rb $xrom_vhdl_snippet $JASM_HOME/xrom.vhd.tpl >$DSTDIR/$TARGET\_xrom.vhdl
|
||||
$JASM_HOME/insrom.rb $xrom_ld_vhdl_snippet $JASM_HOME/xrom_ld.vhd.tpl >$DSTDIR/$TARGET\_xrom_ld.vhdl
|
||||
|
||||
cat $irom_tcl_snippet > $TARGET.tcl.snip.snip
|
||||
cat $xrom_tcl_snippet >> $TARGET.tcl.snip.snip
|
||||
$JASM_HOME/insrom.rb $TARGET.tcl.snip.snip $JASM_HOME/rom.tcl.tpl >$TARGET.tcl
|
||||
|
||||
rm -f *.snip
|
||||
@@ -0,0 +1,29 @@
|
||||
; -------------------------------------------------
|
||||
; Constants
|
||||
; -------------------------------------------------
|
||||
|
||||
; Chip register
|
||||
include "../../../jasm/cregs.inc.jsm"
|
||||
|
||||
; -------------------------------------------------
|
||||
; Program
|
||||
; -------------------------------------------------
|
||||
code
|
||||
org 0x000
|
||||
reset: jmp init
|
||||
|
||||
; -------------------------------------------------
|
||||
; Main
|
||||
; -------------------------------------------------
|
||||
init: mov R0, 0x45
|
||||
mov R1, 0xF5
|
||||
|
||||
call mul8x8
|
||||
stop: jmp stop
|
||||
|
||||
|
||||
; -------------------------------------------------
|
||||
include "../../../jasm/mul8x8.inc.jsm"
|
||||
|
||||
|
||||
|
||||
@@ -0,0 +1,154 @@
|
||||
# ----------------------------------------------------------------------
|
||||
# Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
# This file: The ROM file for upload to target over JTAG
|
||||
#
|
||||
# Copyright (C) 2007 J. Ahrensfeld
|
||||
#
|
||||
# This program is free software: you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation, either version 3 of the License, or
|
||||
# (at your option) any later version.
|
||||
#
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
#
|
||||
# For questions and ideas, please contact the author at jens@jayfield.org
|
||||
#
|
||||
# ---------------------------------------------------------------------
|
||||
|
||||
# ---------------------------------------------------------------------
|
||||
# For Chipscope 9.1
|
||||
# ---------------------------------------------------------------------
|
||||
# Source JTAG/TCL frame work
|
||||
cd $env(CHIPSCOPE)\\bin\\nt
|
||||
source csejtag.tcl
|
||||
|
||||
namespace import ::chipscope::*
|
||||
|
||||
# Platform USB Cable
|
||||
set PLATFORM_USB_CABLE_ARGS [list "port=USB2" "frequency=6000000"]
|
||||
# frequency="24000000 | 12000000 | 6000000 | 3000000 | 1500000 | 750000"
|
||||
|
||||
# Create session
|
||||
set handle [::chipscope::csejtag_session create 0]
|
||||
|
||||
# Open JTAG and lock
|
||||
set open_result [::chipscope::csejtag_target open $handle $CSEJTAG_TARGET_PLATFORMUSB 0 $PLATFORM_USB_CABLE_ARGS]
|
||||
set lock_result [::chipscope::csejtag_target lock $handle 1000]
|
||||
|
||||
set devlist [::chipscope::csejtag_tap autodetect_chain $handle $CSEJTAG_SCAN_DEFAULT]
|
||||
|
||||
# Get Device ID
|
||||
set devtype "Virtex-4SX"
|
||||
set devid 2
|
||||
set irlength [::chipscope::csejtag_tap get_irlength $handle $devid]
|
||||
set idcode [::chipscope::csejtag_tap get_device_idcode $handle $devid]
|
||||
|
||||
set CSE_OP $CSEJTAG_SHIFT_READWRITE
|
||||
set CSE_ES $CSEJTAG_RUN_TEST_IDLE
|
||||
|
||||
# Write Program
|
||||
# JASM_ROM_INSERT_HERE
|
||||
# Assembled from mul8x8.jsm
|
||||
# ---------------------------------------------------------------
|
||||
# Shift the USER2 Instruction (b1111000010) into the Instruction Register of FPGA
|
||||
# User 1
|
||||
set result [::chipscope::csejtag_tap shift_device_ir $handle $devid $CSE_OP $CSE_ES 0 $irlength "3C2"]
|
||||
|
||||
# 0x000: JMP 0x001
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00030001"
|
||||
|
||||
# 0x001: MOV R00, 0x45
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00103450"
|
||||
|
||||
# 0x002: MOV R01, 0xF5
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00203F51"
|
||||
|
||||
# 0x003: CALL 0x005
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0033B005"
|
||||
|
||||
# 0x004: JMP 0x004
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00430004"
|
||||
|
||||
# 0x005: PUSH R02
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0053C002"
|
||||
|
||||
# 0x006: PUSH R03
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0063C003"
|
||||
|
||||
# 0x007: PUSH R04
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0073C004"
|
||||
|
||||
# 0x008: MOV R04, R01
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00802014"
|
||||
|
||||
# 0x009: MOV R01, 0x00
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00903001"
|
||||
|
||||
# 0x00A: MOV R02, 0x00
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00A03002"
|
||||
|
||||
# 0x00B: MOV R03, 0x00
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00B03003"
|
||||
|
||||
# 0x00C: CMP R04, 0x01
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00C0F014"
|
||||
|
||||
# 0x00D: JEQ 0x015
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00D39015"
|
||||
|
||||
# 0x00E: SHR R04
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00E1F004"
|
||||
|
||||
# 0x00F: JNC 0x012
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00F34012"
|
||||
|
||||
# 0x010: ADD R02, R00
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01010002"
|
||||
|
||||
# 0x011: ADDC R03, R01
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01112013"
|
||||
|
||||
# 0x012: SHL R00
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0121E000"
|
||||
|
||||
# 0x013: ROLC R01
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01322001"
|
||||
|
||||
# 0x014: JMP 0x00C
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0143000C"
|
||||
|
||||
# 0x015: ADD R00, R02
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01510020"
|
||||
|
||||
# 0x016: ADDC R01, R03
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01612031"
|
||||
|
||||
# 0x017: POP R04
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0173D004"
|
||||
|
||||
# 0x018: POP R03
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0183D003"
|
||||
|
||||
# 0x019: POP R02
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0193D002"
|
||||
|
||||
# 0x01A: RET
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01A3E000"
|
||||
|
||||
# Assembled from mul8x8.jsm
|
||||
# ---------------------------------------------------------------
|
||||
# Shift the USER2 Instruction (b1111000011) into the Instruction Register of FPGA
|
||||
# User 2
|
||||
set result [::chipscope::csejtag_tap shift_device_ir $handle $devid $CSE_OP $CSE_ES 0 $irlength "3C3"]
|
||||
|
||||
|
||||
::chipscope::csejtag_target unlock $handle
|
||||
::chipscope::csejtag_target close $handle
|
||||
::chipscope::csejtag_session destroy $handle
|
||||
exit
|
||||
@@ -0,0 +1,50 @@
|
||||
; -------------------------------------------------
|
||||
; Constants
|
||||
; -------------------------------------------------
|
||||
|
||||
; Chip register
|
||||
cpu_revision: equ 0x00 ; RO
|
||||
cpu_control: equ 0x01 ; R/W
|
||||
cpu_status: equ 0x02 ; RO
|
||||
cpu_int_ctrl: equ 0x03 ; R/W
|
||||
|
||||
; -------------------------------------------------
|
||||
; Program
|
||||
; -------------------------------------------------
|
||||
code
|
||||
reset: jmp init
|
||||
|
||||
org 0x001
|
||||
; nop
|
||||
reti
|
||||
|
||||
; -------------------------------------------------
|
||||
; Main
|
||||
; -------------------------------------------------
|
||||
init: mov R0, 0x05
|
||||
cout (cpu_int_ctrl), R0
|
||||
mov R0, 0x00
|
||||
loop: nop
|
||||
inc R0
|
||||
nop
|
||||
call subr
|
||||
nop
|
||||
push R3
|
||||
nop
|
||||
push R2
|
||||
nop
|
||||
push R1
|
||||
nop
|
||||
push R0
|
||||
nop
|
||||
pop R0
|
||||
nop
|
||||
pop R1
|
||||
nop
|
||||
pop R2
|
||||
nop
|
||||
pop R3
|
||||
nop
|
||||
jmp loop
|
||||
|
||||
subr: ret
|
||||
@@ -0,0 +1,157 @@
|
||||
# ----------------------------------------------------------------------
|
||||
# Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
# This file: The ROM file for upload to target over JTAG
|
||||
#
|
||||
# Copyright (C) 2007 J. Ahrensfeld
|
||||
#
|
||||
# This program is free software: you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation, either version 3 of the License, or
|
||||
# (at your option) any later version.
|
||||
#
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
#
|
||||
# For questions and ideas, please contact the author at jens@jayfield.org
|
||||
#
|
||||
# ---------------------------------------------------------------------
|
||||
|
||||
# ---------------------------------------------------------------------
|
||||
# For Chipscope 9.1
|
||||
# ---------------------------------------------------------------------
|
||||
# Source JTAG/TCL frame work
|
||||
cd $env(CHIPSCOPE)\\bin\\nt
|
||||
source csejtag.tcl
|
||||
|
||||
namespace import ::chipscope::*
|
||||
|
||||
# Platform USB Cable
|
||||
set PLATFORM_USB_CABLE_ARGS [list "port=USB2" "frequency=6000000"]
|
||||
# frequency="24000000 | 12000000 | 6000000 | 3000000 | 1500000 | 750000"
|
||||
|
||||
# Create session
|
||||
set handle [::chipscope::csejtag_session create 0]
|
||||
|
||||
# Open JTAG and lock
|
||||
set open_result [::chipscope::csejtag_target open $handle $CSEJTAG_TARGET_PLATFORMUSB 0 $PLATFORM_USB_CABLE_ARGS]
|
||||
set lock_result [::chipscope::csejtag_target lock $handle 1000]
|
||||
|
||||
set devlist [::chipscope::csejtag_tap autodetect_chain $handle $CSEJTAG_SCAN_DEFAULT]
|
||||
|
||||
# Get Device ID
|
||||
set devtype "Virtex-4SX"
|
||||
set devid 2
|
||||
set irlength [::chipscope::csejtag_tap get_irlength $handle $devid]
|
||||
set idcode [::chipscope::csejtag_tap get_device_idcode $handle $devid]
|
||||
|
||||
set CSE_OP $CSEJTAG_SHIFT_READWRITE
|
||||
set CSE_ES $CSEJTAG_RUN_TEST_IDLE
|
||||
|
||||
# Write Program
|
||||
# JASM_ROM_INSERT_HERE
|
||||
# Assembled from reti_issue.jsm
|
||||
# ---------------------------------------------------------------
|
||||
# Shift the USER2 Instruction (b1111000010) into the Instruction Register of FPGA
|
||||
# User 1
|
||||
set result [::chipscope::csejtag_tap shift_device_ir $handle $devid $CSE_OP $CSE_ES 0 $irlength "3C2"]
|
||||
|
||||
# 0x000: JMP 0x002
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00030002"
|
||||
|
||||
# 0x001: RETI
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0013F000"
|
||||
|
||||
# 0x002: MOV R00, 0x05
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00203050"
|
||||
|
||||
# 0x003: COUT (0x03), R00
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00326030"
|
||||
|
||||
# 0x004: MOV R00, 0x00
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00403000"
|
||||
|
||||
# 0x005: NOP
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00500000"
|
||||
|
||||
# 0x006: INC R00
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00611010"
|
||||
|
||||
# 0x007: NOP
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00700000"
|
||||
|
||||
# 0x008: CALL 0x01B
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0083B01B"
|
||||
|
||||
# 0x009: NOP
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00900000"
|
||||
|
||||
# 0x00A: PUSH R03
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00A3C003"
|
||||
|
||||
# 0x00B: NOP
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00B00000"
|
||||
|
||||
# 0x00C: PUSH R02
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00C3C002"
|
||||
|
||||
# 0x00D: NOP
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00D00000"
|
||||
|
||||
# 0x00E: PUSH R01
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00E3C001"
|
||||
|
||||
# 0x00F: NOP
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "00F00000"
|
||||
|
||||
# 0x010: PUSH R00
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0103C000"
|
||||
|
||||
# 0x011: NOP
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01100000"
|
||||
|
||||
# 0x012: POP R00
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0123D000"
|
||||
|
||||
# 0x013: NOP
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01300000"
|
||||
|
||||
# 0x014: POP R01
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0143D001"
|
||||
|
||||
# 0x015: NOP
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01500000"
|
||||
|
||||
# 0x016: POP R02
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0163D002"
|
||||
|
||||
# 0x017: NOP
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01700000"
|
||||
|
||||
# 0x018: POP R03
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "0183D003"
|
||||
|
||||
# 0x019: NOP
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01900000"
|
||||
|
||||
# 0x01A: JMP 0x005
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01A30005"
|
||||
|
||||
# 0x01B: RET
|
||||
::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 32 "01B3E000"
|
||||
|
||||
# Assembled from reti_issue.jsm
|
||||
# ---------------------------------------------------------------
|
||||
# Shift the USER2 Instruction (b1111000011) into the Instruction Register of FPGA
|
||||
# User 2
|
||||
set result [::chipscope::csejtag_tap shift_device_ir $handle $devid $CSE_OP $CSE_ES 0 $irlength "3C3"]
|
||||
|
||||
|
||||
::chipscope::csejtag_target unlock $handle
|
||||
::chipscope::csejtag_target close $handle
|
||||
::chipscope::csejtag_session destroy $handle
|
||||
exit
|
||||
Binary file not shown.
|
After Width: | Height: | Size: 7.8 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 3.5 KiB |
@@ -0,0 +1,674 @@
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 3, 29 June 2007
|
||||
|
||||
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
||||
|
||||
Preamble
|
||||
|
||||
The GNU General Public License is a free, copyleft license for
|
||||
software and other kinds of works.
|
||||
|
||||
The licenses for most software and other practical works are designed
|
||||
to take away your freedom to share and change the works. By contrast,
|
||||
the GNU General Public License is intended to guarantee your freedom to
|
||||
share and change all versions of a program--to make sure it remains free
|
||||
software for all its users. We, the Free Software Foundation, use the
|
||||
GNU General Public License for most of our software; it applies also to
|
||||
any other work released this way by its authors. You can apply it to
|
||||
your programs, too.
|
||||
|
||||
When we speak of free software, we are referring to freedom, not
|
||||
price. Our General Public Licenses are designed to make sure that you
|
||||
have the freedom to distribute copies of free software (and charge for
|
||||
them if you wish), that you receive source code or can get it if you
|
||||
want it, that you can change the software or use pieces of it in new
|
||||
free programs, and that you know you can do these things.
|
||||
|
||||
To protect your rights, we need to prevent others from denying you
|
||||
these rights or asking you to surrender the rights. Therefore, you have
|
||||
certain responsibilities if you distribute copies of the software, or if
|
||||
you modify it: responsibilities to respect the freedom of others.
|
||||
|
||||
For example, if you distribute copies of such a program, whether
|
||||
gratis or for a fee, you must pass on to the recipients the same
|
||||
freedoms that you received. You must make sure that they, too, receive
|
||||
or can get the source code. And you must show them these terms so they
|
||||
know their rights.
|
||||
|
||||
Developers that use the GNU GPL protect your rights with two steps:
|
||||
(1) assert copyright on the software, and (2) offer you this License
|
||||
giving you legal permission to copy, distribute and/or modify it.
|
||||
|
||||
For the developers' and authors' protection, the GPL clearly explains
|
||||
that there is no warranty for this free software. For both users' and
|
||||
authors' sake, the GPL requires that modified versions be marked as
|
||||
changed, so that their problems will not be attributed erroneously to
|
||||
authors of previous versions.
|
||||
|
||||
Some devices are designed to deny users access to install or run
|
||||
modified versions of the software inside them, although the manufacturer
|
||||
can do so. This is fundamentally incompatible with the aim of
|
||||
protecting users' freedom to change the software. The systematic
|
||||
pattern of such abuse occurs in the area of products for individuals to
|
||||
use, which is precisely where it is most unacceptable. Therefore, we
|
||||
have designed this version of the GPL to prohibit the practice for those
|
||||
products. If such problems arise substantially in other domains, we
|
||||
stand ready to extend this provision to those domains in future versions
|
||||
of the GPL, as needed to protect the freedom of users.
|
||||
|
||||
Finally, every program is threatened constantly by software patents.
|
||||
States should not allow patents to restrict development and use of
|
||||
software on general-purpose computers, but in those that do, we wish to
|
||||
avoid the special danger that patents applied to a free program could
|
||||
make it effectively proprietary. To prevent this, the GPL assures that
|
||||
patents cannot be used to render the program non-free.
|
||||
|
||||
The precise terms and conditions for copying, distribution and
|
||||
modification follow.
|
||||
|
||||
TERMS AND CONDITIONS
|
||||
|
||||
0. Definitions.
|
||||
|
||||
"This License" refers to version 3 of the GNU General Public License.
|
||||
|
||||
"Copyright" also means copyright-like laws that apply to other kinds of
|
||||
works, such as semiconductor masks.
|
||||
|
||||
"The Program" refers to any copyrightable work licensed under this
|
||||
License. Each licensee is addressed as "you". "Licensees" and
|
||||
"recipients" may be individuals or organizations.
|
||||
|
||||
To "modify" a work means to copy from or adapt all or part of the work
|
||||
in a fashion requiring copyright permission, other than the making of an
|
||||
exact copy. The resulting work is called a "modified version" of the
|
||||
earlier work or a work "based on" the earlier work.
|
||||
|
||||
A "covered work" means either the unmodified Program or a work based
|
||||
on the Program.
|
||||
|
||||
To "propagate" a work means to do anything with it that, without
|
||||
permission, would make you directly or secondarily liable for
|
||||
infringement under applicable copyright law, except executing it on a
|
||||
computer or modifying a private copy. Propagation includes copying,
|
||||
distribution (with or without modification), making available to the
|
||||
public, and in some countries other activities as well.
|
||||
|
||||
To "convey" a work means any kind of propagation that enables other
|
||||
parties to make or receive copies. Mere interaction with a user through
|
||||
a computer network, with no transfer of a copy, is not conveying.
|
||||
|
||||
An interactive user interface displays "Appropriate Legal Notices"
|
||||
to the extent that it includes a convenient and prominently visible
|
||||
feature that (1) displays an appropriate copyright notice, and (2)
|
||||
tells the user that there is no warranty for the work (except to the
|
||||
extent that warranties are provided), that licensees may convey the
|
||||
work under this License, and how to view a copy of this License. If
|
||||
the interface presents a list of user commands or options, such as a
|
||||
menu, a prominent item in the list meets this criterion.
|
||||
|
||||
1. Source Code.
|
||||
|
||||
The "source code" for a work means the preferred form of the work
|
||||
for making modifications to it. "Object code" means any non-source
|
||||
form of a work.
|
||||
|
||||
A "Standard Interface" means an interface that either is an official
|
||||
standard defined by a recognized standards body, or, in the case of
|
||||
interfaces specified for a particular programming language, one that
|
||||
is widely used among developers working in that language.
|
||||
|
||||
The "System Libraries" of an executable work include anything, other
|
||||
than the work as a whole, that (a) is included in the normal form of
|
||||
packaging a Major Component, but which is not part of that Major
|
||||
Component, and (b) serves only to enable use of the work with that
|
||||
Major Component, or to implement a Standard Interface for which an
|
||||
implementation is available to the public in source code form. A
|
||||
"Major Component", in this context, means a major essential component
|
||||
(kernel, window system, and so on) of the specific operating system
|
||||
(if any) on which the executable work runs, or a compiler used to
|
||||
produce the work, or an object code interpreter used to run it.
|
||||
|
||||
The "Corresponding Source" for a work in object code form means all
|
||||
the source code needed to generate, install, and (for an executable
|
||||
work) run the object code and to modify the work, including scripts to
|
||||
control those activities. However, it does not include the work's
|
||||
System Libraries, or general-purpose tools or generally available free
|
||||
programs which are used unmodified in performing those activities but
|
||||
which are not part of the work. For example, Corresponding Source
|
||||
includes interface definition files associated with source files for
|
||||
the work, and the source code for shared libraries and dynamically
|
||||
linked subprograms that the work is specifically designed to require,
|
||||
such as by intimate data communication or control flow between those
|
||||
subprograms and other parts of the work.
|
||||
|
||||
The Corresponding Source need not include anything that users
|
||||
can regenerate automatically from other parts of the Corresponding
|
||||
Source.
|
||||
|
||||
The Corresponding Source for a work in source code form is that
|
||||
same work.
|
||||
|
||||
2. Basic Permissions.
|
||||
|
||||
All rights granted under this License are granted for the term of
|
||||
copyright on the Program, and are irrevocable provided the stated
|
||||
conditions are met. This License explicitly affirms your unlimited
|
||||
permission to run the unmodified Program. The output from running a
|
||||
covered work is covered by this License only if the output, given its
|
||||
content, constitutes a covered work. This License acknowledges your
|
||||
rights of fair use or other equivalent, as provided by copyright law.
|
||||
|
||||
You may make, run and propagate covered works that you do not
|
||||
convey, without conditions so long as your license otherwise remains
|
||||
in force. You may convey covered works to others for the sole purpose
|
||||
of having them make modifications exclusively for you, or provide you
|
||||
with facilities for running those works, provided that you comply with
|
||||
the terms of this License in conveying all material for which you do
|
||||
not control copyright. Those thus making or running the covered works
|
||||
for you must do so exclusively on your behalf, under your direction
|
||||
and control, on terms that prohibit them from making any copies of
|
||||
your copyrighted material outside their relationship with you.
|
||||
|
||||
Conveying under any other circumstances is permitted solely under
|
||||
the conditions stated below. Sublicensing is not allowed; section 10
|
||||
makes it unnecessary.
|
||||
|
||||
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
|
||||
|
||||
No covered work shall be deemed part of an effective technological
|
||||
measure under any applicable law fulfilling obligations under article
|
||||
11 of the WIPO copyright treaty adopted on 20 December 1996, or
|
||||
similar laws prohibiting or restricting circumvention of such
|
||||
measures.
|
||||
|
||||
When you convey a covered work, you waive any legal power to forbid
|
||||
circumvention of technological measures to the extent such circumvention
|
||||
is effected by exercising rights under this License with respect to
|
||||
the covered work, and you disclaim any intention to limit operation or
|
||||
modification of the work as a means of enforcing, against the work's
|
||||
users, your or third parties' legal rights to forbid circumvention of
|
||||
technological measures.
|
||||
|
||||
4. Conveying Verbatim Copies.
|
||||
|
||||
You may convey verbatim copies of the Program's source code as you
|
||||
receive it, in any medium, provided that you conspicuously and
|
||||
appropriately publish on each copy an appropriate copyright notice;
|
||||
keep intact all notices stating that this License and any
|
||||
non-permissive terms added in accord with section 7 apply to the code;
|
||||
keep intact all notices of the absence of any warranty; and give all
|
||||
recipients a copy of this License along with the Program.
|
||||
|
||||
You may charge any price or no price for each copy that you convey,
|
||||
and you may offer support or warranty protection for a fee.
|
||||
|
||||
5. Conveying Modified Source Versions.
|
||||
|
||||
You may convey a work based on the Program, or the modifications to
|
||||
produce it from the Program, in the form of source code under the
|
||||
terms of section 4, provided that you also meet all of these conditions:
|
||||
|
||||
a) The work must carry prominent notices stating that you modified
|
||||
it, and giving a relevant date.
|
||||
|
||||
b) The work must carry prominent notices stating that it is
|
||||
released under this License and any conditions added under section
|
||||
7. This requirement modifies the requirement in section 4 to
|
||||
"keep intact all notices".
|
||||
|
||||
c) You must license the entire work, as a whole, under this
|
||||
License to anyone who comes into possession of a copy. This
|
||||
License will therefore apply, along with any applicable section 7
|
||||
additional terms, to the whole of the work, and all its parts,
|
||||
regardless of how they are packaged. This License gives no
|
||||
permission to license the work in any other way, but it does not
|
||||
invalidate such permission if you have separately received it.
|
||||
|
||||
d) If the work has interactive user interfaces, each must display
|
||||
Appropriate Legal Notices; however, if the Program has interactive
|
||||
interfaces that do not display Appropriate Legal Notices, your
|
||||
work need not make them do so.
|
||||
|
||||
A compilation of a covered work with other separate and independent
|
||||
works, which are not by their nature extensions of the covered work,
|
||||
and which are not combined with it such as to form a larger program,
|
||||
in or on a volume of a storage or distribution medium, is called an
|
||||
"aggregate" if the compilation and its resulting copyright are not
|
||||
used to limit the access or legal rights of the compilation's users
|
||||
beyond what the individual works permit. Inclusion of a covered work
|
||||
in an aggregate does not cause this License to apply to the other
|
||||
parts of the aggregate.
|
||||
|
||||
6. Conveying Non-Source Forms.
|
||||
|
||||
You may convey a covered work in object code form under the terms
|
||||
of sections 4 and 5, provided that you also convey the
|
||||
machine-readable Corresponding Source under the terms of this License,
|
||||
in one of these ways:
|
||||
|
||||
a) Convey the object code in, or embodied in, a physical product
|
||||
(including a physical distribution medium), accompanied by the
|
||||
Corresponding Source fixed on a durable physical medium
|
||||
customarily used for software interchange.
|
||||
|
||||
b) Convey the object code in, or embodied in, a physical product
|
||||
(including a physical distribution medium), accompanied by a
|
||||
written offer, valid for at least three years and valid for as
|
||||
long as you offer spare parts or customer support for that product
|
||||
model, to give anyone who possesses the object code either (1) a
|
||||
copy of the Corresponding Source for all the software in the
|
||||
product that is covered by this License, on a durable physical
|
||||
medium customarily used for software interchange, for a price no
|
||||
more than your reasonable cost of physically performing this
|
||||
conveying of source, or (2) access to copy the
|
||||
Corresponding Source from a network server at no charge.
|
||||
|
||||
c) Convey individual copies of the object code with a copy of the
|
||||
written offer to provide the Corresponding Source. This
|
||||
alternative is allowed only occasionally and noncommercially, and
|
||||
only if you received the object code with such an offer, in accord
|
||||
with subsection 6b.
|
||||
|
||||
d) Convey the object code by offering access from a designated
|
||||
place (gratis or for a charge), and offer equivalent access to the
|
||||
Corresponding Source in the same way through the same place at no
|
||||
further charge. You need not require recipients to copy the
|
||||
Corresponding Source along with the object code. If the place to
|
||||
copy the object code is a network server, the Corresponding Source
|
||||
may be on a different server (operated by you or a third party)
|
||||
that supports equivalent copying facilities, provided you maintain
|
||||
clear directions next to the object code saying where to find the
|
||||
Corresponding Source. Regardless of what server hosts the
|
||||
Corresponding Source, you remain obligated to ensure that it is
|
||||
available for as long as needed to satisfy these requirements.
|
||||
|
||||
e) Convey the object code using peer-to-peer transmission, provided
|
||||
you inform other peers where the object code and Corresponding
|
||||
Source of the work are being offered to the general public at no
|
||||
charge under subsection 6d.
|
||||
|
||||
A separable portion of the object code, whose source code is excluded
|
||||
from the Corresponding Source as a System Library, need not be
|
||||
included in conveying the object code work.
|
||||
|
||||
A "User Product" is either (1) a "consumer product", which means any
|
||||
tangible personal property which is normally used for personal, family,
|
||||
or household purposes, or (2) anything designed or sold for incorporation
|
||||
into a dwelling. In determining whether a product is a consumer product,
|
||||
doubtful cases shall be resolved in favor of coverage. For a particular
|
||||
product received by a particular user, "normally used" refers to a
|
||||
typical or common use of that class of product, regardless of the status
|
||||
of the particular user or of the way in which the particular user
|
||||
actually uses, or expects or is expected to use, the product. A product
|
||||
is a consumer product regardless of whether the product has substantial
|
||||
commercial, industrial or non-consumer uses, unless such uses represent
|
||||
the only significant mode of use of the product.
|
||||
|
||||
"Installation Information" for a User Product means any methods,
|
||||
procedures, authorization keys, or other information required to install
|
||||
and execute modified versions of a covered work in that User Product from
|
||||
a modified version of its Corresponding Source. The information must
|
||||
suffice to ensure that the continued functioning of the modified object
|
||||
code is in no case prevented or interfered with solely because
|
||||
modification has been made.
|
||||
|
||||
If you convey an object code work under this section in, or with, or
|
||||
specifically for use in, a User Product, and the conveying occurs as
|
||||
part of a transaction in which the right of possession and use of the
|
||||
User Product is transferred to the recipient in perpetuity or for a
|
||||
fixed term (regardless of how the transaction is characterized), the
|
||||
Corresponding Source conveyed under this section must be accompanied
|
||||
by the Installation Information. But this requirement does not apply
|
||||
if neither you nor any third party retains the ability to install
|
||||
modified object code on the User Product (for example, the work has
|
||||
been installed in ROM).
|
||||
|
||||
The requirement to provide Installation Information does not include a
|
||||
requirement to continue to provide support service, warranty, or updates
|
||||
for a work that has been modified or installed by the recipient, or for
|
||||
the User Product in which it has been modified or installed. Access to a
|
||||
network may be denied when the modification itself materially and
|
||||
adversely affects the operation of the network or violates the rules and
|
||||
protocols for communication across the network.
|
||||
|
||||
Corresponding Source conveyed, and Installation Information provided,
|
||||
in accord with this section must be in a format that is publicly
|
||||
documented (and with an implementation available to the public in
|
||||
source code form), and must require no special password or key for
|
||||
unpacking, reading or copying.
|
||||
|
||||
7. Additional Terms.
|
||||
|
||||
"Additional permissions" are terms that supplement the terms of this
|
||||
License by making exceptions from one or more of its conditions.
|
||||
Additional permissions that are applicable to the entire Program shall
|
||||
be treated as though they were included in this License, to the extent
|
||||
that they are valid under applicable law. If additional permissions
|
||||
apply only to part of the Program, that part may be used separately
|
||||
under those permissions, but the entire Program remains governed by
|
||||
this License without regard to the additional permissions.
|
||||
|
||||
When you convey a copy of a covered work, you may at your option
|
||||
remove any additional permissions from that copy, or from any part of
|
||||
it. (Additional permissions may be written to require their own
|
||||
removal in certain cases when you modify the work.) You may place
|
||||
additional permissions on material, added by you to a covered work,
|
||||
for which you have or can give appropriate copyright permission.
|
||||
|
||||
Notwithstanding any other provision of this License, for material you
|
||||
add to a covered work, you may (if authorized by the copyright holders of
|
||||
that material) supplement the terms of this License with terms:
|
||||
|
||||
a) Disclaiming warranty or limiting liability differently from the
|
||||
terms of sections 15 and 16 of this License; or
|
||||
|
||||
b) Requiring preservation of specified reasonable legal notices or
|
||||
author attributions in that material or in the Appropriate Legal
|
||||
Notices displayed by works containing it; or
|
||||
|
||||
c) Prohibiting misrepresentation of the origin of that material, or
|
||||
requiring that modified versions of such material be marked in
|
||||
reasonable ways as different from the original version; or
|
||||
|
||||
d) Limiting the use for publicity purposes of names of licensors or
|
||||
authors of the material; or
|
||||
|
||||
e) Declining to grant rights under trademark law for use of some
|
||||
trade names, trademarks, or service marks; or
|
||||
|
||||
f) Requiring indemnification of licensors and authors of that
|
||||
material by anyone who conveys the material (or modified versions of
|
||||
it) with contractual assumptions of liability to the recipient, for
|
||||
any liability that these contractual assumptions directly impose on
|
||||
those licensors and authors.
|
||||
|
||||
All other non-permissive additional terms are considered "further
|
||||
restrictions" within the meaning of section 10. If the Program as you
|
||||
received it, or any part of it, contains a notice stating that it is
|
||||
governed by this License along with a term that is a further
|
||||
restriction, you may remove that term. If a license document contains
|
||||
a further restriction but permits relicensing or conveying under this
|
||||
License, you may add to a covered work material governed by the terms
|
||||
of that license document, provided that the further restriction does
|
||||
not survive such relicensing or conveying.
|
||||
|
||||
If you add terms to a covered work in accord with this section, you
|
||||
must place, in the relevant source files, a statement of the
|
||||
additional terms that apply to those files, or a notice indicating
|
||||
where to find the applicable terms.
|
||||
|
||||
Additional terms, permissive or non-permissive, may be stated in the
|
||||
form of a separately written license, or stated as exceptions;
|
||||
the above requirements apply either way.
|
||||
|
||||
8. Termination.
|
||||
|
||||
You may not propagate or modify a covered work except as expressly
|
||||
provided under this License. Any attempt otherwise to propagate or
|
||||
modify it is void, and will automatically terminate your rights under
|
||||
this License (including any patent licenses granted under the third
|
||||
paragraph of section 11).
|
||||
|
||||
However, if you cease all violation of this License, then your
|
||||
license from a particular copyright holder is reinstated (a)
|
||||
provisionally, unless and until the copyright holder explicitly and
|
||||
finally terminates your license, and (b) permanently, if the copyright
|
||||
holder fails to notify you of the violation by some reasonable means
|
||||
prior to 60 days after the cessation.
|
||||
|
||||
Moreover, your license from a particular copyright holder is
|
||||
reinstated permanently if the copyright holder notifies you of the
|
||||
violation by some reasonable means, this is the first time you have
|
||||
received notice of violation of this License (for any work) from that
|
||||
copyright holder, and you cure the violation prior to 30 days after
|
||||
your receipt of the notice.
|
||||
|
||||
Termination of your rights under this section does not terminate the
|
||||
licenses of parties who have received copies or rights from you under
|
||||
this License. If your rights have been terminated and not permanently
|
||||
reinstated, you do not qualify to receive new licenses for the same
|
||||
material under section 10.
|
||||
|
||||
9. Acceptance Not Required for Having Copies.
|
||||
|
||||
You are not required to accept this License in order to receive or
|
||||
run a copy of the Program. Ancillary propagation of a covered work
|
||||
occurring solely as a consequence of using peer-to-peer transmission
|
||||
to receive a copy likewise does not require acceptance. However,
|
||||
nothing other than this License grants you permission to propagate or
|
||||
modify any covered work. These actions infringe copyright if you do
|
||||
not accept this License. Therefore, by modifying or propagating a
|
||||
covered work, you indicate your acceptance of this License to do so.
|
||||
|
||||
10. Automatic Licensing of Downstream Recipients.
|
||||
|
||||
Each time you convey a covered work, the recipient automatically
|
||||
receives a license from the original licensors, to run, modify and
|
||||
propagate that work, subject to this License. You are not responsible
|
||||
for enforcing compliance by third parties with this License.
|
||||
|
||||
An "entity transaction" is a transaction transferring control of an
|
||||
organization, or substantially all assets of one, or subdividing an
|
||||
organization, or merging organizations. If propagation of a covered
|
||||
work results from an entity transaction, each party to that
|
||||
transaction who receives a copy of the work also receives whatever
|
||||
licenses to the work the party's predecessor in interest had or could
|
||||
give under the previous paragraph, plus a right to possession of the
|
||||
Corresponding Source of the work from the predecessor in interest, if
|
||||
the predecessor has it or can get it with reasonable efforts.
|
||||
|
||||
You may not impose any further restrictions on the exercise of the
|
||||
rights granted or affirmed under this License. For example, you may
|
||||
not impose a license fee, royalty, or other charge for exercise of
|
||||
rights granted under this License, and you may not initiate litigation
|
||||
(including a cross-claim or counterclaim in a lawsuit) alleging that
|
||||
any patent claim is infringed by making, using, selling, offering for
|
||||
sale, or importing the Program or any portion of it.
|
||||
|
||||
11. Patents.
|
||||
|
||||
A "contributor" is a copyright holder who authorizes use under this
|
||||
License of the Program or a work on which the Program is based. The
|
||||
work thus licensed is called the contributor's "contributor version".
|
||||
|
||||
A contributor's "essential patent claims" are all patent claims
|
||||
owned or controlled by the contributor, whether already acquired or
|
||||
hereafter acquired, that would be infringed by some manner, permitted
|
||||
by this License, of making, using, or selling its contributor version,
|
||||
but do not include claims that would be infringed only as a
|
||||
consequence of further modification of the contributor version. For
|
||||
purposes of this definition, "control" includes the right to grant
|
||||
patent sublicenses in a manner consistent with the requirements of
|
||||
this License.
|
||||
|
||||
Each contributor grants you a non-exclusive, worldwide, royalty-free
|
||||
patent license under the contributor's essential patent claims, to
|
||||
make, use, sell, offer for sale, import and otherwise run, modify and
|
||||
propagate the contents of its contributor version.
|
||||
|
||||
In the following three paragraphs, a "patent license" is any express
|
||||
agreement or commitment, however denominated, not to enforce a patent
|
||||
(such as an express permission to practice a patent or covenant not to
|
||||
sue for patent infringement). To "grant" such a patent license to a
|
||||
party means to make such an agreement or commitment not to enforce a
|
||||
patent against the party.
|
||||
|
||||
If you convey a covered work, knowingly relying on a patent license,
|
||||
and the Corresponding Source of the work is not available for anyone
|
||||
to copy, free of charge and under the terms of this License, through a
|
||||
publicly available network server or other readily accessible means,
|
||||
then you must either (1) cause the Corresponding Source to be so
|
||||
available, or (2) arrange to deprive yourself of the benefit of the
|
||||
patent license for this particular work, or (3) arrange, in a manner
|
||||
consistent with the requirements of this License, to extend the patent
|
||||
license to downstream recipients. "Knowingly relying" means you have
|
||||
actual knowledge that, but for the patent license, your conveying the
|
||||
covered work in a country, or your recipient's use of the covered work
|
||||
in a country, would infringe one or more identifiable patents in that
|
||||
country that you have reason to believe are valid.
|
||||
|
||||
If, pursuant to or in connection with a single transaction or
|
||||
arrangement, you convey, or propagate by procuring conveyance of, a
|
||||
covered work, and grant a patent license to some of the parties
|
||||
receiving the covered work authorizing them to use, propagate, modify
|
||||
or convey a specific copy of the covered work, then the patent license
|
||||
you grant is automatically extended to all recipients of the covered
|
||||
work and works based on it.
|
||||
|
||||
A patent license is "discriminatory" if it does not include within
|
||||
the scope of its coverage, prohibits the exercise of, or is
|
||||
conditioned on the non-exercise of one or more of the rights that are
|
||||
specifically granted under this License. You may not convey a covered
|
||||
work if you are a party to an arrangement with a third party that is
|
||||
in the business of distributing software, under which you make payment
|
||||
to the third party based on the extent of your activity of conveying
|
||||
the work, and under which the third party grants, to any of the
|
||||
parties who would receive the covered work from you, a discriminatory
|
||||
patent license (a) in connection with copies of the covered work
|
||||
conveyed by you (or copies made from those copies), or (b) primarily
|
||||
for and in connection with specific products or compilations that
|
||||
contain the covered work, unless you entered into that arrangement,
|
||||
or that patent license was granted, prior to 28 March 2007.
|
||||
|
||||
Nothing in this License shall be construed as excluding or limiting
|
||||
any implied license or other defenses to infringement that may
|
||||
otherwise be available to you under applicable patent law.
|
||||
|
||||
12. No Surrender of Others' Freedom.
|
||||
|
||||
If conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot convey a
|
||||
covered work so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you may
|
||||
not convey it at all. For example, if you agree to terms that obligate you
|
||||
to collect a royalty for further conveying from those to whom you convey
|
||||
the Program, the only way you could satisfy both those terms and this
|
||||
License would be to refrain entirely from conveying the Program.
|
||||
|
||||
13. Use with the GNU Affero General Public License.
|
||||
|
||||
Notwithstanding any other provision of this License, you have
|
||||
permission to link or combine any covered work with a work licensed
|
||||
under version 3 of the GNU Affero General Public License into a single
|
||||
combined work, and to convey the resulting work. The terms of this
|
||||
License will continue to apply to the part which is the covered work,
|
||||
but the special requirements of the GNU Affero General Public License,
|
||||
section 13, concerning interaction through a network will apply to the
|
||||
combination as such.
|
||||
|
||||
14. Revised Versions of this License.
|
||||
|
||||
The Free Software Foundation may publish revised and/or new versions of
|
||||
the GNU General Public License from time to time. Such new versions will
|
||||
be similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the
|
||||
Program specifies that a certain numbered version of the GNU General
|
||||
Public License "or any later version" applies to it, you have the
|
||||
option of following the terms and conditions either of that numbered
|
||||
version or of any later version published by the Free Software
|
||||
Foundation. If the Program does not specify a version number of the
|
||||
GNU General Public License, you may choose any version ever published
|
||||
by the Free Software Foundation.
|
||||
|
||||
If the Program specifies that a proxy can decide which future
|
||||
versions of the GNU General Public License can be used, that proxy's
|
||||
public statement of acceptance of a version permanently authorizes you
|
||||
to choose that version for the Program.
|
||||
|
||||
Later license versions may give you additional or different
|
||||
permissions. However, no additional obligations are imposed on any
|
||||
author or copyright holder as a result of your choosing to follow a
|
||||
later version.
|
||||
|
||||
15. Disclaimer of Warranty.
|
||||
|
||||
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
|
||||
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
|
||||
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
|
||||
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
|
||||
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
|
||||
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
|
||||
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
||||
|
||||
16. Limitation of Liability.
|
||||
|
||||
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
|
||||
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
|
||||
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
|
||||
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
|
||||
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
|
||||
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
|
||||
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
|
||||
SUCH DAMAGES.
|
||||
|
||||
17. Interpretation of Sections 15 and 16.
|
||||
|
||||
If the disclaimer of warranty and limitation of liability provided
|
||||
above cannot be given local legal effect according to their terms,
|
||||
reviewing courts shall apply local law that most closely approximates
|
||||
an absolute waiver of all civil liability in connection with the
|
||||
Program, unless a warranty or assumption of liability accompanies a
|
||||
copy of the Program in return for a fee.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
How to Apply These Terms to Your New Programs
|
||||
|
||||
If you develop a new program, and you want it to be of the greatest
|
||||
possible use to the public, the best way to achieve this is to make it
|
||||
free software which everyone can redistribute and change under these terms.
|
||||
|
||||
To do so, attach the following notices to the program. It is safest
|
||||
to attach them to the start of each source file to most effectively
|
||||
state the exclusion of warranty; and each file should have at least
|
||||
the "copyright" line and a pointer to where the full notice is found.
|
||||
|
||||
<one line to give the program's name and a brief idea of what it does.>
|
||||
Copyright (C) <year> <name of author>
|
||||
|
||||
This program is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If the program does terminal interaction, make it output a short
|
||||
notice like this when it starts in an interactive mode:
|
||||
|
||||
<program> Copyright (C) <year> <name of author>
|
||||
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||
This is free software, and you are welcome to redistribute it
|
||||
under certain conditions; type `show c' for details.
|
||||
|
||||
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||
parts of the General Public License. Of course, your program's commands
|
||||
might be different; for a GUI interface, you would use an "about box".
|
||||
|
||||
You should also get your employer (if you work as a programmer) or school,
|
||||
if any, to sign a "copyright disclaimer" for the program, if necessary.
|
||||
For more information on this, and how to apply and follow the GNU GPL, see
|
||||
<http://www.gnu.org/licenses/>.
|
||||
|
||||
The GNU General Public License does not permit incorporating your program
|
||||
into proprietary programs. If your program is a subroutine library, you
|
||||
may consider it more useful to permit linking proprietary applications with
|
||||
the library. If this is what you want to do, use the GNU Lesser General
|
||||
Public License instead of this License. But first, please read
|
||||
<http://www.gnu.org/philosophy/why-not-lgpl.html>.
|
||||
Binary file not shown.
@@ -0,0 +1,22 @@
|
||||
## NOTE: Do not edit this file.
|
||||
##
|
||||
vlib work
|
||||
vcom -explicit -93 "../../../PCK_FIO-1.16/PCK_FIO.vhd"
|
||||
vcom -explicit -93 "../src/core/cpu_pkg.vhd"
|
||||
vcom -explicit -93 "../src/core/stack_ctrl.vhd"
|
||||
vcom -explicit -93 "../src/core/reg_dual.vhd"
|
||||
vcom -explicit -93 "../src/core/chipram.vhd"
|
||||
vcom -explicit -93 "../src/core/chipreg.vhd"
|
||||
vcom -explicit -93 "../src/core/pc.vhd"
|
||||
vcom -explicit -93 "../src/core/dpath_ctrl.vhd"
|
||||
vcom -explicit -93 "../src/core/int_ctrl.vhd"
|
||||
vcom -explicit -93 "../src/core/alu.vhd"
|
||||
vcom -explicit -93 "../src/core/cpu.vhd"
|
||||
vcom -explicit -93 "../src/test_irom.vhdl"
|
||||
vcom -explicit -93 "../src/core/tb_cpu.vhd"
|
||||
vsim -t 1ps -lib work tb_cpu
|
||||
do {tb_cpu.wdo}
|
||||
view wave
|
||||
view structure
|
||||
view signals
|
||||
run 50us
|
||||
@@ -0,0 +1,107 @@
|
||||
onerror {resume}
|
||||
quietly WaveActivateNextPane {} 0
|
||||
add wave -noupdate -format Logic /tb_cpu/rst
|
||||
add wave -noupdate -format Logic /tb_cpu/clk
|
||||
add wave -noupdate -format Logic /tb_cpu/ce
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/cpu_active
|
||||
add wave -noupdate -format Logic /tb_cpu/int_in
|
||||
add wave -noupdate -format Logic /tb_cpu/int_ack
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/irom_data
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/irom_addr
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/xmem_din
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/xmem_dout
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/xmem_addr
|
||||
add wave -noupdate -format Logic /tb_cpu/xmem_we
|
||||
add wave -noupdate -format Logic /tb_cpu/xmem_re
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/sram
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/io_sel
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/iphase
|
||||
add wave -noupdate -divider CPU
|
||||
add wave -noupdate -format Literal /tb_cpu/reg
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/dbg_iname
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/cpu_status
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/status_reg
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/ctrl
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/stk_out
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/stk_in
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/stk_reg
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/pc_in
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/pc_next
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/idata
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/int_pc_addr
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/iphase
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/const_data
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/reg_a_dout
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/reg_b_dout
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/reg_din
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/alu_op1
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/alu_op2
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/alu_result
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/alu_status
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/pc_inc
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/pc_load
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/stk_we
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/cmem_we
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/ctrl_iphase
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/was_pcld
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/was_pop2pc
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/int_pc_load
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/int_stk_push
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/stk_push
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/stk_pop
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/status_save
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/status_restore
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/stk_ptr
|
||||
add wave -noupdate -divider Stack
|
||||
add wave -noupdate -format Logic /tb_cpu/clk
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/dbg_iname
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_stack_ctrl/push
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_stack_ctrl/pop
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_stack_ctrl/din
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_stack_ctrl/dout
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_stack_ctrl/mem_we
|
||||
add wave -noupdate -divider Chipram
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_chipram/we_a
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/din_a
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/addr_a
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/dout_a
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_chipram/we_b
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/din_b
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/addr_b
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/dout_b
|
||||
add wave -noupdate -divider Sequencer
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_dpath_ctrl/inst_in
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/iphase_in
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/status_in
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/ctrl_out
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_dpath_ctrl/idout
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_dpath_ctrl/ddout
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/opcode
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/ctrl_lines
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/dbg_iname
|
||||
add wave -noupdate -format Literal -radix hexadecimal -expand /tb_cpu/uut/inst_reg_ab/mem
|
||||
add wave -noupdate -divider {Chip register}
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/creg_addr
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/creg_din
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/creg_dout
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/creg_ctrl_out
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/dbg_iname
|
||||
add wave -noupdate -format Logic /tb_cpu/clk
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/int_exit
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_int_ctrl/int_state
|
||||
TreeUpdate [SetDefaultTree]
|
||||
WaveRestoreCursors {{Cursor 1} {136355 ps} 0}
|
||||
configure wave -namecolwidth 166
|
||||
configure wave -valuecolwidth 101
|
||||
configure wave -justifyvalue left
|
||||
configure wave -signalnamewidth 1
|
||||
configure wave -snapdistance 10
|
||||
configure wave -datasetprefix 0
|
||||
configure wave -rowmargin 4
|
||||
configure wave -childrowmargin 2
|
||||
configure wave -gridoffset 0
|
||||
configure wave -gridperiod 1
|
||||
configure wave -griddelta 40
|
||||
configure wave -timeline 0
|
||||
update
|
||||
WaveRestoreZoom {93532 ps} {206468 ps}
|
||||
@@ -0,0 +1,21 @@
|
||||
## NOTE: Do not edit this file.
|
||||
##
|
||||
vlib work
|
||||
vcom -explicit -93 "../src/core/cpu_pkg.vhd"
|
||||
vcom -explicit -93 "../src/core/stack_ctrl.vhd"
|
||||
vcom -explicit -93 "../src/core/reg_dual.vhd"
|
||||
vcom -explicit -93 "../src/core/chipram.vhd"
|
||||
vcom -explicit -93 "../src/core/pc.vhd"
|
||||
vcom -explicit -93 "../src/core/dpath_ctrl.vhd"
|
||||
vcom -explicit -93 "../src/core/int_ctrl.vhd"
|
||||
vcom -explicit -93 "../src/core/alu.vhd"
|
||||
vcom -explicit -93 "../src/core/cpu.vhd"
|
||||
vcom -explicit -93 "../src/cpu_embedded.vhd"
|
||||
vcom -explicit -93 "../src/tb_cpu_embedded.vhd"
|
||||
vcom -explicit -93 "../src/test_irom.vhdl"
|
||||
vsim -t 1ps -lib work tb_cpu_embedded
|
||||
do {tb_cpu_embedded.wdo}
|
||||
view wave
|
||||
view structure
|
||||
view signals
|
||||
run 10us
|
||||
@@ -0,0 +1,26 @@
|
||||
onerror {resume}
|
||||
quietly WaveActivateNextPane {} 0
|
||||
add wave -noupdate -format Logic /tb_cpu_embedded/rst
|
||||
add wave -noupdate -format Logic /tb_cpu_embedded/clk
|
||||
add wave -noupdate -format Logic /tb_cpu_embedded/ce
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu_embedded/sram
|
||||
add wave -noupdate -format Logic /tb_cpu_embedded/int_in
|
||||
add wave -noupdate -format Logic /tb_cpu_embedded/int_ack
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu_embedded/uut/rom_addr
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu_embedded/uut/rom_data
|
||||
TreeUpdate [SetDefaultTree]
|
||||
WaveRestoreCursors {{Cursor 1} {2168142 ps} 0}
|
||||
configure wave -namecolwidth 143
|
||||
configure wave -valuecolwidth 101
|
||||
configure wave -justifyvalue left
|
||||
configure wave -signalnamewidth 1
|
||||
configure wave -snapdistance 10
|
||||
configure wave -datasetprefix 0
|
||||
configure wave -rowmargin 4
|
||||
configure wave -childrowmargin 2
|
||||
configure wave -gridoffset 0
|
||||
configure wave -gridperiod 1
|
||||
configure wave -griddelta 40
|
||||
configure wave -timeline 0
|
||||
update
|
||||
WaveRestoreZoom {0 ps} {10500 ns}
|
||||
@@ -0,0 +1,22 @@
|
||||
## NOTE: Do not edit this file.
|
||||
##
|
||||
vlib work
|
||||
vcom -explicit -93 "../../../PCK_FIO-1.16/PCK_FIO.vhd"
|
||||
vcom -explicit -93 "../src/core/cpu_pkg.vhd"
|
||||
vcom -explicit -93 "../src/core/stack_ctrl.vhd"
|
||||
vcom -explicit -93 "../src/core/reg_dual.vhd"
|
||||
vcom -explicit -93 "../src/core/chipram.vhd"
|
||||
vcom -explicit -93 "../src/core/chipreg.vhd"
|
||||
vcom -explicit -93 "../src/core/pc.vhd"
|
||||
vcom -explicit -93 "../src/core/dpath_ctrl.vhd"
|
||||
vcom -explicit -93 "../src/core/int_ctrl.vhd"
|
||||
vcom -explicit -93 "../src/core/alu.vhd"
|
||||
vcom -explicit -93 "../src/core/cpu.vhd"
|
||||
vcom -explicit -93 "../src/itest_irom.vhdl"
|
||||
vcom -explicit -93 "../src/tb_cpu_itest.vhd"
|
||||
vsim -t 1ps -lib work tb_cpu
|
||||
do {tb_cpu_itest.wdo}
|
||||
view wave
|
||||
view structure
|
||||
view signals
|
||||
run 400us
|
||||
@@ -0,0 +1,123 @@
|
||||
onerror {resume}
|
||||
quietly WaveActivateNextPane {} 0
|
||||
add wave -noupdate -format Logic /tb_cpu/rst
|
||||
add wave -noupdate -format Logic /tb_cpu/clk
|
||||
add wave -noupdate -format Logic /tb_cpu/ce
|
||||
add wave -noupdate -format Logic /tb_cpu/int_in
|
||||
add wave -noupdate -format Logic /tb_cpu/int_ack
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/irom_data
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/irom_addr
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/xmem_din
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/xmem_dout
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/xmem_addr
|
||||
add wave -noupdate -format Logic /tb_cpu/xmem_we
|
||||
add wave -noupdate -format Logic /tb_cpu/xmem_re
|
||||
add wave -noupdate -format Logic /tb_cpu/xmem_wait
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/sram
|
||||
add wave -noupdate -format Literal -radix hexadecimal -expand /tb_cpu/reg
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/io_sel
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/mem_data
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/mem_addr
|
||||
add wave -noupdate -divider CPU
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/dbg_iname
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/cpu_status
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/status_reg
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/ctrl
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/stk_out
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/stk_in
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/stk_reg
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/pc_in
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/pc_next
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/idata
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/int_pc_addr
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/iphase
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/const_data
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/reg_a_dout
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/reg_b_dout
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/reg_din
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/alu_op1
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/alu_op2
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/alu_result
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/alu_status
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/pc_inc
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/pc_load
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/cpu_active
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/stk_we
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/cmem_we
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/ctrl_iphase
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/was_pcld
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/was_pop2pc
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/int_pc_load
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/int_stk_push
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/stk_push
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/stk_pop
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/status_save
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/status_restore
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/stk_ptr
|
||||
add wave -noupdate -divider Stack
|
||||
add wave -noupdate -format Logic /tb_cpu/clk
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/dbg_iname
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_stack_ctrl/push
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_stack_ctrl/pop
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_stack_ctrl/din
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_stack_ctrl/dout
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_stack_ctrl/mem_we
|
||||
add wave -noupdate -divider Chipram
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_chipram/we_a
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/din_a
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/addr_a
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/dout_a
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_chipram/we_b
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/din_b
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/addr_b
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/dout_b
|
||||
add wave -noupdate -divider Sequencer
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/reg
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_dpath_ctrl/inst_in
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/iphase_in
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/status_in
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/ctrl_out
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_dpath_ctrl/idout
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_dpath_ctrl/ddout
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/opcode
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/ctrl_lines
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/dbg_iname
|
||||
add wave -noupdate -format Literal -radix hexadecimal -expand /tb_cpu/uut/inst_reg_ab/mem
|
||||
add wave -noupdate -divider {Chip register}
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/creg_dout
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/creg_ctrl_out
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/dbg_iname
|
||||
add wave -noupdate -format Logic /tb_cpu/clk
|
||||
add wave -noupdate -divider {Interrup Ctrl.}
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/int_in
|
||||
add wave -noupdate -format Literal -expand /tb_cpu/uut/inst_int_ctrl/ctrl_in
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/int_sampled
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/int_request
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/int_ack
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/int_exit
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/int_ack_out
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/stat_save_out
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/stat_rest_out
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/pc_load_out
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/stk_push_out
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/stk_pop_out
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_int_ctrl/int_state
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/pc_load
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/stk_push
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/stk_pop
|
||||
TreeUpdate [SetDefaultTree]
|
||||
WaveRestoreCursors {{Cursor 1} {53866171 ps} 0}
|
||||
configure wave -namecolwidth 166
|
||||
configure wave -valuecolwidth 101
|
||||
configure wave -justifyvalue left
|
||||
configure wave -signalnamewidth 1
|
||||
configure wave -snapdistance 10
|
||||
configure wave -datasetprefix 0
|
||||
configure wave -rowmargin 4
|
||||
configure wave -childrowmargin 2
|
||||
configure wave -gridoffset 0
|
||||
configure wave -gridperiod 1
|
||||
configure wave -griddelta 40
|
||||
configure wave -timeline 0
|
||||
update
|
||||
WaveRestoreZoom {0 ps} {420 us}
|
||||
@@ -0,0 +1,22 @@
|
||||
## NOTE: Do not edit this file.
|
||||
##
|
||||
vlib work
|
||||
vcom -explicit -93 "../../../PCK_FIO-1.16/PCK_FIO.vhd"
|
||||
vcom -explicit -93 "../src/core/cpu_pkg.vhd"
|
||||
vcom -explicit -93 "../src/core/stack_ctrl.vhd"
|
||||
vcom -explicit -93 "../src/core/reg_dual.vhd"
|
||||
vcom -explicit -93 "../src/core/chipram.vhd"
|
||||
vcom -explicit -93 "../src/core/chipreg.vhd"
|
||||
vcom -explicit -93 "../src/core/pc.vhd"
|
||||
vcom -explicit -93 "../src/core/dpath_ctrl.vhd"
|
||||
vcom -explicit -93 "../src/core/int_ctrl.vhd"
|
||||
vcom -explicit -93 "../src/core/alu.vhd"
|
||||
vcom -explicit -93 "../src/core/cpu.vhd"
|
||||
vcom -explicit -93 "../src/irom_reti_issue.vhdl"
|
||||
vcom -explicit -93 "../src/core/tb_cpu.vhd"
|
||||
vsim -t 1ps -lib work tb_cpu
|
||||
do {tb_cpu_reti_issue.wdo}
|
||||
view wave
|
||||
view structure
|
||||
view signals
|
||||
run 50us
|
||||
@@ -0,0 +1,82 @@
|
||||
onerror {resume}
|
||||
quietly WaveActivateNextPane {} 0
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/iphase
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/ctrl_lines
|
||||
add wave -noupdate -divider {Chip RAM}
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/iphase
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/dbg_iname
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_chipram/clka
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_chipram/clkb
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_chipram/en_a
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_chipram/en_b
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_chipram/we_a
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_chipram/we_b
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/addr_a
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/addr_b
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/din_a
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/din_b
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/dout_a
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_chipram/dout_b
|
||||
add wave -noupdate -divider {Interrupt controller}
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/iphase
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/dbg_iname
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/rst
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/clk
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_int_ctrl/ctrl_in
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/int_in
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/int_reg
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/int_request
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/int_request_clr
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/int_exit
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_int_ctrl/iphase_in
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_int_ctrl/pc_addr_out
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/int_ack
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/stat_save_out
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/stat_rest_out
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/pc_load_out
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/stk_push_out
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_int_ctrl/int_state
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_int_ctrl/int_state_next
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/pc_load
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/stk_push
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/stk_pop
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/stk_pop_out
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_int_ctrl/stk_push_out
|
||||
add wave -noupdate -divider PC
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/iphase
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/dbg_iname
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_pc/rst
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_pc/clk
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_pc/inc
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_pc/load
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_pc/pc_in
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_pc/pc_out
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_pc/pc_next
|
||||
add wave -noupdate -divider {Stack controller}
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/iphase
|
||||
add wave -noupdate -format Literal /tb_cpu/uut/inst_dpath_ctrl/dbg_iname
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_stack_ctrl/rst
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_stack_ctrl/clk
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_stack_ctrl/push
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_stack_ctrl/pop
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_stack_ctrl/ptr_out
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_stack_ctrl/din
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_stack_ctrl/dout
|
||||
add wave -noupdate -format Logic /tb_cpu/uut/inst_stack_ctrl/mem_we
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu/uut/inst_stack_ctrl/ptr
|
||||
TreeUpdate [SetDefaultTree]
|
||||
WaveRestoreCursors {{Cursor 1} {8115990 ps} 0}
|
||||
configure wave -namecolwidth 150
|
||||
configure wave -valuecolwidth 100
|
||||
configure wave -justifyvalue left
|
||||
configure wave -signalnamewidth 1
|
||||
configure wave -snapdistance 10
|
||||
configure wave -datasetprefix 0
|
||||
configure wave -rowmargin 4
|
||||
configure wave -childrowmargin 2
|
||||
configure wave -gridoffset 0
|
||||
configure wave -gridperiod 1
|
||||
configure wave -griddelta 40
|
||||
configure wave -timeline 0
|
||||
update
|
||||
WaveRestoreZoom {8048536 ps} {8340629 ps}
|
||||
@@ -0,0 +1,21 @@
|
||||
## NOTE: Do not edit this file.
|
||||
##
|
||||
vlib work
|
||||
vcom -explicit -93 "../src/core/cpu_pkg.vhd"
|
||||
vcom -explicit -93 "../src/core/stack_ctrl.vhd"
|
||||
vcom -explicit -93 "../src/core/reg_dual.vhd"
|
||||
vcom -explicit -93 "../src/core/chipram.vhd"
|
||||
vcom -explicit -93 "../src/core/pc.vhd"
|
||||
vcom -explicit -93 "../src/core/dpath_ctrl.vhd"
|
||||
vcom -explicit -93 "../src/core/int_ctrl.vhd"
|
||||
vcom -explicit -93 "../src/core/alu.vhd"
|
||||
vcom -explicit -93 "../src/core/cpu.vhd"
|
||||
vcom -explicit -93 "../src/cpu_embedded.vhd"
|
||||
vcom -explicit -93 "../src/tb_cpu_embedded.vhd"
|
||||
vcom -explicit -93 "../src/mul8x8_irom.vhdl"
|
||||
vsim -t 1ps -lib work tb_cpu_embedded
|
||||
do {tb_mul8x8.wdo}
|
||||
view wave
|
||||
view structure
|
||||
view signals
|
||||
run 10us
|
||||
@@ -0,0 +1,31 @@
|
||||
onerror {resume}
|
||||
quietly WaveActivateNextPane {} 0
|
||||
add wave -noupdate -format Logic /tb_cpu_embedded/uut/inst_cpu/rst
|
||||
add wave -noupdate -format Logic /tb_cpu_embedded/uut/inst_cpu/clk
|
||||
add wave -noupdate -format Logic /tb_cpu_embedded/uut/inst_cpu/ce
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu_embedded/uut/inst_cpu/instr_din
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu_embedded/uut/inst_cpu/instr_addr
|
||||
add wave -noupdate -format Literal /tb_cpu_embedded/uut/inst_cpu/cpu_status
|
||||
add wave -noupdate -format Literal /tb_cpu_embedded/uut/inst_cpu/status_reg
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu_embedded/uut/inst_cpu/alu_op1
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu_embedded/uut/inst_cpu/alu_op2
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_cpu_embedded/uut/inst_cpu/alu_result
|
||||
add wave -noupdate -format Literal /tb_cpu_embedded/uut/inst_cpu/alu_status
|
||||
add wave -noupdate -format Literal /tb_cpu_embedded/uut/inst_cpu/inst_dpath_ctrl/dbg_iname
|
||||
add wave -noupdate -format Literal -radix hexadecimal -expand /tb_cpu_embedded/uut/inst_cpu/inst_reg_ab/mem
|
||||
TreeUpdate [SetDefaultTree]
|
||||
WaveRestoreCursors {{Cursor 1} {529679 ps} 0}
|
||||
configure wave -namecolwidth 143
|
||||
configure wave -valuecolwidth 101
|
||||
configure wave -justifyvalue left
|
||||
configure wave -signalnamewidth 1
|
||||
configure wave -snapdistance 10
|
||||
configure wave -datasetprefix 0
|
||||
configure wave -rowmargin 4
|
||||
configure wave -childrowmargin 2
|
||||
configure wave -gridoffset 0
|
||||
configure wave -gridperiod 1
|
||||
configure wave -griddelta 40
|
||||
configure wave -timeline 0
|
||||
update
|
||||
WaveRestoreZoom {9002500 ps} {10052500 ps}
|
||||
@@ -0,0 +1,236 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The arithmetic logic unit
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
entity alu is
|
||||
Generic (
|
||||
data_width : integer := 8
|
||||
);
|
||||
Port (
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
op_en : in STD_LOGIC;
|
||||
cy_in : in STD_LOGIC;
|
||||
op1_in : in unsigned (data_width-1 downto 0);
|
||||
op2_in : in unsigned (data_width-1 downto 0);
|
||||
opsel : in alu_op_t;
|
||||
res_out : out unsigned (data_width-1 downto 0);
|
||||
stat_load : in STD_LOGIC;
|
||||
stat_in : in alu_status_t;
|
||||
stat_out : out alu_status_t
|
||||
);
|
||||
end alu;
|
||||
|
||||
architecture Behavioral of alu is
|
||||
|
||||
signal sum_cy, sh_cy, sum_cy_in, sh_cy_in, left_shift, add_subn : STD_LOGIC;
|
||||
signal result, sum_res, lf_res, sh_res, res_reg : unsigned (data_width-1 downto 0);
|
||||
signal status, stat_reg : alu_status_t;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
function test_zero(arg : unsigned) return STD_LOGIC is
|
||||
variable result : STD_LOGIC;
|
||||
begin
|
||||
result := '0';
|
||||
for i in arg'range loop
|
||||
result := result or To_X01(arg(i));
|
||||
end loop;
|
||||
|
||||
return not result;
|
||||
end test_zero;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
begin
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
proc_logic_func:
|
||||
process (op1_in, op2_in, opsel)
|
||||
begin
|
||||
|
||||
case opsel is
|
||||
when op1_and_op2 =>
|
||||
lf_res <= op1_in and op2_in;
|
||||
when op1_or_op2 =>
|
||||
lf_res <= op1_in or op2_in;
|
||||
when op1_xor_op2 =>
|
||||
lf_res <= op1_in xor op2_in;
|
||||
when others =>
|
||||
lf_res <= (others => '-');
|
||||
end case;
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
proc_shift_func:
|
||||
process (op1_in, left_shift, sh_cy_in)
|
||||
begin
|
||||
if left_shift = '1' then
|
||||
sh_res <= op1_in(op1_in'left-1 downto op1_in'right) & sh_cy_in;
|
||||
sh_cy <= op1_in(op1_in'left);
|
||||
else
|
||||
sh_res <= sh_cy_in & op1_in(op1_in'left downto op1_in'right+1);
|
||||
sh_cy <= op1_in(op1_in'right);
|
||||
end if;
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
proc_alu_out:
|
||||
process(opsel, op1_in, op2_in, res_reg, stat_reg, lf_res, sum_res, sh_res, sum_cy, sh_cy, cy_in)
|
||||
|
||||
begin
|
||||
|
||||
case opsel is
|
||||
|
||||
when op1_add_op2 | op1_sub_op2 | op1_addc_op2 | op1_subc_op2 =>
|
||||
status.zero <= test_zero(res_reg);
|
||||
status.carry <= sum_cy;
|
||||
result <= sum_res;
|
||||
when op1_and_op2 | op1_or_op2 | op1_xor_op2 =>
|
||||
status.zero <= test_zero(res_reg);
|
||||
status.carry <= stat_reg.carry;
|
||||
result <= lf_res;
|
||||
when shl_op | shr_op | rol_op | ror_op | rolc_op | rorc_op =>
|
||||
status.zero <= test_zero(res_reg);
|
||||
status.carry <= sh_cy;
|
||||
result <= sh_res;
|
||||
when swap_op =>
|
||||
result <= op1_in(op1_in'left-op1_in'length/2 downto op1_in'right) & op1_in(op1_in'left downto op1_in'right+op1_in'length/2);
|
||||
status <= stat_reg;
|
||||
when others =>
|
||||
result <= op2_in;
|
||||
status.zero <= stat_reg.zero;
|
||||
status.carry <= stat_reg.carry or cy_in;
|
||||
end case;
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
proc_alu_in:
|
||||
process(opsel, op1_in, stat_reg)
|
||||
|
||||
begin
|
||||
|
||||
add_subn <= '-';
|
||||
sum_cy_in <= '-';
|
||||
sh_cy_in <= '-';
|
||||
left_shift <= '-';
|
||||
|
||||
case opsel is
|
||||
|
||||
when op1_add_op2 =>
|
||||
sum_cy_in <= '0';
|
||||
add_subn <= '1';
|
||||
|
||||
when op1_sub_op2 =>
|
||||
sum_cy_in <= '0';
|
||||
add_subn <= '0';
|
||||
|
||||
when op1_addc_op2 =>
|
||||
sum_cy_in <= stat_reg.carry;
|
||||
add_subn <= '1';
|
||||
|
||||
when op1_subc_op2 =>
|
||||
sum_cy_in <= stat_reg.carry;
|
||||
add_subn <= '0';
|
||||
|
||||
when shl_op =>
|
||||
sh_cy_in <= '0';
|
||||
left_shift <= '1';
|
||||
|
||||
when shr_op =>
|
||||
sh_cy_in <= '0';
|
||||
left_shift <= '0';
|
||||
|
||||
when rol_op =>
|
||||
sh_cy_in <= op1_in(op1_in'left);
|
||||
left_shift <= '1';
|
||||
|
||||
when ror_op =>
|
||||
sh_cy_in <= op1_in(op1_in'right);
|
||||
left_shift <= '0';
|
||||
|
||||
when rolc_op =>
|
||||
sh_cy_in <= stat_reg.carry;
|
||||
left_shift <= '1';
|
||||
|
||||
when rorc_op =>
|
||||
sh_cy_in <= stat_reg.carry;
|
||||
left_shift <= '0';
|
||||
|
||||
when others => null;
|
||||
|
||||
end case;
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
proc_res_reg:
|
||||
process(clk, rst, op_en, stat_load, res_reg, stat_reg)
|
||||
begin
|
||||
if rst = '1' then
|
||||
res_reg <= (others => '0');
|
||||
stat_reg <= (others => '0');
|
||||
elsif rising_edge(clk) then
|
||||
if op_en = '1' then
|
||||
res_reg <= result;
|
||||
stat_reg <= status;
|
||||
elsif stat_load = '1' then
|
||||
stat_reg <= stat_in;
|
||||
end if;
|
||||
end if;
|
||||
res_out <= res_reg;
|
||||
stat_out <= stat_reg;
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
alu_addsub:
|
||||
process(op1_in, op2_in, sum_cy_in, add_subn)
|
||||
variable sum : unsigned(data_width+1 downto 0);
|
||||
variable op1, op2 : unsigned(data_width+1 downto 0);
|
||||
begin
|
||||
if add_subn = '1' then
|
||||
op1 := '0' & op1_in & '1';
|
||||
op2 := '0' & op2_in & sum_cy_in;
|
||||
sum := op1 + op2;
|
||||
else
|
||||
op1 := '0' & op1_in & not sum_cy_in;
|
||||
op2 := '0' & op2_in & '1';
|
||||
sum := op1 - op2;
|
||||
end if;
|
||||
|
||||
-- Form sum + carry
|
||||
sum_res <= sum(data_width downto 1);
|
||||
sum_cy <= sum(sum'left);
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
end Behavioral;
|
||||
|
||||
@@ -0,0 +1,85 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: On-chip RAM
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
entity chipram is
|
||||
Generic (
|
||||
addr_width : integer := 3;
|
||||
data_width : integer := 8
|
||||
);
|
||||
Port (
|
||||
clka : in STD_LOGIC;
|
||||
clkb : in STD_LOGIC;
|
||||
en_a : in STD_LOGIC;
|
||||
en_b : in STD_LOGIC;
|
||||
we_a : in STD_LOGIC;
|
||||
we_b : in STD_LOGIC;
|
||||
addr_a : in unsigned (addr_width-1 downto 0);
|
||||
addr_b : in unsigned (addr_width-1 downto 0);
|
||||
din_a : in unsigned (data_width-1 downto 0);
|
||||
din_b : in unsigned (data_width-1 downto 0);
|
||||
dout_a : out unsigned (data_width-1 downto 0);
|
||||
dout_b : out unsigned (data_width-1 downto 0)
|
||||
);
|
||||
end chipram;
|
||||
|
||||
architecture Behavioral of chipram is
|
||||
|
||||
constant depth : integer := 2**addr_width;
|
||||
type RAMtype is array (0 to depth-1) of unsigned (data_width-1 downto 0);
|
||||
shared variable RAM : RAMtype;
|
||||
|
||||
begin
|
||||
|
||||
process (clka)
|
||||
begin
|
||||
if clka'event and clka = '1' then
|
||||
if en_a = '1' then
|
||||
if we_a = '1' then
|
||||
RAM(to_integer(addr_a)) := din_a;
|
||||
end if;
|
||||
dout_a <= RAM(to_integer(addr_a));
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
process (clkb)
|
||||
begin
|
||||
if clkb'event and clkb = '1' then
|
||||
if en_b = '1' then
|
||||
if we_b = '1' then
|
||||
RAM(to_integer(addr_b)) := din_b;
|
||||
end if;
|
||||
dout_b <= RAM(to_integer(addr_b));
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
|
||||
end Behavioral;
|
||||
|
||||
@@ -0,0 +1,123 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: On-Chip registers
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
entity chipreg is
|
||||
Port (
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
we : in STD_LOGIC;
|
||||
addr : in dmem_addr_t;
|
||||
din : in dmem_data_t;
|
||||
dout : out dmem_data_t;
|
||||
ctrl_in : in creg_ctrl_in_t;
|
||||
ctrl_out : out creg_ctrl_out_t
|
||||
);
|
||||
end chipreg;
|
||||
|
||||
architecture Behavioral of chipreg is
|
||||
|
||||
signal reg_page_sel : page_sel_t;
|
||||
signal reg_int_ctrl : int_ctrl_in_t;
|
||||
signal reg_stk_high : unsigned(IMEM_ADDR_WIDTH-DMEM_ADDR_WIDTH-1 downto 0);
|
||||
signal reg_cmem_high : unsigned(IMEM_ADDR_WIDTH-DMEM_ADDR_WIDTH-1 downto 0);
|
||||
|
||||
begin
|
||||
|
||||
proc_assign_ctrl_lines:
|
||||
process (clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
ctrl_out.page_sel <= reg_page_sel;
|
||||
ctrl_out.int_ctrl <= reg_int_ctrl;
|
||||
ctrl_out.stk_high <= reg_stk_high;
|
||||
ctrl_out.cmem_high <= reg_cmem_high;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
proc_reg_write:
|
||||
process (rst, clk)
|
||||
begin
|
||||
if rst = '1' then
|
||||
reg_stk_high <= (others => '0');
|
||||
reg_cmem_high <= (others => '0');
|
||||
reg_page_sel <= (others => '0');
|
||||
reg_int_ctrl.enable <= '0';
|
||||
reg_int_ctrl.polarity <= '1';
|
||||
reg_int_ctrl.edge_sens <= '1';
|
||||
elsif rising_edge(clk) then
|
||||
reg_int_ctrl.request <= '0';
|
||||
if we = '1' then
|
||||
case addr is
|
||||
when X"01" =>
|
||||
reg_page_sel(page_sel_t'range) <= din(page_sel_t'range);
|
||||
when X"03" =>
|
||||
reg_int_ctrl.enable <= din(0);
|
||||
reg_int_ctrl.polarity <= din(1);
|
||||
reg_int_ctrl.edge_sens <= din(2);
|
||||
reg_int_ctrl.request <= din(7);
|
||||
when X"04" =>
|
||||
reg_cmem_high <= din(IMEM_ADDR_WIDTH-DMEM_ADDR_WIDTH-1 downto 0);
|
||||
when X"05" =>
|
||||
reg_stk_high <= din(IMEM_ADDR_WIDTH-DMEM_ADDR_WIDTH-1 downto 0);
|
||||
when others => null;
|
||||
end case;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
proc_reg_read:
|
||||
process (clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
case addr is
|
||||
when X"00" => -- Revison
|
||||
dout <= to_unsigned(REVISION, dmem_data_t'length);
|
||||
when X"01" => -- Control 0
|
||||
dout <= (7 downto page_sel_t'length => '0') & reg_page_sel;
|
||||
when X"02" => -- CPU status
|
||||
dout <= "000000" & ctrl_in.alu.carry & ctrl_in.alu.zero;
|
||||
when X"03" => -- Interrupt control
|
||||
dout <= "00000" & reg_int_ctrl.edge_sens & reg_int_ctrl.polarity & reg_int_ctrl.enable;
|
||||
when X"04" => -- Upper stack bits out
|
||||
dout <= "0000" & reg_cmem_high;
|
||||
when X"05" => -- Upper cmem bits out
|
||||
dout <= "0000" & reg_stk_high;
|
||||
when others =>
|
||||
if addr(0) = '0' then
|
||||
dout <= X"DE";
|
||||
else
|
||||
dout <= X"AD";
|
||||
end if;
|
||||
end case;
|
||||
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end Behavioral;
|
||||
|
||||
@@ -0,0 +1,566 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: JCPU top file
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
entity cpu is
|
||||
Generic (
|
||||
use_instr_register : boolean := false;
|
||||
use_ctrl_rom : boolean := true
|
||||
|
||||
);
|
||||
Port (
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
int_in : in STD_LOGIC;
|
||||
int_ack : out STD_LOGIC;
|
||||
xmem_wait : in STD_LOGIC;
|
||||
xmem_we : out STD_LOGIC;
|
||||
xmem_re : out STD_LOGIC;
|
||||
instr_din : in unsigned (IMEM_DATA_WIDTH-1 downto 0);
|
||||
instr_addr : out unsigned (IMEM_ADDR_WIDTH-1 downto 0);
|
||||
xmem_din : in unsigned (DMEM_DATA_WIDTH-1 downto 0);
|
||||
xmem_dout : out unsigned (DMEM_DATA_WIDTH-1 downto 0);
|
||||
xmem_addr : out unsigned (DMEM_ADDR_WIDTH-1 downto 0);
|
||||
io_sel : out std_logic
|
||||
);
|
||||
end cpu;
|
||||
|
||||
architecture rtl of cpu is
|
||||
|
||||
COMPONENT stack_ctrl
|
||||
GENERIC (
|
||||
addr_width : integer
|
||||
);
|
||||
Port (
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
push : in STD_LOGIC;
|
||||
pop : in STD_LOGIC;
|
||||
din : in inst_addr_t;
|
||||
dout : out inst_addr_t;
|
||||
mem_we : out STD_LOGIC;
|
||||
ptr_out : out unsigned (addr_width-1 downto 0)
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
COMPONENT pc
|
||||
Port (
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
inc : in STD_LOGIC;
|
||||
load : in STD_LOGIC;
|
||||
pc_in : in inst_addr_t;
|
||||
pc_out : out inst_addr_t;
|
||||
pc_next : out inst_addr_t
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
COMPONENT dpath_ctrl
|
||||
GENERIC (
|
||||
use_rom : boolean
|
||||
);
|
||||
Port (
|
||||
inst_in : in inst_t;
|
||||
iphase_in : in iphase_t;
|
||||
status_in : in cpu_status_t;
|
||||
ctrl_out : out dpath_ctrl_out_t;
|
||||
idout : out inst_addr_t;
|
||||
ddout : out dmem_data_t
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
COMPONENT int_ctrl
|
||||
Port (
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
ctrl_in : in int_ctrl_in_t;
|
||||
int_in : in STD_LOGIC;
|
||||
int_exit : in STD_LOGIC;
|
||||
iphase_in : in iphase_t;
|
||||
int_ack_out : out STD_LOGIC;
|
||||
stat_save_out : out STD_LOGIC;
|
||||
stat_rest_out : out STD_LOGIC;
|
||||
pc_addr_out : out inst_addr_t;
|
||||
pc_load_out : out STD_LOGIC;
|
||||
stk_push_out : out STD_LOGIC;
|
||||
stk_pop_out : out STD_LOGIC
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
COMPONENT reg_dual
|
||||
GENERIC (
|
||||
addr_width : integer;
|
||||
data_width : integer
|
||||
);
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
we_a : in STD_LOGIC;
|
||||
ptr_a : in reg_ptr_t;
|
||||
ptr_b : in reg_ptr_t;
|
||||
din_a : in unsigned (data_width-1 downto 0);
|
||||
dout_a : out unsigned (data_width-1 downto 0);
|
||||
dout_b : out unsigned (data_width-1 downto 0)
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
COMPONENT chipram
|
||||
GENERIC (
|
||||
addr_width : integer;
|
||||
data_width : integer
|
||||
);
|
||||
Port (
|
||||
clka : in STD_LOGIC;
|
||||
clkb : in STD_LOGIC;
|
||||
en_a : in STD_LOGIC;
|
||||
en_b : in STD_LOGIC;
|
||||
we_a : in STD_LOGIC;
|
||||
we_b : in STD_LOGIC;
|
||||
addr_a : in unsigned (addr_width-1 downto 0);
|
||||
addr_b : in unsigned (addr_width-1 downto 0);
|
||||
din_a : in unsigned (data_width-1 downto 0);
|
||||
din_b : in unsigned (data_width-1 downto 0);
|
||||
dout_a : out unsigned (data_width-1 downto 0);
|
||||
dout_b : out unsigned (data_width-1 downto 0)
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
COMPONENT chipreg
|
||||
Port (
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
we : in STD_LOGIC;
|
||||
addr : in dmem_addr_t;
|
||||
din : in dmem_data_t;
|
||||
dout : out dmem_data_t;
|
||||
ctrl_in : in creg_ctrl_in_t;
|
||||
ctrl_out : out creg_ctrl_out_t
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
COMPONENT alu
|
||||
GENERIC (
|
||||
data_width : integer := 8
|
||||
);
|
||||
Port (
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
op_en : in STD_LOGIC;
|
||||
cy_in : in STD_LOGIC;
|
||||
op1_in : in unsigned (data_width-1 downto 0);
|
||||
op2_in : in unsigned (data_width-1 downto 0);
|
||||
opsel : in alu_op_t;
|
||||
res_out : out unsigned (data_width-1 downto 0);
|
||||
stat_load : in STD_LOGIC;
|
||||
stat_in : in alu_status_t;
|
||||
stat_out : out alu_status_t
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
signal cpu_status, status_reg : cpu_status_t; -- := cpu_status_t(others => '0');
|
||||
signal ctrl : dpath_ctrl_out_t;
|
||||
signal stk_out : inst_addr_t;
|
||||
signal stk_in : inst_addr_t;
|
||||
signal stk_reg : inst_addr_t;
|
||||
signal pc_in, pc_out, pc_next, idata, int_pc_addr : inst_addr_t;
|
||||
signal iphase : iphase_t;
|
||||
signal const_data, reg_a_dout, reg_b_dout : dmem_data_t;
|
||||
signal reg_din : dmem_data_t;
|
||||
signal alu_op1, alu_op2, alu_result : dmem_data_t;
|
||||
signal alu_status : alu_status_t;
|
||||
signal pc_inc, pc_load, cpu_active, stk_we, cmem_we, creg_we : STD_LOGIC;
|
||||
signal ctrl_inst : inst_t;
|
||||
signal ctrl_iphase : iphase_t;
|
||||
signal was_pcld, was_pop2pc, int_pc_load, int_stk_push, int_stk_pop, stk_push, stk_pop : STD_LOGIC;
|
||||
signal status_save, status_restore : STD_LOGIC;
|
||||
signal creg_dout : dmem_data_t;
|
||||
signal cmem_din, cmem_dout : inst_addr_t;
|
||||
signal stk_addr, cmem_addr : unsigned(CHIPRAM_SIZE_BITS-1 downto 0);
|
||||
signal stk_ptr : unsigned(STACK_SIZE_BITS-1 downto 0);
|
||||
signal creg_ctrl_out : creg_ctrl_out_t;
|
||||
signal creg_ctrl_in : creg_ctrl_in_t;
|
||||
signal irq_out : std_logic;
|
||||
signal xio_sel, cio_sel : std_logic;
|
||||
signal mem_data : dmem_data_t;
|
||||
signal mem_addr : dmem_data_t;
|
||||
|
||||
begin
|
||||
io_sel <= xio_sel;
|
||||
instr_addr <= pc_out;
|
||||
pc_inc <= cpu_active and ctrl.lines.pc_inc;
|
||||
stk_addr <= '0' & stk_ptr;
|
||||
cpu_status.alu <= alu_status;
|
||||
cpu_status.xmem_wait <= xmem_wait;
|
||||
creg_ctrl_in.alu <= alu_status;
|
||||
|
||||
xmem_dout <= mem_data;
|
||||
xmem_addr <= mem_addr;
|
||||
cmem_din <= creg_ctrl_out.cmem_high & mem_data;
|
||||
cmem_addr <= '1' & creg_ctrl_out.page_sel & mem_addr(MIN(cmem_addr'length-creg_ctrl_out.page_sel'length-1, mem_addr'length)-1 downto 0);
|
||||
|
||||
--------------------------------------------------------------------
|
||||
mem_ctrl_lines:
|
||||
process(ctrl.lines)
|
||||
begin
|
||||
xio_sel <= '0';
|
||||
xmem_re <= '0';
|
||||
xmem_we <= '0';
|
||||
cio_sel <= '0';
|
||||
cmem_we <= '0';
|
||||
creg_we <= '0';
|
||||
|
||||
case ctrl.lines.mem_access is
|
||||
when xmem_access =>
|
||||
xmem_re <= ctrl.lines.mem_read;
|
||||
xmem_we <= ctrl.lines.mem_write;
|
||||
when xio_access =>
|
||||
xio_sel <= '1';
|
||||
xmem_re <= ctrl.lines.mem_read;
|
||||
xmem_we <= ctrl.lines.mem_write;
|
||||
when cmem_access =>
|
||||
cmem_we <= ctrl.lines.mem_write;
|
||||
when cio_access =>
|
||||
cio_sel <= '1';
|
||||
creg_we <= ctrl.lines.mem_write;
|
||||
when others => null;
|
||||
end case;
|
||||
end process;
|
||||
|
||||
iphase_counter:
|
||||
process(rst, clk, ce)
|
||||
variable pos : integer;
|
||||
begin
|
||||
if rst = '1' then
|
||||
iphase <= iphase_t'low;
|
||||
cpu_active <= '0';
|
||||
elsif rising_edge(clk) then
|
||||
cpu_active <= '0';
|
||||
if ce = '1' then
|
||||
cpu_active <= '1';
|
||||
if iphase = iphase_t'high then
|
||||
iphase <= iphase_t'low;
|
||||
else
|
||||
iphase <= iphase + 1;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
gen_instr_reg:
|
||||
if use_instr_register = true generate
|
||||
|
||||
instr_reg:
|
||||
process (rst, clk, ce)
|
||||
begin
|
||||
if rst = '1' then
|
||||
ctrl_inst <= (others => '0');
|
||||
ctrl_iphase <= 0;
|
||||
elsif rising_edge(clk) and ce = '1' then
|
||||
ctrl_inst <= instr_din;
|
||||
ctrl_iphase <= iphase;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end generate;
|
||||
|
||||
gen_instr_direct:
|
||||
if use_instr_register = false generate
|
||||
|
||||
ctrl_inst <= instr_din;
|
||||
ctrl_iphase <= iphase;
|
||||
|
||||
end generate;
|
||||
|
||||
status_register:
|
||||
process(clk, status_save)
|
||||
begin
|
||||
if rising_edge(clk) and status_save = '1' then
|
||||
status_reg.alu <= alu_status;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
pc_pushpop:
|
||||
process(ctrl.lines, int_pc_load, int_stk_push, int_stk_pop, was_pop2pc)
|
||||
begin
|
||||
pc_load <= ctrl.lines.pc_load or int_pc_load;
|
||||
stk_push <= (ctrl.lines.stk_pushd or ctrl.lines.stk_push) or (int_stk_push and not was_pop2pc);
|
||||
stk_pop <= ctrl.lines.stk_popd or int_stk_pop or (ctrl.lines.stk_pop and not int_pc_load);
|
||||
end process;
|
||||
|
||||
lines_delay:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
was_pcld <= ctrl.lines.pc_load;
|
||||
was_pop2pc <= ctrl.lines.stk_pop and ctrl.lines.pc_load;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
stk_mux:
|
||||
process(ctrl.lines, was_pcld, int_stk_push, pc_next, idata, reg_a_dout, creg_ctrl_out)
|
||||
begin
|
||||
if was_pcld = '1' and int_stk_push = '1' then
|
||||
stk_in <= idata;
|
||||
elsif ctrl.lines.stk_pushd = '1' then
|
||||
stk_in <= creg_ctrl_out.stk_high & reg_a_dout;
|
||||
else
|
||||
stk_in <= pc_next;
|
||||
end if;
|
||||
|
||||
end process;
|
||||
|
||||
pc_mux:
|
||||
process(ctrl.lines, int_pc_load, int_stk_pop, idata, int_pc_addr, stk_out)
|
||||
begin
|
||||
|
||||
pc_in <= stk_out;
|
||||
if int_pc_load = '1' then
|
||||
if int_stk_pop = '0' then
|
||||
pc_in <= int_pc_addr;
|
||||
end if;
|
||||
elsif ctrl.lines.pc_load = '1' then
|
||||
if ctrl.lines.stk_pop = '0' then
|
||||
pc_in <= idata;
|
||||
end if;
|
||||
end if;
|
||||
|
||||
end process;
|
||||
|
||||
mem_data_mux:
|
||||
process(ctrl.lines.ddata_src_sel, reg_a_dout, reg_b_dout, const_data, creg_ctrl_out)
|
||||
begin
|
||||
case ctrl.lines.ddata_src_sel is
|
||||
when reg_a =>
|
||||
mem_data <= reg_a_dout;
|
||||
when reg_b =>
|
||||
mem_data <= reg_b_dout;
|
||||
when const =>
|
||||
mem_data <= const_data;
|
||||
when others =>
|
||||
mem_data <= const_data;
|
||||
end case;
|
||||
|
||||
end process;
|
||||
|
||||
mem_addr_mux:
|
||||
process(ctrl.lines.daddr_src_sel, reg_a_dout, reg_b_dout, const_data, creg_ctrl_out.page_sel)
|
||||
begin
|
||||
case ctrl.lines.daddr_src_sel is
|
||||
when reg_a =>
|
||||
mem_addr <= reg_a_dout;
|
||||
when reg_b =>
|
||||
mem_addr <= reg_b_dout;
|
||||
when const =>
|
||||
mem_addr <= const_data;
|
||||
when others =>
|
||||
mem_addr <= const_data;
|
||||
end case;
|
||||
|
||||
end process;
|
||||
|
||||
reg_in_mux:
|
||||
process(ctrl.lines.reg_src_sel, cio_sel, xmem_din, alu_result, stk_out, cmem_dout, creg_dout)
|
||||
variable data : dmem_data_t;
|
||||
begin
|
||||
case ctrl.lines.reg_src_sel is
|
||||
when xmem_src =>
|
||||
data := xmem_din;
|
||||
when cmem_src =>
|
||||
if cio_sel = '0' then
|
||||
data := cmem_dout(dmem_data_t'range);
|
||||
else
|
||||
data := creg_dout(dmem_data_t'range);
|
||||
end if;
|
||||
when stk_src =>
|
||||
data := stk_out(dmem_data_t'range);
|
||||
when others =>
|
||||
data := alu_result;
|
||||
end case;
|
||||
|
||||
reg_din <= data;
|
||||
|
||||
end process;
|
||||
|
||||
alu_op1_mux:
|
||||
process(ctrl.lines.alu_op1_src_sel, reg_a_dout, reg_b_dout, const_data)
|
||||
variable data : dmem_data_t;
|
||||
begin
|
||||
case ctrl.lines.alu_op1_src_sel is
|
||||
when reg_a =>
|
||||
data := reg_a_dout;
|
||||
when reg_b =>
|
||||
data := reg_b_dout;
|
||||
when others =>
|
||||
data := const_data;
|
||||
end case;
|
||||
|
||||
alu_op1 <= data;
|
||||
|
||||
end process;
|
||||
|
||||
alu_op2_mux:
|
||||
process(ctrl.lines.alu_op2_src_sel, reg_a_dout, reg_b_dout, const_data)
|
||||
variable data : dmem_data_t;
|
||||
begin
|
||||
case ctrl.lines.alu_op2_src_sel is
|
||||
when reg_a =>
|
||||
data := reg_a_dout;
|
||||
when reg_b =>
|
||||
data := reg_b_dout;
|
||||
when others =>
|
||||
data := const_data;
|
||||
end case;
|
||||
|
||||
alu_op2 <= data;
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------
|
||||
inst_stack_ctrl: stack_ctrl
|
||||
GENERIC MAP (
|
||||
addr_width => STACK_SIZE_BITS
|
||||
)
|
||||
PORT MAP(
|
||||
rst => rst,
|
||||
clk => clk,
|
||||
push => stk_push,
|
||||
pop => stk_pop,
|
||||
dout => stk_reg,
|
||||
din => stk_in,
|
||||
ptr_out => stk_ptr,
|
||||
mem_we => stk_we
|
||||
);
|
||||
|
||||
inst_pc: pc
|
||||
PORT MAP(
|
||||
rst => rst,
|
||||
clk => clk,
|
||||
inc => pc_inc,
|
||||
load => pc_load,
|
||||
pc_in => pc_in,
|
||||
pc_out => pc_out,
|
||||
pc_next => pc_next
|
||||
);
|
||||
|
||||
inst_dpath_ctrl: dpath_ctrl
|
||||
GENERIC MAP (
|
||||
use_rom => use_ctrl_rom
|
||||
)
|
||||
PORT MAP(
|
||||
inst_in => ctrl_inst,
|
||||
iphase_in => ctrl_iphase,
|
||||
status_in => cpu_status,
|
||||
ctrl_out => ctrl,
|
||||
ddout => const_data,
|
||||
idout => idata
|
||||
);
|
||||
|
||||
inst_int_ctrl: int_ctrl
|
||||
PORT MAP(
|
||||
rst => rst,
|
||||
clk => clk,
|
||||
ctrl_in => creg_ctrl_out.int_ctrl,
|
||||
int_in => int_in,
|
||||
int_ack_out => int_ack,
|
||||
int_exit => ctrl.lines.int_exit,
|
||||
iphase_in => ctrl_iphase,
|
||||
stat_save_out => status_save,
|
||||
stat_rest_out => status_restore,
|
||||
pc_addr_out => int_pc_addr,
|
||||
pc_load_out => int_pc_load,
|
||||
stk_push_out => int_stk_push,
|
||||
stk_pop_out => int_stk_pop
|
||||
|
||||
);
|
||||
|
||||
inst_reg_ab: reg_dual
|
||||
GENERIC MAP (
|
||||
addr_width => REG_SIZE_BITS,
|
||||
data_width => DMEM_DATA_WIDTH
|
||||
)
|
||||
PORT MAP(
|
||||
clk => clk,
|
||||
we_a => ctrl.lines.reg_we,
|
||||
ptr_a => ctrl.reg_a_ptr,
|
||||
ptr_b => ctrl.reg_b_ptr,
|
||||
din_a => reg_din,
|
||||
dout_a => reg_a_dout,
|
||||
dout_b => reg_b_dout
|
||||
);
|
||||
|
||||
inst_chipram: chipram
|
||||
GENERIC MAP (
|
||||
addr_width => CHIPRAM_SIZE_BITS,
|
||||
data_width => IMEM_ADDR_WIDTH
|
||||
)
|
||||
PORT MAP(
|
||||
clka => clk,
|
||||
clkb => clk,
|
||||
en_a => cpu_active,
|
||||
en_b => cpu_active,
|
||||
we_a => stk_we,
|
||||
we_b => cmem_we,
|
||||
addr_a => stk_addr,
|
||||
addr_b => cmem_addr,
|
||||
din_a => stk_reg,
|
||||
din_b => cmem_din,
|
||||
dout_a => stk_out,
|
||||
dout_b => cmem_dout
|
||||
);
|
||||
|
||||
inst_chipreg: chipreg
|
||||
PORT MAP(
|
||||
rst => rst,
|
||||
clk => clk,
|
||||
we => creg_we,
|
||||
addr => mem_addr,
|
||||
din => mem_data,
|
||||
dout => creg_dout,
|
||||
ctrl_in => creg_ctrl_in,
|
||||
ctrl_out => creg_ctrl_out
|
||||
);
|
||||
|
||||
inst_alu: alu
|
||||
GENERIC MAP (
|
||||
data_width => DMEM_DATA_WIDTH
|
||||
)
|
||||
PORT MAP(
|
||||
rst => rst,
|
||||
clk => clk,
|
||||
op_en => ctrl.lines.alu_load,
|
||||
cy_in => ctrl.lines.alu_cy_in,
|
||||
op1_in => alu_op1,
|
||||
op2_in => alu_op2,
|
||||
opsel => ctrl.lines.alu_opsel,
|
||||
res_out => alu_result,
|
||||
stat_load => status_restore,
|
||||
stat_in => status_reg.alu,
|
||||
stat_out => alu_status
|
||||
);
|
||||
|
||||
end rtl;
|
||||
@@ -0,0 +1,904 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: Types, constants and functions for JCPU
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
|
||||
package cpu_pkg is
|
||||
|
||||
-- Revision of the CPU
|
||||
constant REVISION : integer := 4;
|
||||
|
||||
-- Chipram depth (valid values 9..floor(log2(BlockRamBytes)))
|
||||
constant CHIPRAM_SIZE_BITS : integer := 10;
|
||||
|
||||
-- Chipregister file depth
|
||||
constant CHIPREG_SIZE_BITS : integer := 8;
|
||||
|
||||
-- Number of registers (16 registers fixed)
|
||||
constant REG_SIZE_BITS : integer := 4;
|
||||
|
||||
-- Instruction memory
|
||||
constant IMEM_ADDR_WIDTH : integer := 12;
|
||||
|
||||
-- Data memory
|
||||
constant DMEM_DATA_WIDTH : integer := 8;
|
||||
constant DMEM_ADDR_WIDTH : integer := 8;
|
||||
|
||||
-- Instruction format
|
||||
constant INST_OPCODE_WIDTH : integer := 6;
|
||||
constant IMEM_DATA_WIDTH : integer := INST_OPCODE_WIDTH + DMEM_DATA_WIDTH + REG_SIZE_BITS;
|
||||
|
||||
-- Microcode ROM
|
||||
constant MUCODE_ADDR_WIDTH : integer := 10;
|
||||
|
||||
-- Stack depth (uses lower half of CHIPRAM)
|
||||
constant STACK_SIZE_BITS : integer := CHIPRAM_SIZE_BITS-1;
|
||||
|
||||
--Types
|
||||
subtype iphase_t is integer range 0 to 1;
|
||||
type mem_access_t is (cmem_access, xmem_access, cio_access, xio_access);
|
||||
type reg_src_t is (alu_src, stk_src, cmem_src, xmem_src);
|
||||
type alu_src_t is (reg_a, reg_b, const);
|
||||
type ddata_src_t is (reg_a, reg_b, const);
|
||||
type daddr_src_t is (reg_a, reg_b, const);
|
||||
subtype instr_name_t is string(1 to 12);
|
||||
type instr_name_array_t is array (0 to 63) of instr_name_t;
|
||||
subtype opcode_t is unsigned (INST_OPCODE_WIDTH-1 downto 0);
|
||||
subtype inst_data_t is unsigned (IMEM_ADDR_WIDTH-1 downto 0);
|
||||
subtype inst_addr_t is unsigned (IMEM_ADDR_WIDTH-1 downto 0);
|
||||
subtype inst_t is unsigned (IMEM_DATA_WIDTH-1 downto 0);
|
||||
subtype dmem_data_t is unsigned (DMEM_DATA_WIDTH-1 downto 0);
|
||||
subtype dmem_addr_t is unsigned (DMEM_DATA_WIDTH-1 downto 0);
|
||||
subtype reg_ptr_t is unsigned (3 downto 0);
|
||||
type dmem_array_t is array (natural range <>) of dmem_data_t;
|
||||
type instr_addr_array is array (integer range <>) of inst_addr_t;
|
||||
subtype page_sel_t is unsigned (CHIPRAM_SIZE_BITS-DMEM_DATA_WIDTH-2 downto 0);
|
||||
|
||||
type alu_op_t is
|
||||
(
|
||||
pass_op2,
|
||||
op1_add_op2,
|
||||
op1_sub_op2,
|
||||
op1_addc_op2,
|
||||
op1_subc_op2,
|
||||
op1_and_op2,
|
||||
op1_or_op2,
|
||||
op1_xor_op2,
|
||||
swap_op,
|
||||
shl_op,
|
||||
shr_op,
|
||||
rol_op,
|
||||
ror_op,
|
||||
rolc_op,
|
||||
rorc_op
|
||||
);
|
||||
|
||||
type alu_status_t is record
|
||||
zero : STD_LOGIC;
|
||||
carry : STD_LOGIC;
|
||||
end record;
|
||||
|
||||
type cpu_status_t is record
|
||||
alu : alu_status_t;
|
||||
xmem_wait : STD_LOGIC;
|
||||
end record;
|
||||
|
||||
type ctrl_lines_t is record
|
||||
reg_we : STD_LOGIC;
|
||||
reg_src_sel : reg_src_t;
|
||||
alu_op1_src_sel : alu_src_t;
|
||||
alu_op2_src_sel : alu_src_t;
|
||||
alu_opsel : alu_op_t;
|
||||
alu_load : STD_LOGIC;
|
||||
alu_cy_in : STD_LOGIC;
|
||||
ddata_src_sel : ddata_src_t;
|
||||
daddr_src_sel : daddr_src_t;
|
||||
pc_load : STD_LOGIC;
|
||||
pc_inc : STD_LOGIC;
|
||||
stk_push : STD_LOGIC;
|
||||
stk_pop : STD_LOGIC;
|
||||
stk_pushd : STD_LOGIC;
|
||||
stk_popd : STD_LOGIC;
|
||||
mem_access : mem_access_t;
|
||||
mem_read : STD_LOGIC;
|
||||
mem_write : STD_LOGIC;
|
||||
int_exit : STD_LOGIC;
|
||||
end record;
|
||||
|
||||
type dpath_ctrl_out_t is record
|
||||
lines : ctrl_lines_t;
|
||||
reg_a_ptr : reg_ptr_t;
|
||||
reg_b_ptr : reg_ptr_t;
|
||||
end record;
|
||||
|
||||
type int_ctrl_in_t is record
|
||||
enable : std_logic;
|
||||
polarity : std_logic;
|
||||
edge_sens : std_logic;
|
||||
request : std_logic;
|
||||
end record;
|
||||
|
||||
type creg_ctrl_out_t is record
|
||||
page_sel : page_sel_t;
|
||||
int_ctrl : int_ctrl_in_t;
|
||||
stk_high : unsigned(IMEM_ADDR_WIDTH-DMEM_ADDR_WIDTH-1 downto 0);
|
||||
cmem_high : unsigned(IMEM_ADDR_WIDTH-DMEM_ADDR_WIDTH-1 downto 0);
|
||||
end record;
|
||||
|
||||
type creg_ctrl_in_t is record
|
||||
alu : alu_status_t;
|
||||
end record;
|
||||
|
||||
|
||||
type murom_t is array (0 to integer(2**MUCODE_ADDR_WIDTH)-1) of ctrl_lines_t;
|
||||
|
||||
constant instr_name_array : instr_name_array_t :=
|
||||
(
|
||||
"NOP ", -- 00
|
||||
"HALT ", -- 01
|
||||
"MOV|R|R ", -- 02
|
||||
"MOV|R|K ", -- 03
|
||||
"MOVX|R|Ri ", -- 04
|
||||
"MOVX|R|Ki ", -- 05
|
||||
"MOVX|Ri|R ", -- 06
|
||||
"MOVX|Ri|K ", -- 07
|
||||
"MOVX|Ki|R ", -- 08
|
||||
"MOVC|R|Ri ", -- 09
|
||||
"MOVC|R|Ki ", -- 0A
|
||||
"MOVC|Ri|R ", -- 0B
|
||||
"MOVC|Ri|K ", -- 0C
|
||||
"MOVC|Ki|R ", -- 0D
|
||||
"CMP|R|R ", -- 0E
|
||||
"CMP|R|K ", -- 0F
|
||||
"ADD|R|R ", -- 10
|
||||
"ADD|R|K ", -- 11
|
||||
"ADDC|R|R ", -- 12
|
||||
"ADDC|R|K ", -- 13
|
||||
"SUB|R|R ", -- 14
|
||||
"SUB|R|K ", -- 15
|
||||
"SUBC|R|R ", -- 16
|
||||
"SUBC|R|K ", -- 17
|
||||
"AND|R|R ", -- 18
|
||||
"AND|R|K ", -- 19
|
||||
"OR|R|R ", -- 1A
|
||||
"OR|R|K ", -- 1B
|
||||
"XOR|R|R ", -- 1C
|
||||
"XOR|R|K ", -- 1D
|
||||
"SHL|R ", -- 1E
|
||||
"SHR|R ", -- 1F
|
||||
"ROL|R ", -- 20
|
||||
"ROR|R ", -- 21
|
||||
"ROLC|R ", -- 22
|
||||
"RORC|R ", -- 23
|
||||
"XOUT|Ki|R ", -- 24
|
||||
"XOUT|Ri|K ", -- 25
|
||||
"COUT|Ki|R ", -- 26
|
||||
"COUT|Ri|K ", -- 27
|
||||
"XIN|R|Ki ", -- 28
|
||||
"CIN|R|Ki ", -- 29
|
||||
"SWAP|R ", -- 2A
|
||||
"SETC ", -- 2B
|
||||
"UNDEF ", -- 2C
|
||||
"UNDEF ", -- 2D
|
||||
"SUB|K|R ", -- 2E
|
||||
"SUBC|K|R ", -- 2F
|
||||
"JMP|K ", -- 30
|
||||
"JZ|K ", -- 31
|
||||
"JNZ|K ", -- 32
|
||||
"JC|K ", -- 33
|
||||
"JNC|K ", -- 34
|
||||
"JLT|K ", -- 35
|
||||
"JGT|K ", -- 36
|
||||
"JLE|K ", -- 37
|
||||
"JGE|K ", -- 38
|
||||
"JEQ|K ", -- 39
|
||||
"JNE|K ", -- 3A
|
||||
"CALL|K ", -- 3B
|
||||
"PUSH|R ", -- 3C
|
||||
"POP|R ", -- 3D
|
||||
"RET ", -- 3E
|
||||
"RETI " -- 3F
|
||||
);
|
||||
-- Functions
|
||||
function Instr(opcode : opcode_t) return inst_t;
|
||||
function Instr(opcode : opcode_t; data : inst_data_t) return inst_t;
|
||||
function Instr(opcode : opcode_t; data : inst_data_t; reg : integer) return inst_t;
|
||||
function Instr(opcode : opcode_t; reg_a : integer) return inst_t;
|
||||
function Instr(opcode : opcode_t; reg_a, reg_b : integer) return inst_t;
|
||||
function Instr(opcode : opcode_t; reg_a, reg_b, reg_c : integer) return inst_t;
|
||||
function ctrl_lines_default return ctrl_lines_t;
|
||||
function idecoder(instr_name : instr_name_t; iphase : iphase_t; status : cpu_status_t) return ctrl_lines_t;
|
||||
function idecoder(opcode : opcode_t; iphase : iphase_t; status : cpu_status_t) return ctrl_lines_t;
|
||||
function gen_murom return murom_t;
|
||||
function get_muromaddr (opcode : opcode_t; iphase : iphase_t; status : cpu_status_t) return unsigned;
|
||||
function MIN (X, Y: INTEGER) return INTEGER;
|
||||
function MAX (X, Y: INTEGER) return INTEGER;
|
||||
|
||||
end cpu_pkg;
|
||||
|
||||
package body cpu_pkg is
|
||||
|
||||
function Instr(opcode : opcode_t) return inst_t is
|
||||
variable inst : inst_t := (others => '0');
|
||||
begin
|
||||
inst(inst_t'length-1 downto inst_t'length-opcode_t'length) := opcode;
|
||||
return inst;
|
||||
|
||||
end Instr;
|
||||
|
||||
function Instr(opcode : opcode_t; data : inst_data_t) return inst_t is
|
||||
variable inst : inst_t := (others => '0');
|
||||
begin
|
||||
inst(inst_t'length-1 downto inst_t'length-opcode_t'length) := opcode;
|
||||
inst(inst_t'length-opcode_t'length-1 downto inst_t'length-opcode_t'length-inst_addr_t'length) := data;
|
||||
return inst;
|
||||
|
||||
end Instr;
|
||||
|
||||
function Instr(opcode : opcode_t; data : inst_data_t; reg : integer) return inst_t is
|
||||
variable inst : inst_t := (others => '0');
|
||||
begin
|
||||
inst(inst_t'length-1 downto inst_t'length-opcode_t'length) := opcode;
|
||||
inst(inst_t'length-opcode_t'length-1 downto inst_t'length-opcode_t'length-inst_data_t'length) := data;
|
||||
inst(reg_ptr_t'length-1 downto 0) := reg_ptr_t(to_unsigned(reg, reg_ptr_t'length));
|
||||
|
||||
return inst;
|
||||
|
||||
end Instr;
|
||||
|
||||
function Instr(opcode : opcode_t; reg_a : integer) return inst_t is
|
||||
variable inst : inst_t := (others => '0');
|
||||
begin
|
||||
inst(inst_t'length-1 downto inst_t'length-opcode_t'length) := opcode;
|
||||
inst(reg_ptr_t'length-1 downto 0) := reg_ptr_t(to_unsigned(reg_a, reg_ptr_t'length));
|
||||
|
||||
return inst;
|
||||
|
||||
end Instr;
|
||||
|
||||
function Instr(opcode : opcode_t; reg_a, reg_b : integer) return inst_t is
|
||||
variable inst : inst_t := (others => '0');
|
||||
begin
|
||||
inst(inst_t'length-1 downto inst_t'length-opcode_t'length) := opcode;
|
||||
inst(2*(reg_ptr_t'length)-1 downto reg_ptr_t'length) := reg_ptr_t(to_unsigned(reg_b, reg_ptr_t'length));
|
||||
inst(reg_ptr_t'length-1 downto 0) := reg_ptr_t(to_unsigned(reg_a, reg_ptr_t'length));
|
||||
|
||||
return inst;
|
||||
|
||||
end Instr;
|
||||
|
||||
function Instr(opcode : opcode_t; reg_a, reg_b, reg_c : integer) return inst_t is
|
||||
variable inst : inst_t := (others => '0');
|
||||
begin
|
||||
inst(inst_t'length-1 downto inst_t'length-opcode_t'length) := opcode;
|
||||
inst(3*(reg_ptr_t'length)-1 downto 2*reg_ptr_t'length) := reg_ptr_t(to_unsigned(reg_c, reg_ptr_t'length));
|
||||
inst(2*(reg_ptr_t'length)-1 downto reg_ptr_t'length) := reg_ptr_t(to_unsigned(reg_b, reg_ptr_t'length));
|
||||
inst(reg_ptr_t'length-1 downto 0) := reg_ptr_t(to_unsigned(reg_a, reg_ptr_t'length));
|
||||
|
||||
return inst;
|
||||
|
||||
end Instr;
|
||||
|
||||
function ctrl_lines_default return ctrl_lines_t is
|
||||
variable result : ctrl_lines_t;
|
||||
begin
|
||||
result.pc_load := '0';
|
||||
result.pc_inc := '0';
|
||||
result.stk_push := '0';
|
||||
result.stk_pop := '0';
|
||||
result.stk_pushd := '0';
|
||||
result.stk_popd := '0';
|
||||
result.reg_we := '0';
|
||||
result.reg_src_sel := alu_src;
|
||||
result.ddata_src_sel := reg_a;
|
||||
result.daddr_src_sel := reg_b;
|
||||
result.alu_opsel := pass_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := reg_b;
|
||||
result.alu_load := '0';
|
||||
result.alu_cy_in := '0';
|
||||
result.mem_access := cmem_access;
|
||||
result.mem_read := '0';
|
||||
result.mem_write := '0';
|
||||
result.int_exit := '0';
|
||||
return result;
|
||||
|
||||
end ctrl_lines_default;
|
||||
|
||||
function idecoder(opcode : opcode_t; iphase : iphase_t; status : cpu_status_t) return ctrl_lines_t is
|
||||
variable instr_name : instr_name_t;
|
||||
begin
|
||||
instr_name := instr_name_array(to_integer(opcode));
|
||||
return idecoder(instr_name, iphase, status);
|
||||
end idecoder;
|
||||
|
||||
function idecoder(instr_name : instr_name_t; iphase : iphase_t; status : cpu_status_t) return ctrl_lines_t is
|
||||
variable result : ctrl_lines_t;
|
||||
variable ze, cy, xmem_wait : STD_LOGIC;
|
||||
|
||||
begin
|
||||
ze := status.alu.zero;
|
||||
cy := status.alu.carry;
|
||||
xmem_wait := status.xmem_wait;
|
||||
|
||||
result := ctrl_lines_default;
|
||||
if iphase = 0 then
|
||||
result.pc_inc := '1';
|
||||
end if;
|
||||
|
||||
case instr_name is
|
||||
|
||||
when "HALT " =>
|
||||
result.pc_inc := '0';
|
||||
when "SETC " => -- carry <= 1
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_opsel := pass_op2;
|
||||
result.alu_op2_src_sel := reg_b;
|
||||
result.alu_load := '1';
|
||||
result.alu_cy_in := '1';
|
||||
when "MOV|R|R " => -- R(a) <= R(b)
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_opsel := pass_op2;
|
||||
result.alu_op2_src_sel := reg_b;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "MOV|R|K " => -- R(a) <= #kk
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_opsel := pass_op2;
|
||||
result.alu_op2_src_sel := const;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "MOVC|Ri|R " => -- [R(b)] <= R(a)
|
||||
result.mem_access := cmem_access;
|
||||
result.daddr_src_sel := reg_b;
|
||||
result.ddata_src_sel := reg_a;
|
||||
if iphase = 0 then
|
||||
result.mem_write := '1';
|
||||
end if;
|
||||
when "MOVC|Ri|K " => -- [R(a)] <= kk
|
||||
result.mem_access := cmem_access;
|
||||
result.daddr_src_sel := reg_a;
|
||||
result.ddata_src_sel := const;
|
||||
if iphase = 0 then
|
||||
result.mem_write := '1';
|
||||
end if;
|
||||
when "COUT|Ri|K " => -- [R(a)] <= kk
|
||||
result.mem_access := cio_access;
|
||||
result.daddr_src_sel := reg_a;
|
||||
result.ddata_src_sel := const;
|
||||
if iphase = 0 then
|
||||
result.mem_write := '1';
|
||||
end if;
|
||||
when "MOVC|R|Ri " => -- R(a) <= [R(b)]
|
||||
result.mem_access := cmem_access;
|
||||
result.reg_src_sel := cmem_src;
|
||||
result.daddr_src_sel := reg_b;
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "MOVC|R|Ki " => -- R(a) <= [#addr]
|
||||
result.mem_access := cmem_access;
|
||||
result.reg_src_sel := cmem_src;
|
||||
result.daddr_src_sel := const;
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "CIN|R|Ki " => -- R(a) <= [#addr]
|
||||
result.mem_access := cio_access;
|
||||
result.reg_src_sel := cmem_src;
|
||||
result.daddr_src_sel := const;
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "MOVC|Ki|R " => -- [#addr] <= R(a)
|
||||
result.mem_access := cmem_access;
|
||||
result.daddr_src_sel := const;
|
||||
result.ddata_src_sel := reg_a;
|
||||
if iphase = 0 then
|
||||
result.mem_write := '1';
|
||||
end if;
|
||||
when "COUT|Ki|R " => -- [#addr] <= R(a)
|
||||
result.mem_access := cio_access;
|
||||
result.daddr_src_sel := const;
|
||||
result.ddata_src_sel := reg_a;
|
||||
if iphase = 0 then
|
||||
result.mem_write := '1';
|
||||
end if;
|
||||
when "MOVX|Ri|R " => -- [R(b)] <= R(a)
|
||||
result.mem_access := xmem_access;
|
||||
result.daddr_src_sel := reg_b;
|
||||
result.ddata_src_sel := reg_a;
|
||||
if iphase = 0 then
|
||||
result.mem_write := '1';
|
||||
end if;
|
||||
if xmem_wait = '1' then
|
||||
result.mem_write := '1';
|
||||
result.pc_inc := '0';
|
||||
end if;
|
||||
when "MOVX|Ri|K " => -- [R(a)] <= kk
|
||||
result.mem_access := xmem_access;
|
||||
result.daddr_src_sel := reg_a;
|
||||
result.ddata_src_sel := const;
|
||||
if iphase = 0 then
|
||||
result.mem_write := '1';
|
||||
end if;
|
||||
if xmem_wait = '1' then
|
||||
result.mem_write := '1';
|
||||
result.pc_inc := '0';
|
||||
end if;
|
||||
when "XOUT|Ri|K " => -- [R(a)] <= kk
|
||||
result.mem_access := xio_access;
|
||||
result.daddr_src_sel := reg_a;
|
||||
result.ddata_src_sel := const;
|
||||
if iphase = 0 then
|
||||
result.mem_write := '1';
|
||||
end if;
|
||||
if xmem_wait = '1' then
|
||||
result.pc_inc := '0';
|
||||
result.mem_write := '1';
|
||||
end if;
|
||||
when "MOVX|R|Ri " => -- R(a) <= [R(b)]
|
||||
result.mem_access := xmem_access;
|
||||
result.reg_src_sel := xmem_src;
|
||||
result.daddr_src_sel := reg_b;
|
||||
if iphase = 0 then
|
||||
result.mem_read := '1';
|
||||
end if;
|
||||
if xmem_wait = '0' then
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
else
|
||||
result.pc_inc := '0';
|
||||
result.mem_read := '1';
|
||||
end if;
|
||||
when "MOVX|R|Ki " => -- R(a) <= [#addr]
|
||||
result.mem_access := xmem_access;
|
||||
result.reg_src_sel := xmem_src;
|
||||
result.daddr_src_sel := const;
|
||||
if iphase = 0 then
|
||||
result.mem_read := '1';
|
||||
end if;
|
||||
if xmem_wait = '0' then
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
else
|
||||
result.pc_inc := '0';
|
||||
result.mem_read := '1';
|
||||
end if;
|
||||
when "XIN|R|Ki " => -- R(a) <= [#addr]
|
||||
result.mem_access := xio_access;
|
||||
result.reg_src_sel := xmem_src;
|
||||
result.daddr_src_sel := const;
|
||||
if iphase = 0 then
|
||||
result.mem_read := '1';
|
||||
end if;
|
||||
if xmem_wait = '0' then
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
else
|
||||
result.pc_inc := '0';
|
||||
result.mem_read := '1';
|
||||
end if;
|
||||
when "MOVX|Ki|R " => -- [#addr] <= R(a)
|
||||
result.mem_access := xmem_access;
|
||||
result.daddr_src_sel := const;
|
||||
result.ddata_src_sel := reg_a;
|
||||
if iphase = 0 then
|
||||
result.mem_write := '1';
|
||||
end if;
|
||||
if xmem_wait = '1' then
|
||||
result.pc_inc := '0';
|
||||
result.mem_write := '1';
|
||||
end if;
|
||||
when "XOUT|Ki|R " => -- [#addr] <= R(a)
|
||||
result.mem_access := xio_access;
|
||||
result.daddr_src_sel := const;
|
||||
result.ddata_src_sel := reg_a;
|
||||
if iphase = 0 then
|
||||
result.mem_write := '1';
|
||||
end if;
|
||||
if xmem_wait = '1' then
|
||||
result.pc_inc := '0';
|
||||
result.mem_write := '1';
|
||||
end if;
|
||||
when "ADD|R|R " => -- R(a) <= R(a) + R(b)
|
||||
result.alu_opsel := op1_add_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := reg_b;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "ADD|R|K " => -- R(a) <= R(a) + k
|
||||
result.alu_opsel := op1_add_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := const;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "ADDC|R|R " => -- R(a) <= R(a) + R(b)
|
||||
result.alu_opsel := op1_addc_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := reg_b;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "ADDC|R|K " => -- R(a) <= R(a) + k
|
||||
result.alu_opsel := op1_addc_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := const;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "SUB|R|R " => -- R(a) <= R(a) + R(b)
|
||||
result.alu_opsel := op1_sub_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := reg_b;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "SUB|R|K " => -- R(a) <= R(a) + k
|
||||
result.alu_opsel := op1_sub_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := const;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "SUB|K|R " => -- R(a) <= k - R(a)
|
||||
result.alu_opsel := op1_sub_op2;
|
||||
result.alu_op1_src_sel := const;
|
||||
result.alu_op2_src_sel := reg_a;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "SUBC|R|R " => -- R(a) <= R(a) + R(b)
|
||||
result.alu_opsel := op1_subc_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := reg_b;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "SUBC|R|K " => -- R(a) <= R(a) + k
|
||||
result.alu_opsel := op1_subc_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := const;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "SUBC|K|R " => -- R(a) <= K - R(a)
|
||||
result.alu_opsel := op1_subc_op2;
|
||||
result.alu_op1_src_sel := const;
|
||||
result.alu_op2_src_sel := reg_a;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "AND|R|R " => -- R(a) <= R(a) and R(b)
|
||||
result.alu_opsel := op1_and_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := reg_b;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "AND|R|K " => -- R(a) <= R(a) and k
|
||||
result.alu_opsel := op1_and_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := const;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "OR|R|R " => -- R(a) <= R(a) or R(b)
|
||||
result.alu_opsel := op1_or_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := reg_b;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "OR|R|K " => -- R(a) <= R(a) or R(b)
|
||||
result.alu_opsel := op1_or_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := const;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "XOR|R|R " => -- R(a) <= R(a) xor R(b)
|
||||
result.alu_opsel := op1_xor_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := reg_b;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "XOR|R|K " => -- R(a) <= R(a) xor R(b)
|
||||
result.alu_opsel := op1_xor_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := const;
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "SWAP|R " => -- R(a) <= R(b)
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_opsel := swap_op;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "SHL|R " => -- R(a) <= R(a) xor R(b)
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_opsel := shl_op;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "SHR|R " => -- R(a) <= R(a) xor R(b)
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_opsel := shr_op;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "ROL|R " => -- R(a) <= R(a) xor R(b)
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_opsel := rol_op;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "ROR|R " => -- R(a) <= R(a) xor R(b)
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_opsel := ror_op;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "ROLC|R " => -- R(a) <= R(a) xor R(b)
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_opsel := rolc_op;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "RORC|R " => -- R(a) <= R(a) xor R(b)
|
||||
result.reg_src_sel := alu_src;
|
||||
result.alu_opsel := rorc_op;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_load := '1';
|
||||
if iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "CMP|R|R " => --
|
||||
result.alu_opsel := op1_sub_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := reg_b;
|
||||
result.alu_load := '1';
|
||||
when "CMP|R|K " => --
|
||||
result.alu_opsel := op1_sub_op2;
|
||||
result.alu_op1_src_sel := reg_a;
|
||||
result.alu_op2_src_sel := const;
|
||||
result.alu_load := '1';
|
||||
when "JMP|K " => -- PC <= #addr
|
||||
if iphase = 0 then
|
||||
result.pc_load := '1';
|
||||
end if;
|
||||
when "JZ|K " => -- PC <= #addr, zero
|
||||
if iphase = 0 then
|
||||
if ze = '1' then
|
||||
result.pc_load := '1';
|
||||
end if;
|
||||
end if;
|
||||
when "JNZ|K " => -- PC <= #addr, !zero
|
||||
if iphase = 0 then
|
||||
if ze = '0' then
|
||||
result.pc_load := '1';
|
||||
end if;
|
||||
end if;
|
||||
when "JC|K " => -- PC <= #addr, carry
|
||||
if iphase = 0 then
|
||||
if cy = '1' then
|
||||
result.pc_load := '1';
|
||||
end if;
|
||||
end if;
|
||||
when "JNC|K " => -- PC <= #addr, !carry
|
||||
if iphase = 0 then
|
||||
if cy = '0' then
|
||||
result.pc_load := '1';
|
||||
end if;
|
||||
end if;
|
||||
when "JLT|K " => -- PC <= #addr, !carry
|
||||
if iphase = 0 then
|
||||
if cy = '1' then
|
||||
result.pc_load := '1';
|
||||
end if;
|
||||
end if;
|
||||
when "JGT|K " => --
|
||||
if iphase = 0 then
|
||||
if (cy or ze) = '0' then
|
||||
result.pc_load := '1';
|
||||
end if;
|
||||
end if;
|
||||
when "JLE|K " => --
|
||||
if iphase = 0 then
|
||||
if (cy xor ze) = '1' then
|
||||
result.pc_load := '1';
|
||||
end if;
|
||||
end if;
|
||||
when "JGE|K " => --
|
||||
if iphase = 0 then
|
||||
if (not cy or ze) = '1' then
|
||||
result.pc_load := '1';
|
||||
end if;
|
||||
end if;
|
||||
when "JEQ|K " => --
|
||||
if iphase = 0 then
|
||||
if ze = '1' then
|
||||
result.pc_load := '1';
|
||||
end if;
|
||||
end if;
|
||||
when "JNE|K " => --
|
||||
if iphase = 0 then
|
||||
if ze = '0' then
|
||||
result.pc_load := '1';
|
||||
end if;
|
||||
end if;
|
||||
when "PUSH|R " => -- push
|
||||
if iphase = 0 then
|
||||
result.stk_pushd := '1';
|
||||
end if;
|
||||
when "POP|R " => -- pop
|
||||
result.reg_src_sel := stk_src;
|
||||
if iphase = 0 then
|
||||
result.stk_popd := '1';
|
||||
elsif iphase = 1 then
|
||||
result.reg_we := '1';
|
||||
end if;
|
||||
when "CALL|K " => -- call
|
||||
if iphase = 0 then
|
||||
result.pc_load := '1';
|
||||
result.stk_push := '1';
|
||||
end if;
|
||||
when "RET " => -- return
|
||||
if iphase = 0 then
|
||||
result.pc_load := '1';
|
||||
result.stk_pop := '1';
|
||||
end if;
|
||||
when "RETI " => -- return
|
||||
result.pc_inc := '0';
|
||||
result.int_exit := '1';
|
||||
|
||||
when others => null; -- nop
|
||||
end case;
|
||||
|
||||
return result;
|
||||
|
||||
end idecoder;
|
||||
|
||||
function gen_murom return murom_t is
|
||||
variable result : murom_t;
|
||||
variable opcode : opcode_t;
|
||||
variable iphase : iphase_t;
|
||||
variable addr : unsigned(MUCODE_ADDR_WIDTH-1 downto 0);
|
||||
variable status : cpu_status_t;
|
||||
variable pos : integer := 0;
|
||||
|
||||
begin
|
||||
for i in 0 to 2**addr'length-1 loop
|
||||
addr := to_unsigned(i, addr'length);
|
||||
opcode := addr(opcode'length-1 downto 0);
|
||||
pos := opcode'length;
|
||||
iphase := 0;
|
||||
if addr(pos) = '1' then
|
||||
iphase := 1;
|
||||
end if;
|
||||
pos := pos + 1;
|
||||
status.alu.zero := addr(pos);
|
||||
pos := pos + 1;
|
||||
status.alu.carry := addr(pos);
|
||||
pos := pos + 1;
|
||||
status.xmem_wait := addr(pos);
|
||||
|
||||
result(i) := idecoder(opcode, iphase, status);
|
||||
end loop;
|
||||
|
||||
return result;
|
||||
end gen_murom;
|
||||
|
||||
function get_muromaddr (opcode : opcode_t; iphase : iphase_t; status : cpu_status_t) return unsigned is
|
||||
variable addr : unsigned(MUCODE_ADDR_WIDTH-1 downto 0);
|
||||
begin
|
||||
addr := status.xmem_wait & status.alu.carry & status.alu.zero & to_unsigned(iphase, 1) & opcode;
|
||||
return addr;
|
||||
|
||||
end get_muromaddr;
|
||||
|
||||
-------------------------------------------------------------
|
||||
function MIN (X, Y: INTEGER) return INTEGER is
|
||||
variable res : integer := X;
|
||||
begin
|
||||
if Y < X then
|
||||
res := Y;
|
||||
end if;
|
||||
|
||||
return res;
|
||||
|
||||
end MIN;
|
||||
|
||||
-------------------------------------------------------------
|
||||
function MAX (X, Y: INTEGER) return INTEGER is
|
||||
variable res : integer := X;
|
||||
begin
|
||||
if Y > X then
|
||||
res := Y;
|
||||
end if;
|
||||
|
||||
return res;
|
||||
|
||||
end MAX;
|
||||
|
||||
|
||||
end cpu_pkg;
|
||||
|
||||
@@ -0,0 +1,87 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The datapath controller
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
entity dpath_ctrl is
|
||||
Generic (
|
||||
use_rom : boolean := true
|
||||
);
|
||||
Port (
|
||||
inst_in : in inst_t;
|
||||
iphase_in : in iphase_t;
|
||||
status_in : in cpu_status_t;
|
||||
ctrl_out : out dpath_ctrl_out_t;
|
||||
idout : out inst_addr_t;
|
||||
ddout : out dmem_data_t
|
||||
);
|
||||
end dpath_ctrl;
|
||||
|
||||
architecture Behavioral of dpath_ctrl is
|
||||
|
||||
signal opcode : opcode_t;
|
||||
signal ctrl_lines : ctrl_lines_t;
|
||||
signal dbg_iname : instr_name_t;
|
||||
|
||||
begin
|
||||
|
||||
idout <= inst_in(IMEM_ADDR_WIDTH-1 downto 0);
|
||||
ddout <= inst_in(REG_SIZE_BITS+DMEM_DATA_WIDTH-1 downto REG_SIZE_BITS);
|
||||
opcode <= inst_in(IMEM_DATA_WIDTH-1 downto IMEM_DATA_WIDTH-INST_OPCODE_WIDTH);
|
||||
|
||||
ctrl_out.reg_a_ptr <= inst_in(reg_ptr_t'length-1 downto 0);
|
||||
ctrl_out.reg_b_ptr <= inst_in(2*(reg_ptr_t'length)-1 downto reg_ptr_t'length);
|
||||
ctrl_out.lines <= ctrl_lines;
|
||||
|
||||
-- pragma translate_off
|
||||
dbg_iname <= instr_name_array(to_integer(opcode));
|
||||
-- pragma translate_on
|
||||
|
||||
gen_ctrl_rom:
|
||||
if use_rom = true generate
|
||||
|
||||
i_dec:
|
||||
process(opcode, iphase_in, status_in)
|
||||
constant rom_data : murom_t := gen_murom;
|
||||
variable addr : unsigned(MUCODE_ADDR_WIDTH-1 downto 0);
|
||||
begin
|
||||
addr := get_muromaddr(opcode, iphase_in, status_in);
|
||||
ctrl_lines <= rom_data(to_integer(addr));
|
||||
end process;
|
||||
end generate;
|
||||
|
||||
gen_ctrl:
|
||||
if use_rom = false generate
|
||||
i_dec:
|
||||
process (opcode, iphase_in, status_in)
|
||||
begin
|
||||
ctrl_lines <= idecoder(opcode, iphase_in, status_in);
|
||||
end process;
|
||||
end generate;
|
||||
|
||||
end Behavioral;
|
||||
|
||||
@@ -0,0 +1,177 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: Interrupt controller
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
entity int_ctrl is
|
||||
Port (
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
ctrl_in : in int_ctrl_in_t;
|
||||
int_in : in STD_LOGIC;
|
||||
int_exit : in STD_LOGIC;
|
||||
iphase_in : in iphase_t;
|
||||
pc_addr_out : out inst_addr_t;
|
||||
int_ack_out : out STD_LOGIC;
|
||||
stat_save_out : out STD_LOGIC;
|
||||
stat_rest_out : out STD_LOGIC;
|
||||
pc_load_out : out STD_LOGIC;
|
||||
stk_push_out : out STD_LOGIC;
|
||||
stk_pop_out : out STD_LOGIC
|
||||
);
|
||||
end int_ctrl;
|
||||
|
||||
architecture Behavioral of int_ctrl is
|
||||
|
||||
type int_state_t is (int_idle, int_inject, int_active, int_release);
|
||||
type pin_state_t is (pin_s0, pin_s1, pin_s2);
|
||||
|
||||
signal int_state, int_state_next : int_state_t;
|
||||
signal pin_state, pin_state_next : pin_state_t;
|
||||
signal pc_load, int_ack, stk_push, stk_pop : STD_LOGIC;
|
||||
signal int_request : std_logic;
|
||||
signal int_sampled : std_logic;
|
||||
|
||||
begin
|
||||
|
||||
int_ack_out <= int_ack;
|
||||
pc_load_out <= pc_load;
|
||||
stk_push_out <= stk_push;
|
||||
stk_pop_out <= stk_pop;
|
||||
|
||||
-----------------------------------------------------------------------
|
||||
irg_ctrl_fsm:
|
||||
process (int_state, iphase_in, int_request, int_exit)
|
||||
begin
|
||||
|
||||
pc_addr_out <= to_unsigned(1, inst_addr_t'length);
|
||||
int_state_next <= int_state;
|
||||
int_ack <= '0';
|
||||
pc_load <= '0';
|
||||
stk_push <= '0';
|
||||
stk_pop <= '0';
|
||||
|
||||
case int_state is
|
||||
|
||||
when int_idle =>
|
||||
if int_request = '1' and iphase_in = 1 then
|
||||
int_state_next <= int_inject;
|
||||
end if;
|
||||
when int_inject =>
|
||||
if iphase_in = 0 then
|
||||
int_ack <= '1';
|
||||
pc_load <= '1';
|
||||
elsif iphase_in = 1 then
|
||||
stk_push <= '1';
|
||||
int_state_next <= int_active;
|
||||
end if;
|
||||
when int_active =>
|
||||
if int_exit = '1' and iphase_in = 1 then
|
||||
int_state_next <= int_release;
|
||||
end if;
|
||||
when int_release =>
|
||||
if iphase_in = 0 then
|
||||
stk_pop <= '1';
|
||||
pc_load <= '1';
|
||||
elsif iphase_in = 1 then
|
||||
int_state_next <= int_idle;
|
||||
end if;
|
||||
when others =>
|
||||
int_state_next <= int_idle;
|
||||
end case;
|
||||
|
||||
end process;
|
||||
|
||||
irq_ctrl_states:
|
||||
process (rst, clk, int_state_next)
|
||||
begin
|
||||
if rst = '1' then
|
||||
int_state <= int_idle;
|
||||
elsif rising_edge(clk) then
|
||||
int_state <= int_state_next;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
-----------------------------------------------------------------------
|
||||
pin_sample:
|
||||
process (clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
int_sampled <= int_in xor (not ctrl_in.polarity);
|
||||
end if;
|
||||
end process;
|
||||
|
||||
-----------------------------------------------------------------------
|
||||
pin_fsm:
|
||||
process (pin_state, int_sampled, int_ack, ctrl_in)
|
||||
begin
|
||||
int_request <= '0';
|
||||
pin_state_next <= pin_state;
|
||||
case pin_state is
|
||||
when pin_s0 =>
|
||||
if int_sampled = '1' or ctrl_in.request = '1' then
|
||||
if ctrl_in.enable = '1' then
|
||||
pin_state_next <= pin_s1;
|
||||
end if;
|
||||
end if;
|
||||
when pin_s1 =>
|
||||
int_request <= '1';
|
||||
if int_ack = '1' then
|
||||
pin_state_next <= pin_s2;
|
||||
end if;
|
||||
when pin_s2 =>
|
||||
if ctrl_in.edge_sens = '0' then
|
||||
pin_state_next <= pin_s0;
|
||||
elsif int_sampled = '0' then
|
||||
pin_state_next <= pin_s0;
|
||||
end if;
|
||||
when others =>
|
||||
pin_state_next <= pin_s0;
|
||||
end case;
|
||||
end process;
|
||||
|
||||
pin_states:
|
||||
process (rst, clk, pin_state_next)
|
||||
begin
|
||||
if rst = '1' then
|
||||
pin_state <= pin_s0;
|
||||
elsif rising_edge(clk) then
|
||||
pin_state <= pin_state_next;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
-----------------------------------------------------------------------
|
||||
stat_save_restore:
|
||||
process (clk, stk_push, stk_pop)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
stat_save_out <= stk_push;
|
||||
stat_rest_out <= stk_pop;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end Behavioral;
|
||||
@@ -0,0 +1,70 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: Programm counter
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
entity pc is
|
||||
Port (
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
inc : in STD_LOGIC;
|
||||
load : in STD_LOGIC;
|
||||
pc_in : in inst_addr_t;
|
||||
pc_out : out inst_addr_t;
|
||||
pc_next : out inst_addr_t
|
||||
);
|
||||
end pc;
|
||||
|
||||
architecture Behavioral of pc is
|
||||
|
||||
begin
|
||||
|
||||
proc_pc:
|
||||
process(rst, clk, inc, load, pc_in)
|
||||
variable vpc, vpc_reg: inst_addr_t;
|
||||
begin
|
||||
if rst = '1' then
|
||||
vpc_reg := (others => '0');
|
||||
elsif rising_edge(clk) then
|
||||
if inc = '1' or load = '1' then
|
||||
vpc_reg := vpc;
|
||||
elsif inc = '0' then
|
||||
pc_next <= vpc;
|
||||
end if;
|
||||
end if;
|
||||
|
||||
if load = '1' then
|
||||
vpc := pc_in;
|
||||
else
|
||||
vpc := vpc_reg + 1;
|
||||
end if;
|
||||
pc_out <= vpc_reg;
|
||||
|
||||
end process;
|
||||
|
||||
end Behavioral;
|
||||
|
||||
@@ -0,0 +1,81 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: On-Chip work registers
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
entity reg_dual is
|
||||
Generic (
|
||||
addr_width : integer := 3;
|
||||
data_width : integer := 8
|
||||
);
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
we_a : in STD_LOGIC;
|
||||
ptr_a : in reg_ptr_t;
|
||||
ptr_b : in reg_ptr_t;
|
||||
din_a : in unsigned (data_width-1 downto 0);
|
||||
dout_a : out unsigned (data_width-1 downto 0);
|
||||
dout_b : out unsigned (data_width-1 downto 0)
|
||||
);
|
||||
end reg_dual;
|
||||
|
||||
architecture Behavioral of reg_dual is
|
||||
|
||||
constant depth : integer := 2**addr_width;
|
||||
type mem_t is array (0 to depth-1) of unsigned (data_width-1 downto 0);
|
||||
signal addr_a, addr_b : unsigned (addr_width-1 downto 0) := (others => '0');
|
||||
|
||||
signal mem : mem_t;
|
||||
begin
|
||||
|
||||
addr_a <= TO_01(ptr_a(addr_width-1 downto 0));
|
||||
addr_b <= TO_01(ptr_b(addr_width-1 downto 0));
|
||||
|
||||
reg_in_ab:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if we_a = '1' then
|
||||
mem(to_integer(addr_a)) <= din_a;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
reg_out_a:
|
||||
process(mem, addr_a)
|
||||
begin
|
||||
dout_a <= TO_01(mem(to_integer(addr_a)));
|
||||
end process;
|
||||
|
||||
reg_out_b:
|
||||
process(mem, addr_b)
|
||||
begin
|
||||
dout_b <= TO_01(mem(to_integer(addr_b)));
|
||||
end process;
|
||||
|
||||
end Behavioral;
|
||||
|
||||
@@ -0,0 +1,73 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The call/return/data stack
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
entity stack_ctrl is
|
||||
Generic (
|
||||
addr_width : integer := 3
|
||||
);
|
||||
Port (
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
push : in STD_LOGIC;
|
||||
pop : in STD_LOGIC;
|
||||
ptr_out : out unsigned (addr_width-1 downto 0);
|
||||
din : in inst_addr_t;
|
||||
dout : out inst_addr_t;
|
||||
mem_we : out STD_LOGIC
|
||||
);
|
||||
end stack_ctrl;
|
||||
|
||||
architecture Behavioral of stack_ctrl is
|
||||
|
||||
signal ptr : unsigned (addr_width-1 downto 0);
|
||||
|
||||
begin
|
||||
|
||||
ptr_out <= ptr;
|
||||
|
||||
stk_ptr:
|
||||
process(rst, clk, ptr, push, pop)
|
||||
begin
|
||||
if rst = '1' then
|
||||
ptr <= (others => '0');
|
||||
dout <= (others => '0');
|
||||
mem_we <= '0';
|
||||
elsif rising_edge(clk) then
|
||||
mem_we <= push;
|
||||
if push = '1' then
|
||||
ptr <= ptr + 1;
|
||||
dout <= din;
|
||||
elsif pop = '1' then
|
||||
ptr <= ptr - 1;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end Behavioral;
|
||||
|
||||
@@ -0,0 +1,109 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: cpu_embedded using cpu_core and rom
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
entity cpu_embedded is
|
||||
Port (
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
int_in : in STD_LOGIC;
|
||||
int_ack : out STD_LOGIC;
|
||||
xmem_wait : in STD_LOGIC;
|
||||
xmem_we : out STD_LOGIC;
|
||||
xmem_re : out STD_LOGIC;
|
||||
xmem_din : in unsigned (DMEM_DATA_WIDTH-1 downto 0);
|
||||
xmem_dout : out unsigned (DMEM_DATA_WIDTH-1 downto 0);
|
||||
xmem_addr : out unsigned (DMEM_ADDR_WIDTH-1 downto 0);
|
||||
io_sel : out STD_LOGIC
|
||||
);
|
||||
end cpu_embedded;
|
||||
|
||||
architecture rtl of cpu_embedded is
|
||||
|
||||
signal irom_data : unsigned (IMEM_DATA_WIDTH-1 downto 0);
|
||||
signal irom_addr : unsigned (IMEM_ADDR_WIDTH-1 downto 0);
|
||||
|
||||
COMPONENT cpu
|
||||
Port (
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
int_in : in STD_LOGIC;
|
||||
int_ack : out STD_LOGIC;
|
||||
xmem_wait : in STD_LOGIC;
|
||||
xmem_we : out STD_LOGIC;
|
||||
xmem_re : out STD_LOGIC;
|
||||
instr_din : in unsigned (IMEM_DATA_WIDTH-1 downto 0);
|
||||
instr_addr : out unsigned (IMEM_ADDR_WIDTH-1 downto 0);
|
||||
xmem_din : in unsigned (DMEM_DATA_WIDTH-1 downto 0);
|
||||
xmem_dout : out unsigned (DMEM_DATA_WIDTH-1 downto 0);
|
||||
xmem_addr : out unsigned (DMEM_DATA_WIDTH-1 downto 0);
|
||||
io_sel : out STD_LOGIC
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
|
||||
COMPONENT irom
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
addr : in inst_addr_t;
|
||||
dout : out inst_t
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
begin
|
||||
|
||||
inst_cpu: cpu
|
||||
PORT MAP(
|
||||
rst => rst,
|
||||
clk => clk,
|
||||
ce => ce,
|
||||
int_in => int_in,
|
||||
int_ack => int_ack,
|
||||
xmem_wait => xmem_wait,
|
||||
xmem_we => xmem_we,
|
||||
xmem_re => xmem_re,
|
||||
instr_din => irom_data,
|
||||
instr_addr => irom_addr,
|
||||
xmem_din => xmem_din,
|
||||
xmem_dout => xmem_dout,
|
||||
xmem_addr => xmem_addr,
|
||||
io_sel => io_sel
|
||||
);
|
||||
|
||||
inst_irom: irom
|
||||
PORT MAP(
|
||||
clk => clk,
|
||||
ce => ce,
|
||||
addr => irom_addr,
|
||||
dout => irom_data
|
||||
);
|
||||
|
||||
end rtl;
|
||||
@@ -0,0 +1,79 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The ROM file for use in your VHDL design
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
-- JASM_ROM_INSERT_HERE
|
||||
ENTITY irom IS
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
addr : in inst_addr_t;
|
||||
dout : out inst_t
|
||||
);
|
||||
END irom;
|
||||
|
||||
ARCHITECTURE dctest OF irom IS
|
||||
|
||||
type imem_rom_t is array (0 to 17) of inst_t;
|
||||
|
||||
-- Assembled from dctest.jsm
|
||||
constant imem_rom : imem_rom_t :=
|
||||
(
|
||||
"110000" & X"010", -- 0x000: JMP 0x010
|
||||
"110000" & X"011", -- 0x001: JMP 0x011
|
||||
"000000" & X"000", -- 0x002:
|
||||
"000000" & X"000", -- 0x003:
|
||||
"000000" & X"000", -- 0x004:
|
||||
"000000" & X"000", -- 0x005:
|
||||
"000000" & X"000", -- 0x006:
|
||||
"000000" & X"000", -- 0x007:
|
||||
"000000" & X"000", -- 0x008:
|
||||
"000000" & X"000", -- 0x009:
|
||||
"000000" & X"000", -- 0x00A:
|
||||
"000000" & X"000", -- 0x00B:
|
||||
"000000" & X"000", -- 0x00C:
|
||||
"000000" & X"000", -- 0x00D:
|
||||
"000000" & X"000", -- 0x00E:
|
||||
"000000" & X"000", -- 0x00F:
|
||||
"110000" & X"010", -- 0x010: JMP 0x010
|
||||
"111111" & X"000" -- 0x011: RETI
|
||||
);
|
||||
|
||||
begin
|
||||
|
||||
PROM_READ:
|
||||
process(clk, ce)
|
||||
begin
|
||||
if rising_edge(clk) and ce = '1' then
|
||||
dout <= imem_rom(to_integer(addr));
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end dctest;
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,317 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The ROM file for use in your VHDL design
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
-- JASM_ROM_INSERT_HERE
|
||||
ENTITY xrom IS
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
addr : in dmem_addr_t;
|
||||
dout : out dmem_data_t
|
||||
);
|
||||
END xrom;
|
||||
|
||||
ARCHITECTURE dctest OF xrom IS
|
||||
|
||||
type xmem_rom_t is array (0 to 255) of dmem_data_t;
|
||||
|
||||
-- Assembled from dctest.jsm
|
||||
constant xmem_rom : xmem_rom_t :=
|
||||
(
|
||||
X"00", -- 0x00
|
||||
X"00", -- 0x01
|
||||
X"00", -- 0x02
|
||||
X"00", -- 0x03
|
||||
X"01", -- 0x04
|
||||
X"12", -- 0x05
|
||||
X"41", -- 0x06
|
||||
X"00", -- 0x07
|
||||
X"00", -- 0x08
|
||||
X"00", -- 0x09
|
||||
X"00", -- 0x0A
|
||||
X"00", -- 0x0B
|
||||
X"00", -- 0x0C
|
||||
X"00", -- 0x0D
|
||||
X"00", -- 0x0E
|
||||
X"00", -- 0x0F
|
||||
X"00", -- 0x10
|
||||
X"00", -- 0x11
|
||||
X"00", -- 0x12
|
||||
X"00", -- 0x13
|
||||
X"00", -- 0x14
|
||||
X"00", -- 0x15
|
||||
X"00", -- 0x16
|
||||
X"48", -- 0x17
|
||||
X"61", -- 0x18
|
||||
X"6C", -- 0x19
|
||||
X"6C", -- 0x1A
|
||||
X"6F", -- 0x1B
|
||||
X"0D", -- 0x1C
|
||||
X"0A", -- 0x1D
|
||||
X"00", -- 0x1E
|
||||
X"4A", -- 0x1F
|
||||
X"65", -- 0x20
|
||||
X"6E", -- 0x21
|
||||
X"73", -- 0x22
|
||||
X"00", -- 0x23
|
||||
X"57", -- 0x24
|
||||
X"65", -- 0x25
|
||||
X"6C", -- 0x26
|
||||
X"63", -- 0x27
|
||||
X"6F", -- 0x28
|
||||
X"6D", -- 0x29
|
||||
X"65", -- 0x2A
|
||||
X"20", -- 0x2B
|
||||
X"74", -- 0x2C
|
||||
X"6F", -- 0x2D
|
||||
X"20", -- 0x2E
|
||||
X"4A", -- 0x2F
|
||||
X"41", -- 0x30
|
||||
X"53", -- 0x31
|
||||
X"4D", -- 0x32
|
||||
X"20", -- 0x33
|
||||
X"43", -- 0x34
|
||||
X"50", -- 0x35
|
||||
X"55", -- 0x36
|
||||
X"00", -- 0x37
|
||||
X"52", -- 0x38
|
||||
X"65", -- 0x39
|
||||
X"61", -- 0x3A
|
||||
X"64", -- 0x3B
|
||||
X"79", -- 0x3C
|
||||
X"00", -- 0x3D
|
||||
X"54", -- 0x3E
|
||||
X"65", -- 0x3F
|
||||
X"73", -- 0x40
|
||||
X"74", -- 0x41
|
||||
X"69", -- 0x42
|
||||
X"6E", -- 0x43
|
||||
X"67", -- 0x44
|
||||
X"00", -- 0x45
|
||||
X"50", -- 0x46
|
||||
X"61", -- 0x47
|
||||
X"73", -- 0x48
|
||||
X"73", -- 0x49
|
||||
X"65", -- 0x4A
|
||||
X"64", -- 0x4B
|
||||
X"00", -- 0x4C
|
||||
X"45", -- 0x4D
|
||||
X"72", -- 0x4E
|
||||
X"72", -- 0x4F
|
||||
X"6F", -- 0x50
|
||||
X"72", -- 0x51
|
||||
X"00", -- 0x52
|
||||
X"0D", -- 0x53
|
||||
X"0A", -- 0x54
|
||||
X"00", -- 0x55
|
||||
X"00", -- 0x56
|
||||
X"00", -- 0x57
|
||||
X"00", -- 0x58
|
||||
X"00", -- 0x59
|
||||
X"00", -- 0x5A
|
||||
X"00", -- 0x5B
|
||||
X"00", -- 0x5C
|
||||
X"00", -- 0x5D
|
||||
X"00", -- 0x5E
|
||||
X"00", -- 0x5F
|
||||
X"00", -- 0x60
|
||||
X"00", -- 0x61
|
||||
X"00", -- 0x62
|
||||
X"00", -- 0x63
|
||||
X"00", -- 0x64
|
||||
X"00", -- 0x65
|
||||
X"00", -- 0x66
|
||||
X"00", -- 0x67
|
||||
X"00", -- 0x68
|
||||
X"00", -- 0x69
|
||||
X"00", -- 0x6A
|
||||
X"00", -- 0x6B
|
||||
X"00", -- 0x6C
|
||||
X"00", -- 0x6D
|
||||
X"00", -- 0x6E
|
||||
X"00", -- 0x6F
|
||||
X"00", -- 0x70
|
||||
X"00", -- 0x71
|
||||
X"00", -- 0x72
|
||||
X"00", -- 0x73
|
||||
X"00", -- 0x74
|
||||
X"00", -- 0x75
|
||||
X"00", -- 0x76
|
||||
X"00", -- 0x77
|
||||
X"00", -- 0x78
|
||||
X"00", -- 0x79
|
||||
X"00", -- 0x7A
|
||||
X"00", -- 0x7B
|
||||
X"00", -- 0x7C
|
||||
X"00", -- 0x7D
|
||||
X"00", -- 0x7E
|
||||
X"00", -- 0x7F
|
||||
X"00", -- 0x80
|
||||
X"00", -- 0x81
|
||||
X"00", -- 0x82
|
||||
X"00", -- 0x83
|
||||
X"00", -- 0x84
|
||||
X"00", -- 0x85
|
||||
X"00", -- 0x86
|
||||
X"00", -- 0x87
|
||||
X"00", -- 0x88
|
||||
X"00", -- 0x89
|
||||
X"00", -- 0x8A
|
||||
X"00", -- 0x8B
|
||||
X"00", -- 0x8C
|
||||
X"00", -- 0x8D
|
||||
X"00", -- 0x8E
|
||||
X"00", -- 0x8F
|
||||
X"00", -- 0x90
|
||||
X"00", -- 0x91
|
||||
X"00", -- 0x92
|
||||
X"00", -- 0x93
|
||||
X"00", -- 0x94
|
||||
X"00", -- 0x95
|
||||
X"00", -- 0x96
|
||||
X"00", -- 0x97
|
||||
X"00", -- 0x98
|
||||
X"00", -- 0x99
|
||||
X"00", -- 0x9A
|
||||
X"00", -- 0x9B
|
||||
X"00", -- 0x9C
|
||||
X"00", -- 0x9D
|
||||
X"00", -- 0x9E
|
||||
X"00", -- 0x9F
|
||||
X"00", -- 0xA0
|
||||
X"00", -- 0xA1
|
||||
X"00", -- 0xA2
|
||||
X"00", -- 0xA3
|
||||
X"00", -- 0xA4
|
||||
X"00", -- 0xA5
|
||||
X"00", -- 0xA6
|
||||
X"00", -- 0xA7
|
||||
X"00", -- 0xA8
|
||||
X"00", -- 0xA9
|
||||
X"00", -- 0xAA
|
||||
X"00", -- 0xAB
|
||||
X"00", -- 0xAC
|
||||
X"00", -- 0xAD
|
||||
X"00", -- 0xAE
|
||||
X"00", -- 0xAF
|
||||
X"00", -- 0xB0
|
||||
X"00", -- 0xB1
|
||||
X"00", -- 0xB2
|
||||
X"00", -- 0xB3
|
||||
X"00", -- 0xB4
|
||||
X"00", -- 0xB5
|
||||
X"00", -- 0xB6
|
||||
X"00", -- 0xB7
|
||||
X"00", -- 0xB8
|
||||
X"00", -- 0xB9
|
||||
X"00", -- 0xBA
|
||||
X"00", -- 0xBB
|
||||
X"00", -- 0xBC
|
||||
X"00", -- 0xBD
|
||||
X"00", -- 0xBE
|
||||
X"00", -- 0xBF
|
||||
X"00", -- 0xC0
|
||||
X"00", -- 0xC1
|
||||
X"00", -- 0xC2
|
||||
X"00", -- 0xC3
|
||||
X"00", -- 0xC4
|
||||
X"00", -- 0xC5
|
||||
X"00", -- 0xC6
|
||||
X"00", -- 0xC7
|
||||
X"00", -- 0xC8
|
||||
X"00", -- 0xC9
|
||||
X"00", -- 0xCA
|
||||
X"00", -- 0xCB
|
||||
X"00", -- 0xCC
|
||||
X"00", -- 0xCD
|
||||
X"00", -- 0xCE
|
||||
X"00", -- 0xCF
|
||||
X"00", -- 0xD0
|
||||
X"00", -- 0xD1
|
||||
X"00", -- 0xD2
|
||||
X"00", -- 0xD3
|
||||
X"00", -- 0xD4
|
||||
X"00", -- 0xD5
|
||||
X"00", -- 0xD6
|
||||
X"00", -- 0xD7
|
||||
X"00", -- 0xD8
|
||||
X"00", -- 0xD9
|
||||
X"00", -- 0xDA
|
||||
X"00", -- 0xDB
|
||||
X"00", -- 0xDC
|
||||
X"00", -- 0xDD
|
||||
X"00", -- 0xDE
|
||||
X"00", -- 0xDF
|
||||
X"00", -- 0xE0
|
||||
X"00", -- 0xE1
|
||||
X"00", -- 0xE2
|
||||
X"00", -- 0xE3
|
||||
X"00", -- 0xE4
|
||||
X"00", -- 0xE5
|
||||
X"00", -- 0xE6
|
||||
X"00", -- 0xE7
|
||||
X"00", -- 0xE8
|
||||
X"00", -- 0xE9
|
||||
X"00", -- 0xEA
|
||||
X"00", -- 0xEB
|
||||
X"00", -- 0xEC
|
||||
X"00", -- 0xED
|
||||
X"00", -- 0xEE
|
||||
X"00", -- 0xEF
|
||||
X"00", -- 0xF0
|
||||
X"00", -- 0xF1
|
||||
X"00", -- 0xF2
|
||||
X"00", -- 0xF3
|
||||
X"00", -- 0xF4
|
||||
X"00", -- 0xF5
|
||||
X"00", -- 0xF6
|
||||
X"00", -- 0xF7
|
||||
X"00", -- 0xF8
|
||||
X"00", -- 0xF9
|
||||
X"00", -- 0xFA
|
||||
X"00", -- 0xFB
|
||||
X"00", -- 0xFC
|
||||
X"00", -- 0xFD
|
||||
X"00", -- 0xFE
|
||||
X"00" -- 0xFF
|
||||
);
|
||||
|
||||
begin
|
||||
|
||||
PROM_READ:
|
||||
process(clk, ce)
|
||||
begin
|
||||
if rising_edge(clk) and ce = '1' then
|
||||
dout <= xmem_rom(to_integer(addr));
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end dctest;
|
||||
|
||||
@@ -0,0 +1,413 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: loadable ROM
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library UNISIM;
|
||||
use UNISIM.VComponents.all;
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
ENTITY xrom IS
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
addr : in dmem_addr_t;
|
||||
dout : out dmem_data_t
|
||||
);
|
||||
|
||||
END xrom;
|
||||
|
||||
ARCHITECTURE loadable OF xrom IS
|
||||
|
||||
-- JASM_ROM_INSERT_HERE
|
||||
|
||||
-- Assembled from dctest.jsm
|
||||
type xmem_rom_t is array (0 to 255) of dmem_data_t;
|
||||
signal xmem_rom : xmem_rom_t :=
|
||||
(
|
||||
X"00", -- 0x00
|
||||
X"00", -- 0x01
|
||||
X"00", -- 0x02
|
||||
X"00", -- 0x03
|
||||
X"01", -- 0x04
|
||||
X"12", -- 0x05
|
||||
X"41", -- 0x06
|
||||
X"00", -- 0x07
|
||||
X"00", -- 0x08
|
||||
X"00", -- 0x09
|
||||
X"00", -- 0x0A
|
||||
X"00", -- 0x0B
|
||||
X"00", -- 0x0C
|
||||
X"00", -- 0x0D
|
||||
X"00", -- 0x0E
|
||||
X"00", -- 0x0F
|
||||
X"00", -- 0x10
|
||||
X"00", -- 0x11
|
||||
X"00", -- 0x12
|
||||
X"00", -- 0x13
|
||||
X"00", -- 0x14
|
||||
X"00", -- 0x15
|
||||
X"00", -- 0x16
|
||||
X"48", -- 0x17
|
||||
X"61", -- 0x18
|
||||
X"6C", -- 0x19
|
||||
X"6C", -- 0x1A
|
||||
X"6F", -- 0x1B
|
||||
X"0D", -- 0x1C
|
||||
X"0A", -- 0x1D
|
||||
X"00", -- 0x1E
|
||||
X"4A", -- 0x1F
|
||||
X"65", -- 0x20
|
||||
X"6E", -- 0x21
|
||||
X"73", -- 0x22
|
||||
X"00", -- 0x23
|
||||
X"57", -- 0x24
|
||||
X"65", -- 0x25
|
||||
X"6C", -- 0x26
|
||||
X"63", -- 0x27
|
||||
X"6F", -- 0x28
|
||||
X"6D", -- 0x29
|
||||
X"65", -- 0x2A
|
||||
X"20", -- 0x2B
|
||||
X"74", -- 0x2C
|
||||
X"6F", -- 0x2D
|
||||
X"20", -- 0x2E
|
||||
X"4A", -- 0x2F
|
||||
X"41", -- 0x30
|
||||
X"53", -- 0x31
|
||||
X"4D", -- 0x32
|
||||
X"20", -- 0x33
|
||||
X"43", -- 0x34
|
||||
X"50", -- 0x35
|
||||
X"55", -- 0x36
|
||||
X"00", -- 0x37
|
||||
X"52", -- 0x38
|
||||
X"65", -- 0x39
|
||||
X"61", -- 0x3A
|
||||
X"64", -- 0x3B
|
||||
X"79", -- 0x3C
|
||||
X"00", -- 0x3D
|
||||
X"54", -- 0x3E
|
||||
X"65", -- 0x3F
|
||||
X"73", -- 0x40
|
||||
X"74", -- 0x41
|
||||
X"69", -- 0x42
|
||||
X"6E", -- 0x43
|
||||
X"67", -- 0x44
|
||||
X"00", -- 0x45
|
||||
X"50", -- 0x46
|
||||
X"61", -- 0x47
|
||||
X"73", -- 0x48
|
||||
X"73", -- 0x49
|
||||
X"65", -- 0x4A
|
||||
X"64", -- 0x4B
|
||||
X"00", -- 0x4C
|
||||
X"45", -- 0x4D
|
||||
X"72", -- 0x4E
|
||||
X"72", -- 0x4F
|
||||
X"6F", -- 0x50
|
||||
X"72", -- 0x51
|
||||
X"00", -- 0x52
|
||||
X"0D", -- 0x53
|
||||
X"0A", -- 0x54
|
||||
X"00", -- 0x55
|
||||
X"00", -- 0x56
|
||||
X"00", -- 0x57
|
||||
X"00", -- 0x58
|
||||
X"00", -- 0x59
|
||||
X"00", -- 0x5A
|
||||
X"00", -- 0x5B
|
||||
X"00", -- 0x5C
|
||||
X"00", -- 0x5D
|
||||
X"00", -- 0x5E
|
||||
X"00", -- 0x5F
|
||||
X"00", -- 0x60
|
||||
X"00", -- 0x61
|
||||
X"00", -- 0x62
|
||||
X"00", -- 0x63
|
||||
X"00", -- 0x64
|
||||
X"00", -- 0x65
|
||||
X"00", -- 0x66
|
||||
X"00", -- 0x67
|
||||
X"00", -- 0x68
|
||||
X"00", -- 0x69
|
||||
X"00", -- 0x6A
|
||||
X"00", -- 0x6B
|
||||
X"00", -- 0x6C
|
||||
X"00", -- 0x6D
|
||||
X"00", -- 0x6E
|
||||
X"00", -- 0x6F
|
||||
X"00", -- 0x70
|
||||
X"00", -- 0x71
|
||||
X"00", -- 0x72
|
||||
X"00", -- 0x73
|
||||
X"00", -- 0x74
|
||||
X"00", -- 0x75
|
||||
X"00", -- 0x76
|
||||
X"00", -- 0x77
|
||||
X"00", -- 0x78
|
||||
X"00", -- 0x79
|
||||
X"00", -- 0x7A
|
||||
X"00", -- 0x7B
|
||||
X"00", -- 0x7C
|
||||
X"00", -- 0x7D
|
||||
X"00", -- 0x7E
|
||||
X"00", -- 0x7F
|
||||
X"00", -- 0x80
|
||||
X"00", -- 0x81
|
||||
X"00", -- 0x82
|
||||
X"00", -- 0x83
|
||||
X"00", -- 0x84
|
||||
X"00", -- 0x85
|
||||
X"00", -- 0x86
|
||||
X"00", -- 0x87
|
||||
X"00", -- 0x88
|
||||
X"00", -- 0x89
|
||||
X"00", -- 0x8A
|
||||
X"00", -- 0x8B
|
||||
X"00", -- 0x8C
|
||||
X"00", -- 0x8D
|
||||
X"00", -- 0x8E
|
||||
X"00", -- 0x8F
|
||||
X"00", -- 0x90
|
||||
X"00", -- 0x91
|
||||
X"00", -- 0x92
|
||||
X"00", -- 0x93
|
||||
X"00", -- 0x94
|
||||
X"00", -- 0x95
|
||||
X"00", -- 0x96
|
||||
X"00", -- 0x97
|
||||
X"00", -- 0x98
|
||||
X"00", -- 0x99
|
||||
X"00", -- 0x9A
|
||||
X"00", -- 0x9B
|
||||
X"00", -- 0x9C
|
||||
X"00", -- 0x9D
|
||||
X"00", -- 0x9E
|
||||
X"00", -- 0x9F
|
||||
X"00", -- 0xA0
|
||||
X"00", -- 0xA1
|
||||
X"00", -- 0xA2
|
||||
X"00", -- 0xA3
|
||||
X"00", -- 0xA4
|
||||
X"00", -- 0xA5
|
||||
X"00", -- 0xA6
|
||||
X"00", -- 0xA7
|
||||
X"00", -- 0xA8
|
||||
X"00", -- 0xA9
|
||||
X"00", -- 0xAA
|
||||
X"00", -- 0xAB
|
||||
X"00", -- 0xAC
|
||||
X"00", -- 0xAD
|
||||
X"00", -- 0xAE
|
||||
X"00", -- 0xAF
|
||||
X"00", -- 0xB0
|
||||
X"00", -- 0xB1
|
||||
X"00", -- 0xB2
|
||||
X"00", -- 0xB3
|
||||
X"00", -- 0xB4
|
||||
X"00", -- 0xB5
|
||||
X"00", -- 0xB6
|
||||
X"00", -- 0xB7
|
||||
X"00", -- 0xB8
|
||||
X"00", -- 0xB9
|
||||
X"00", -- 0xBA
|
||||
X"00", -- 0xBB
|
||||
X"00", -- 0xBC
|
||||
X"00", -- 0xBD
|
||||
X"00", -- 0xBE
|
||||
X"00", -- 0xBF
|
||||
X"00", -- 0xC0
|
||||
X"00", -- 0xC1
|
||||
X"00", -- 0xC2
|
||||
X"00", -- 0xC3
|
||||
X"00", -- 0xC4
|
||||
X"00", -- 0xC5
|
||||
X"00", -- 0xC6
|
||||
X"00", -- 0xC7
|
||||
X"00", -- 0xC8
|
||||
X"00", -- 0xC9
|
||||
X"00", -- 0xCA
|
||||
X"00", -- 0xCB
|
||||
X"00", -- 0xCC
|
||||
X"00", -- 0xCD
|
||||
X"00", -- 0xCE
|
||||
X"00", -- 0xCF
|
||||
X"00", -- 0xD0
|
||||
X"00", -- 0xD1
|
||||
X"00", -- 0xD2
|
||||
X"00", -- 0xD3
|
||||
X"00", -- 0xD4
|
||||
X"00", -- 0xD5
|
||||
X"00", -- 0xD6
|
||||
X"00", -- 0xD7
|
||||
X"00", -- 0xD8
|
||||
X"00", -- 0xD9
|
||||
X"00", -- 0xDA
|
||||
X"00", -- 0xDB
|
||||
X"00", -- 0xDC
|
||||
X"00", -- 0xDD
|
||||
X"00", -- 0xDE
|
||||
X"00", -- 0xDF
|
||||
X"00", -- 0xE0
|
||||
X"00", -- 0xE1
|
||||
X"00", -- 0xE2
|
||||
X"00", -- 0xE3
|
||||
X"00", -- 0xE4
|
||||
X"00", -- 0xE5
|
||||
X"00", -- 0xE6
|
||||
X"00", -- 0xE7
|
||||
X"00", -- 0xE8
|
||||
X"00", -- 0xE9
|
||||
X"00", -- 0xEA
|
||||
X"00", -- 0xEB
|
||||
X"00", -- 0xEC
|
||||
X"00", -- 0xED
|
||||
X"00", -- 0xEE
|
||||
X"00", -- 0xEF
|
||||
X"00", -- 0xF0
|
||||
X"00", -- 0xF1
|
||||
X"00", -- 0xF2
|
||||
X"00", -- 0xF3
|
||||
X"00", -- 0xF4
|
||||
X"00", -- 0xF5
|
||||
X"00", -- 0xF6
|
||||
X"00", -- 0xF7
|
||||
X"00", -- 0xF8
|
||||
X"00", -- 0xF9
|
||||
X"00", -- 0xFA
|
||||
X"00", -- 0xFB
|
||||
X"00", -- 0xFC
|
||||
X"00", -- 0xFD
|
||||
X"00", -- 0xFE
|
||||
X"00" -- 0xFF
|
||||
);
|
||||
|
||||
signal jtag_ld_clk : STD_LOGIC;
|
||||
signal jtag_ld_we : STD_LOGIC;
|
||||
signal jtag_ld_addr : dmem_addr_t;
|
||||
signal jtag_ld_dout : dmem_data_t;
|
||||
signal jtag_ld_din : dmem_data_t;
|
||||
signal bs_rst, bs_sel, bs_shift, bs_tdi, bs_tdo : std_logic;
|
||||
signal bs_capture, bs_clk0, bs_clk1, bs_update0, bs_update1 : std_logic;
|
||||
signal user_regi, user_rego : unsigned (15 downto 0);
|
||||
constant id : unsigned (15 downto 0) := X"BEEF";
|
||||
|
||||
begin
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- Virtex-4: JTAG Loader
|
||||
--------------------------------------------------------------------------
|
||||
i00_BUFG : BUFG
|
||||
port map
|
||||
(
|
||||
O => bs_clk1,
|
||||
I => bs_clk0
|
||||
);
|
||||
|
||||
i01_BUFG : BUFG
|
||||
port map
|
||||
(
|
||||
O => bs_update1,
|
||||
I => bs_update0
|
||||
);
|
||||
|
||||
BSCAN_VIRTEX4_inst2 : BSCAN_VIRTEX4
|
||||
generic map
|
||||
(
|
||||
JTAG_CHAIN => 2 -- Value to set BSCAN site of device. Possible values: (1,2,3 or 4)
|
||||
)
|
||||
port map
|
||||
(
|
||||
CAPTURE => bs_capture, -- CAPTURE output from TAP controller
|
||||
DRCK => bs_clk0, -- Data register output for USER functions
|
||||
RESET => bs_rst, -- Reset output from TAP controller
|
||||
SEL => bs_sel, -- USER active output
|
||||
SHIFT => bs_shift, -- SHIFT output from TAP controller
|
||||
TDI => bs_tdi, -- TDI output from TAP controller
|
||||
UPDATE => bs_update0, -- UPDATE output from TAP controller
|
||||
TDO => bs_tdo -- Data input for USER function
|
||||
);
|
||||
|
||||
jtag_ld_addr <= user_regi(user_regi'left downto user_regi'left-dmem_data_t'length+1);
|
||||
jtag_ld_din <= user_regi(dmem_data_t'left downto 0);
|
||||
jtag_ld_clk <= bs_update1;
|
||||
jtag_ld_we <= bs_sel;
|
||||
|
||||
sipo:
|
||||
process (bs_rst, bs_clk1, bs_tdi, bs_shift)
|
||||
begin
|
||||
if bs_rst = '1' then
|
||||
user_regi <= (others => '0');
|
||||
elsif rising_edge(bs_clk1) then
|
||||
if bs_shift = '1' then
|
||||
user_regi <= bs_tdi & user_regi(user_regi'left downto 1);
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
piso:
|
||||
process (bs_rst, bs_clk1, bs_shift, user_rego)
|
||||
begin
|
||||
bs_tdo <= user_rego(0);
|
||||
if bs_rst = '1' then
|
||||
user_rego <= (others => '0');
|
||||
elsif rising_edge(bs_clk1) then
|
||||
if bs_shift = '1' then
|
||||
user_rego <= user_rego(0) & user_rego(user_rego'left downto 1);
|
||||
else
|
||||
user_rego <= (user_rego'left downto dmem_data_t'length => '0') & jtag_ld_dout;
|
||||
-- user_rego <= id;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- ROM Read/Write
|
||||
--------------------------------------------------------------------------
|
||||
PROM_READ:
|
||||
process(clk, ce)
|
||||
begin
|
||||
if rising_edge(clk) and ce = '1' then
|
||||
dout <= xmem_rom(to_integer(addr));
|
||||
end if;
|
||||
end process;
|
||||
|
||||
PROM_WRITE:
|
||||
process(jtag_ld_clk, jtag_ld_we)
|
||||
begin
|
||||
if rising_edge(jtag_ld_clk) then
|
||||
if jtag_ld_we = '1' then
|
||||
xmem_rom(to_integer(jtag_ld_addr)) <= jtag_ld_din;
|
||||
else
|
||||
jtag_ld_dout <= xmem_rom(to_integer(jtag_ld_addr));
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
end loadable;
|
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,317 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The ROM file for use in your VHDL design
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
-- JASM_ROM_INSERT_HERE
|
||||
ENTITY xrom IS
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
addr : in dmem_addr_t;
|
||||
dout : out dmem_data_t
|
||||
);
|
||||
END xrom;
|
||||
|
||||
ARCHITECTURE itest OF xrom IS
|
||||
|
||||
type xmem_rom_t is array (0 to 255) of dmem_data_t;
|
||||
|
||||
-- Assembled from itest.jsm
|
||||
constant xmem_rom : xmem_rom_t :=
|
||||
(
|
||||
X"48", -- 0x00
|
||||
X"61", -- 0x01
|
||||
X"6C", -- 0x02
|
||||
X"6C", -- 0x03
|
||||
X"6F", -- 0x04
|
||||
X"00", -- 0x05
|
||||
X"00", -- 0x06
|
||||
X"00", -- 0x07
|
||||
X"00", -- 0x08
|
||||
X"00", -- 0x09
|
||||
X"00", -- 0x0A
|
||||
X"00", -- 0x0B
|
||||
X"00", -- 0x0C
|
||||
X"00", -- 0x0D
|
||||
X"00", -- 0x0E
|
||||
X"00", -- 0x0F
|
||||
X"00", -- 0x10
|
||||
X"00", -- 0x11
|
||||
X"00", -- 0x12
|
||||
X"00", -- 0x13
|
||||
X"00", -- 0x14
|
||||
X"00", -- 0x15
|
||||
X"00", -- 0x16
|
||||
X"00", -- 0x17
|
||||
X"00", -- 0x18
|
||||
X"00", -- 0x19
|
||||
X"00", -- 0x1A
|
||||
X"00", -- 0x1B
|
||||
X"00", -- 0x1C
|
||||
X"00", -- 0x1D
|
||||
X"00", -- 0x1E
|
||||
X"00", -- 0x1F
|
||||
X"00", -- 0x20
|
||||
X"00", -- 0x21
|
||||
X"00", -- 0x22
|
||||
X"00", -- 0x23
|
||||
X"00", -- 0x24
|
||||
X"00", -- 0x25
|
||||
X"00", -- 0x26
|
||||
X"00", -- 0x27
|
||||
X"00", -- 0x28
|
||||
X"00", -- 0x29
|
||||
X"00", -- 0x2A
|
||||
X"00", -- 0x2B
|
||||
X"00", -- 0x2C
|
||||
X"00", -- 0x2D
|
||||
X"00", -- 0x2E
|
||||
X"00", -- 0x2F
|
||||
X"00", -- 0x30
|
||||
X"00", -- 0x31
|
||||
X"00", -- 0x32
|
||||
X"00", -- 0x33
|
||||
X"00", -- 0x34
|
||||
X"00", -- 0x35
|
||||
X"00", -- 0x36
|
||||
X"00", -- 0x37
|
||||
X"00", -- 0x38
|
||||
X"00", -- 0x39
|
||||
X"00", -- 0x3A
|
||||
X"00", -- 0x3B
|
||||
X"00", -- 0x3C
|
||||
X"00", -- 0x3D
|
||||
X"00", -- 0x3E
|
||||
X"00", -- 0x3F
|
||||
X"00", -- 0x40
|
||||
X"00", -- 0x41
|
||||
X"00", -- 0x42
|
||||
X"00", -- 0x43
|
||||
X"00", -- 0x44
|
||||
X"00", -- 0x45
|
||||
X"00", -- 0x46
|
||||
X"00", -- 0x47
|
||||
X"00", -- 0x48
|
||||
X"00", -- 0x49
|
||||
X"00", -- 0x4A
|
||||
X"00", -- 0x4B
|
||||
X"00", -- 0x4C
|
||||
X"00", -- 0x4D
|
||||
X"00", -- 0x4E
|
||||
X"00", -- 0x4F
|
||||
X"00", -- 0x50
|
||||
X"00", -- 0x51
|
||||
X"00", -- 0x52
|
||||
X"00", -- 0x53
|
||||
X"00", -- 0x54
|
||||
X"00", -- 0x55
|
||||
X"00", -- 0x56
|
||||
X"00", -- 0x57
|
||||
X"00", -- 0x58
|
||||
X"00", -- 0x59
|
||||
X"00", -- 0x5A
|
||||
X"00", -- 0x5B
|
||||
X"00", -- 0x5C
|
||||
X"00", -- 0x5D
|
||||
X"00", -- 0x5E
|
||||
X"00", -- 0x5F
|
||||
X"00", -- 0x60
|
||||
X"00", -- 0x61
|
||||
X"00", -- 0x62
|
||||
X"00", -- 0x63
|
||||
X"00", -- 0x64
|
||||
X"00", -- 0x65
|
||||
X"00", -- 0x66
|
||||
X"00", -- 0x67
|
||||
X"00", -- 0x68
|
||||
X"00", -- 0x69
|
||||
X"00", -- 0x6A
|
||||
X"00", -- 0x6B
|
||||
X"00", -- 0x6C
|
||||
X"00", -- 0x6D
|
||||
X"00", -- 0x6E
|
||||
X"00", -- 0x6F
|
||||
X"00", -- 0x70
|
||||
X"00", -- 0x71
|
||||
X"00", -- 0x72
|
||||
X"00", -- 0x73
|
||||
X"00", -- 0x74
|
||||
X"00", -- 0x75
|
||||
X"00", -- 0x76
|
||||
X"00", -- 0x77
|
||||
X"00", -- 0x78
|
||||
X"00", -- 0x79
|
||||
X"00", -- 0x7A
|
||||
X"00", -- 0x7B
|
||||
X"00", -- 0x7C
|
||||
X"00", -- 0x7D
|
||||
X"00", -- 0x7E
|
||||
X"00", -- 0x7F
|
||||
X"00", -- 0x80
|
||||
X"00", -- 0x81
|
||||
X"00", -- 0x82
|
||||
X"00", -- 0x83
|
||||
X"00", -- 0x84
|
||||
X"00", -- 0x85
|
||||
X"00", -- 0x86
|
||||
X"00", -- 0x87
|
||||
X"00", -- 0x88
|
||||
X"00", -- 0x89
|
||||
X"00", -- 0x8A
|
||||
X"00", -- 0x8B
|
||||
X"00", -- 0x8C
|
||||
X"00", -- 0x8D
|
||||
X"00", -- 0x8E
|
||||
X"00", -- 0x8F
|
||||
X"00", -- 0x90
|
||||
X"00", -- 0x91
|
||||
X"00", -- 0x92
|
||||
X"00", -- 0x93
|
||||
X"00", -- 0x94
|
||||
X"00", -- 0x95
|
||||
X"00", -- 0x96
|
||||
X"00", -- 0x97
|
||||
X"00", -- 0x98
|
||||
X"00", -- 0x99
|
||||
X"00", -- 0x9A
|
||||
X"00", -- 0x9B
|
||||
X"00", -- 0x9C
|
||||
X"00", -- 0x9D
|
||||
X"00", -- 0x9E
|
||||
X"00", -- 0x9F
|
||||
X"00", -- 0xA0
|
||||
X"00", -- 0xA1
|
||||
X"00", -- 0xA2
|
||||
X"00", -- 0xA3
|
||||
X"00", -- 0xA4
|
||||
X"00", -- 0xA5
|
||||
X"00", -- 0xA6
|
||||
X"00", -- 0xA7
|
||||
X"00", -- 0xA8
|
||||
X"00", -- 0xA9
|
||||
X"00", -- 0xAA
|
||||
X"00", -- 0xAB
|
||||
X"00", -- 0xAC
|
||||
X"00", -- 0xAD
|
||||
X"00", -- 0xAE
|
||||
X"00", -- 0xAF
|
||||
X"00", -- 0xB0
|
||||
X"00", -- 0xB1
|
||||
X"00", -- 0xB2
|
||||
X"00", -- 0xB3
|
||||
X"00", -- 0xB4
|
||||
X"00", -- 0xB5
|
||||
X"00", -- 0xB6
|
||||
X"00", -- 0xB7
|
||||
X"00", -- 0xB8
|
||||
X"00", -- 0xB9
|
||||
X"00", -- 0xBA
|
||||
X"00", -- 0xBB
|
||||
X"00", -- 0xBC
|
||||
X"00", -- 0xBD
|
||||
X"00", -- 0xBE
|
||||
X"00", -- 0xBF
|
||||
X"00", -- 0xC0
|
||||
X"00", -- 0xC1
|
||||
X"00", -- 0xC2
|
||||
X"00", -- 0xC3
|
||||
X"00", -- 0xC4
|
||||
X"00", -- 0xC5
|
||||
X"00", -- 0xC6
|
||||
X"00", -- 0xC7
|
||||
X"00", -- 0xC8
|
||||
X"00", -- 0xC9
|
||||
X"00", -- 0xCA
|
||||
X"00", -- 0xCB
|
||||
X"00", -- 0xCC
|
||||
X"00", -- 0xCD
|
||||
X"00", -- 0xCE
|
||||
X"00", -- 0xCF
|
||||
X"00", -- 0xD0
|
||||
X"00", -- 0xD1
|
||||
X"00", -- 0xD2
|
||||
X"00", -- 0xD3
|
||||
X"00", -- 0xD4
|
||||
X"00", -- 0xD5
|
||||
X"00", -- 0xD6
|
||||
X"00", -- 0xD7
|
||||
X"00", -- 0xD8
|
||||
X"00", -- 0xD9
|
||||
X"00", -- 0xDA
|
||||
X"00", -- 0xDB
|
||||
X"00", -- 0xDC
|
||||
X"00", -- 0xDD
|
||||
X"00", -- 0xDE
|
||||
X"00", -- 0xDF
|
||||
X"00", -- 0xE0
|
||||
X"00", -- 0xE1
|
||||
X"00", -- 0xE2
|
||||
X"00", -- 0xE3
|
||||
X"00", -- 0xE4
|
||||
X"00", -- 0xE5
|
||||
X"00", -- 0xE6
|
||||
X"00", -- 0xE7
|
||||
X"00", -- 0xE8
|
||||
X"00", -- 0xE9
|
||||
X"00", -- 0xEA
|
||||
X"00", -- 0xEB
|
||||
X"00", -- 0xEC
|
||||
X"00", -- 0xED
|
||||
X"00", -- 0xEE
|
||||
X"00", -- 0xEF
|
||||
X"00", -- 0xF0
|
||||
X"00", -- 0xF1
|
||||
X"00", -- 0xF2
|
||||
X"00", -- 0xF3
|
||||
X"00", -- 0xF4
|
||||
X"00", -- 0xF5
|
||||
X"00", -- 0xF6
|
||||
X"00", -- 0xF7
|
||||
X"00", -- 0xF8
|
||||
X"00", -- 0xF9
|
||||
X"00", -- 0xFA
|
||||
X"00", -- 0xFB
|
||||
X"00", -- 0xFC
|
||||
X"00", -- 0xFD
|
||||
X"00", -- 0xFE
|
||||
X"00" -- 0xFF
|
||||
);
|
||||
|
||||
begin
|
||||
|
||||
PROM_READ:
|
||||
process(clk, ce)
|
||||
begin
|
||||
if rising_edge(clk) and ce = '1' then
|
||||
dout <= xmem_rom(to_integer(addr));
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end itest;
|
||||
|
||||
@@ -0,0 +1,413 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: loadable ROM
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library UNISIM;
|
||||
use UNISIM.VComponents.all;
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
ENTITY xrom IS
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
addr : in dmem_addr_t;
|
||||
dout : out dmem_data_t
|
||||
);
|
||||
|
||||
END xrom;
|
||||
|
||||
ARCHITECTURE loadable OF xrom IS
|
||||
|
||||
-- JASM_ROM_INSERT_HERE
|
||||
|
||||
-- Assembled from itest.jsm
|
||||
type xmem_rom_t is array (0 to 255) of dmem_data_t;
|
||||
signal xmem_rom : xmem_rom_t :=
|
||||
(
|
||||
X"48", -- 0x00
|
||||
X"61", -- 0x01
|
||||
X"6C", -- 0x02
|
||||
X"6C", -- 0x03
|
||||
X"6F", -- 0x04
|
||||
X"00", -- 0x05
|
||||
X"00", -- 0x06
|
||||
X"00", -- 0x07
|
||||
X"00", -- 0x08
|
||||
X"00", -- 0x09
|
||||
X"00", -- 0x0A
|
||||
X"00", -- 0x0B
|
||||
X"00", -- 0x0C
|
||||
X"00", -- 0x0D
|
||||
X"00", -- 0x0E
|
||||
X"00", -- 0x0F
|
||||
X"00", -- 0x10
|
||||
X"00", -- 0x11
|
||||
X"00", -- 0x12
|
||||
X"00", -- 0x13
|
||||
X"00", -- 0x14
|
||||
X"00", -- 0x15
|
||||
X"00", -- 0x16
|
||||
X"00", -- 0x17
|
||||
X"00", -- 0x18
|
||||
X"00", -- 0x19
|
||||
X"00", -- 0x1A
|
||||
X"00", -- 0x1B
|
||||
X"00", -- 0x1C
|
||||
X"00", -- 0x1D
|
||||
X"00", -- 0x1E
|
||||
X"00", -- 0x1F
|
||||
X"00", -- 0x20
|
||||
X"00", -- 0x21
|
||||
X"00", -- 0x22
|
||||
X"00", -- 0x23
|
||||
X"00", -- 0x24
|
||||
X"00", -- 0x25
|
||||
X"00", -- 0x26
|
||||
X"00", -- 0x27
|
||||
X"00", -- 0x28
|
||||
X"00", -- 0x29
|
||||
X"00", -- 0x2A
|
||||
X"00", -- 0x2B
|
||||
X"00", -- 0x2C
|
||||
X"00", -- 0x2D
|
||||
X"00", -- 0x2E
|
||||
X"00", -- 0x2F
|
||||
X"00", -- 0x30
|
||||
X"00", -- 0x31
|
||||
X"00", -- 0x32
|
||||
X"00", -- 0x33
|
||||
X"00", -- 0x34
|
||||
X"00", -- 0x35
|
||||
X"00", -- 0x36
|
||||
X"00", -- 0x37
|
||||
X"00", -- 0x38
|
||||
X"00", -- 0x39
|
||||
X"00", -- 0x3A
|
||||
X"00", -- 0x3B
|
||||
X"00", -- 0x3C
|
||||
X"00", -- 0x3D
|
||||
X"00", -- 0x3E
|
||||
X"00", -- 0x3F
|
||||
X"00", -- 0x40
|
||||
X"00", -- 0x41
|
||||
X"00", -- 0x42
|
||||
X"00", -- 0x43
|
||||
X"00", -- 0x44
|
||||
X"00", -- 0x45
|
||||
X"00", -- 0x46
|
||||
X"00", -- 0x47
|
||||
X"00", -- 0x48
|
||||
X"00", -- 0x49
|
||||
X"00", -- 0x4A
|
||||
X"00", -- 0x4B
|
||||
X"00", -- 0x4C
|
||||
X"00", -- 0x4D
|
||||
X"00", -- 0x4E
|
||||
X"00", -- 0x4F
|
||||
X"00", -- 0x50
|
||||
X"00", -- 0x51
|
||||
X"00", -- 0x52
|
||||
X"00", -- 0x53
|
||||
X"00", -- 0x54
|
||||
X"00", -- 0x55
|
||||
X"00", -- 0x56
|
||||
X"00", -- 0x57
|
||||
X"00", -- 0x58
|
||||
X"00", -- 0x59
|
||||
X"00", -- 0x5A
|
||||
X"00", -- 0x5B
|
||||
X"00", -- 0x5C
|
||||
X"00", -- 0x5D
|
||||
X"00", -- 0x5E
|
||||
X"00", -- 0x5F
|
||||
X"00", -- 0x60
|
||||
X"00", -- 0x61
|
||||
X"00", -- 0x62
|
||||
X"00", -- 0x63
|
||||
X"00", -- 0x64
|
||||
X"00", -- 0x65
|
||||
X"00", -- 0x66
|
||||
X"00", -- 0x67
|
||||
X"00", -- 0x68
|
||||
X"00", -- 0x69
|
||||
X"00", -- 0x6A
|
||||
X"00", -- 0x6B
|
||||
X"00", -- 0x6C
|
||||
X"00", -- 0x6D
|
||||
X"00", -- 0x6E
|
||||
X"00", -- 0x6F
|
||||
X"00", -- 0x70
|
||||
X"00", -- 0x71
|
||||
X"00", -- 0x72
|
||||
X"00", -- 0x73
|
||||
X"00", -- 0x74
|
||||
X"00", -- 0x75
|
||||
X"00", -- 0x76
|
||||
X"00", -- 0x77
|
||||
X"00", -- 0x78
|
||||
X"00", -- 0x79
|
||||
X"00", -- 0x7A
|
||||
X"00", -- 0x7B
|
||||
X"00", -- 0x7C
|
||||
X"00", -- 0x7D
|
||||
X"00", -- 0x7E
|
||||
X"00", -- 0x7F
|
||||
X"00", -- 0x80
|
||||
X"00", -- 0x81
|
||||
X"00", -- 0x82
|
||||
X"00", -- 0x83
|
||||
X"00", -- 0x84
|
||||
X"00", -- 0x85
|
||||
X"00", -- 0x86
|
||||
X"00", -- 0x87
|
||||
X"00", -- 0x88
|
||||
X"00", -- 0x89
|
||||
X"00", -- 0x8A
|
||||
X"00", -- 0x8B
|
||||
X"00", -- 0x8C
|
||||
X"00", -- 0x8D
|
||||
X"00", -- 0x8E
|
||||
X"00", -- 0x8F
|
||||
X"00", -- 0x90
|
||||
X"00", -- 0x91
|
||||
X"00", -- 0x92
|
||||
X"00", -- 0x93
|
||||
X"00", -- 0x94
|
||||
X"00", -- 0x95
|
||||
X"00", -- 0x96
|
||||
X"00", -- 0x97
|
||||
X"00", -- 0x98
|
||||
X"00", -- 0x99
|
||||
X"00", -- 0x9A
|
||||
X"00", -- 0x9B
|
||||
X"00", -- 0x9C
|
||||
X"00", -- 0x9D
|
||||
X"00", -- 0x9E
|
||||
X"00", -- 0x9F
|
||||
X"00", -- 0xA0
|
||||
X"00", -- 0xA1
|
||||
X"00", -- 0xA2
|
||||
X"00", -- 0xA3
|
||||
X"00", -- 0xA4
|
||||
X"00", -- 0xA5
|
||||
X"00", -- 0xA6
|
||||
X"00", -- 0xA7
|
||||
X"00", -- 0xA8
|
||||
X"00", -- 0xA9
|
||||
X"00", -- 0xAA
|
||||
X"00", -- 0xAB
|
||||
X"00", -- 0xAC
|
||||
X"00", -- 0xAD
|
||||
X"00", -- 0xAE
|
||||
X"00", -- 0xAF
|
||||
X"00", -- 0xB0
|
||||
X"00", -- 0xB1
|
||||
X"00", -- 0xB2
|
||||
X"00", -- 0xB3
|
||||
X"00", -- 0xB4
|
||||
X"00", -- 0xB5
|
||||
X"00", -- 0xB6
|
||||
X"00", -- 0xB7
|
||||
X"00", -- 0xB8
|
||||
X"00", -- 0xB9
|
||||
X"00", -- 0xBA
|
||||
X"00", -- 0xBB
|
||||
X"00", -- 0xBC
|
||||
X"00", -- 0xBD
|
||||
X"00", -- 0xBE
|
||||
X"00", -- 0xBF
|
||||
X"00", -- 0xC0
|
||||
X"00", -- 0xC1
|
||||
X"00", -- 0xC2
|
||||
X"00", -- 0xC3
|
||||
X"00", -- 0xC4
|
||||
X"00", -- 0xC5
|
||||
X"00", -- 0xC6
|
||||
X"00", -- 0xC7
|
||||
X"00", -- 0xC8
|
||||
X"00", -- 0xC9
|
||||
X"00", -- 0xCA
|
||||
X"00", -- 0xCB
|
||||
X"00", -- 0xCC
|
||||
X"00", -- 0xCD
|
||||
X"00", -- 0xCE
|
||||
X"00", -- 0xCF
|
||||
X"00", -- 0xD0
|
||||
X"00", -- 0xD1
|
||||
X"00", -- 0xD2
|
||||
X"00", -- 0xD3
|
||||
X"00", -- 0xD4
|
||||
X"00", -- 0xD5
|
||||
X"00", -- 0xD6
|
||||
X"00", -- 0xD7
|
||||
X"00", -- 0xD8
|
||||
X"00", -- 0xD9
|
||||
X"00", -- 0xDA
|
||||
X"00", -- 0xDB
|
||||
X"00", -- 0xDC
|
||||
X"00", -- 0xDD
|
||||
X"00", -- 0xDE
|
||||
X"00", -- 0xDF
|
||||
X"00", -- 0xE0
|
||||
X"00", -- 0xE1
|
||||
X"00", -- 0xE2
|
||||
X"00", -- 0xE3
|
||||
X"00", -- 0xE4
|
||||
X"00", -- 0xE5
|
||||
X"00", -- 0xE6
|
||||
X"00", -- 0xE7
|
||||
X"00", -- 0xE8
|
||||
X"00", -- 0xE9
|
||||
X"00", -- 0xEA
|
||||
X"00", -- 0xEB
|
||||
X"00", -- 0xEC
|
||||
X"00", -- 0xED
|
||||
X"00", -- 0xEE
|
||||
X"00", -- 0xEF
|
||||
X"00", -- 0xF0
|
||||
X"00", -- 0xF1
|
||||
X"00", -- 0xF2
|
||||
X"00", -- 0xF3
|
||||
X"00", -- 0xF4
|
||||
X"00", -- 0xF5
|
||||
X"00", -- 0xF6
|
||||
X"00", -- 0xF7
|
||||
X"00", -- 0xF8
|
||||
X"00", -- 0xF9
|
||||
X"00", -- 0xFA
|
||||
X"00", -- 0xFB
|
||||
X"00", -- 0xFC
|
||||
X"00", -- 0xFD
|
||||
X"00", -- 0xFE
|
||||
X"00" -- 0xFF
|
||||
);
|
||||
|
||||
signal jtag_ld_clk : STD_LOGIC;
|
||||
signal jtag_ld_we : STD_LOGIC;
|
||||
signal jtag_ld_addr : dmem_addr_t;
|
||||
signal jtag_ld_dout : dmem_data_t;
|
||||
signal jtag_ld_din : dmem_data_t;
|
||||
signal bs_rst, bs_sel, bs_shift, bs_tdi, bs_tdo : std_logic;
|
||||
signal bs_capture, bs_clk0, bs_clk1, bs_update0, bs_update1 : std_logic;
|
||||
signal user_regi, user_rego : unsigned (15 downto 0);
|
||||
constant id : unsigned (15 downto 0) := X"BEEF";
|
||||
|
||||
begin
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- Virtex-4: JTAG Loader
|
||||
--------------------------------------------------------------------------
|
||||
i00_BUFG : BUFG
|
||||
port map
|
||||
(
|
||||
O => bs_clk1,
|
||||
I => bs_clk0
|
||||
);
|
||||
|
||||
i01_BUFG : BUFG
|
||||
port map
|
||||
(
|
||||
O => bs_update1,
|
||||
I => bs_update0
|
||||
);
|
||||
|
||||
BSCAN_VIRTEX4_inst2 : BSCAN_VIRTEX4
|
||||
generic map
|
||||
(
|
||||
JTAG_CHAIN => 2 -- Value to set BSCAN site of device. Possible values: (1,2,3 or 4)
|
||||
)
|
||||
port map
|
||||
(
|
||||
CAPTURE => bs_capture, -- CAPTURE output from TAP controller
|
||||
DRCK => bs_clk0, -- Data register output for USER functions
|
||||
RESET => bs_rst, -- Reset output from TAP controller
|
||||
SEL => bs_sel, -- USER active output
|
||||
SHIFT => bs_shift, -- SHIFT output from TAP controller
|
||||
TDI => bs_tdi, -- TDI output from TAP controller
|
||||
UPDATE => bs_update0, -- UPDATE output from TAP controller
|
||||
TDO => bs_tdo -- Data input for USER function
|
||||
);
|
||||
|
||||
jtag_ld_addr <= user_regi(user_regi'left downto user_regi'left-dmem_data_t'length+1);
|
||||
jtag_ld_din <= user_regi(dmem_data_t'left downto 0);
|
||||
jtag_ld_clk <= bs_update1;
|
||||
jtag_ld_we <= bs_sel;
|
||||
|
||||
sipo:
|
||||
process (bs_rst, bs_clk1, bs_tdi, bs_shift)
|
||||
begin
|
||||
if bs_rst = '1' then
|
||||
user_regi <= (others => '0');
|
||||
elsif rising_edge(bs_clk1) then
|
||||
if bs_shift = '1' then
|
||||
user_regi <= bs_tdi & user_regi(user_regi'left downto 1);
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
piso:
|
||||
process (bs_rst, bs_clk1, bs_shift, user_rego)
|
||||
begin
|
||||
bs_tdo <= user_rego(0);
|
||||
if bs_rst = '1' then
|
||||
user_rego <= (others => '0');
|
||||
elsif rising_edge(bs_clk1) then
|
||||
if bs_shift = '1' then
|
||||
user_rego <= user_rego(0) & user_rego(user_rego'left downto 1);
|
||||
else
|
||||
user_rego <= (user_rego'left downto dmem_data_t'length => '0') & jtag_ld_dout;
|
||||
-- user_rego <= id;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- ROM Read/Write
|
||||
--------------------------------------------------------------------------
|
||||
PROM_READ:
|
||||
process(clk, ce)
|
||||
begin
|
||||
if rising_edge(clk) and ce = '1' then
|
||||
dout <= xmem_rom(to_integer(addr));
|
||||
end if;
|
||||
end process;
|
||||
|
||||
PROM_WRITE:
|
||||
process(jtag_ld_clk, jtag_ld_we)
|
||||
begin
|
||||
if rising_edge(jtag_ld_clk) then
|
||||
if jtag_ld_we = '1' then
|
||||
xmem_rom(to_integer(jtag_ld_addr)) <= jtag_ld_din;
|
||||
else
|
||||
jtag_ld_dout <= xmem_rom(to_integer(jtag_ld_addr));
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
end loadable;
|
||||
@@ -0,0 +1,88 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The ROM file for use in your VHDL design
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
-- JASM_ROM_INSERT_HERE
|
||||
ENTITY irom IS
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
addr : in inst_addr_t;
|
||||
dout : out inst_t
|
||||
);
|
||||
END irom;
|
||||
|
||||
ARCHITECTURE mul8x8 OF irom IS
|
||||
|
||||
type imem_rom_t is array (0 to 26) of inst_t;
|
||||
|
||||
-- Assembled from mul8x8.jsm
|
||||
constant imem_rom : imem_rom_t :=
|
||||
(
|
||||
"110000" & X"001", -- 0x000: JMP 0x001
|
||||
"000011" & X"450", -- 0x001: MOV R00, 0x45
|
||||
"000011" & X"F51", -- 0x002: MOV R01, 0xF5
|
||||
"111011" & X"005", -- 0x003: CALL 0x005
|
||||
"110000" & X"004", -- 0x004: JMP 0x004
|
||||
"111100" & X"002", -- 0x005: PUSH R02
|
||||
"111100" & X"003", -- 0x006: PUSH R03
|
||||
"111100" & X"004", -- 0x007: PUSH R04
|
||||
"000010" & X"014", -- 0x008: MOV R04, R01
|
||||
"000011" & X"001", -- 0x009: MOV R01, 0x00
|
||||
"000011" & X"002", -- 0x00A: MOV R02, 0x00
|
||||
"000011" & X"003", -- 0x00B: MOV R03, 0x00
|
||||
"001111" & X"014", -- 0x00C: CMP R04, 0x01
|
||||
"111001" & X"015", -- 0x00D: JEQ 0x015
|
||||
"011111" & X"004", -- 0x00E: SHR R04
|
||||
"110100" & X"012", -- 0x00F: JNC 0x012
|
||||
"010000" & X"002", -- 0x010: ADD R02, R00
|
||||
"010010" & X"013", -- 0x011: ADDC R03, R01
|
||||
"011110" & X"000", -- 0x012: SHL R00
|
||||
"100010" & X"001", -- 0x013: ROLC R01
|
||||
"110000" & X"00C", -- 0x014: JMP 0x00C
|
||||
"010000" & X"020", -- 0x015: ADD R00, R02
|
||||
"010010" & X"031", -- 0x016: ADDC R01, R03
|
||||
"111101" & X"004", -- 0x017: POP R04
|
||||
"111101" & X"003", -- 0x018: POP R03
|
||||
"111101" & X"002", -- 0x019: POP R02
|
||||
"111110" & X"000" -- 0x01A: RET
|
||||
);
|
||||
|
||||
begin
|
||||
|
||||
PROM_READ:
|
||||
process(clk, ce)
|
||||
begin
|
||||
if rising_edge(clk) and ce = '1' then
|
||||
dout <= imem_rom(to_integer(addr));
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end mul8x8;
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,317 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The ROM file for use in your VHDL design
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
-- JASM_ROM_INSERT_HERE
|
||||
ENTITY xrom IS
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
addr : in dmem_addr_t;
|
||||
dout : out dmem_data_t
|
||||
);
|
||||
END xrom;
|
||||
|
||||
ARCHITECTURE mul8x8 OF xrom IS
|
||||
|
||||
type xmem_rom_t is array (0 to 255) of dmem_data_t;
|
||||
|
||||
-- Assembled from mul8x8.jsm
|
||||
constant xmem_rom : xmem_rom_t :=
|
||||
(
|
||||
X"00", -- 0x00
|
||||
X"00", -- 0x01
|
||||
X"00", -- 0x02
|
||||
X"00", -- 0x03
|
||||
X"00", -- 0x04
|
||||
X"00", -- 0x05
|
||||
X"00", -- 0x06
|
||||
X"00", -- 0x07
|
||||
X"00", -- 0x08
|
||||
X"00", -- 0x09
|
||||
X"00", -- 0x0A
|
||||
X"00", -- 0x0B
|
||||
X"00", -- 0x0C
|
||||
X"00", -- 0x0D
|
||||
X"00", -- 0x0E
|
||||
X"00", -- 0x0F
|
||||
X"00", -- 0x10
|
||||
X"00", -- 0x11
|
||||
X"00", -- 0x12
|
||||
X"00", -- 0x13
|
||||
X"00", -- 0x14
|
||||
X"00", -- 0x15
|
||||
X"00", -- 0x16
|
||||
X"00", -- 0x17
|
||||
X"00", -- 0x18
|
||||
X"00", -- 0x19
|
||||
X"00", -- 0x1A
|
||||
X"00", -- 0x1B
|
||||
X"00", -- 0x1C
|
||||
X"00", -- 0x1D
|
||||
X"00", -- 0x1E
|
||||
X"00", -- 0x1F
|
||||
X"00", -- 0x20
|
||||
X"00", -- 0x21
|
||||
X"00", -- 0x22
|
||||
X"00", -- 0x23
|
||||
X"00", -- 0x24
|
||||
X"00", -- 0x25
|
||||
X"00", -- 0x26
|
||||
X"00", -- 0x27
|
||||
X"00", -- 0x28
|
||||
X"00", -- 0x29
|
||||
X"00", -- 0x2A
|
||||
X"00", -- 0x2B
|
||||
X"00", -- 0x2C
|
||||
X"00", -- 0x2D
|
||||
X"00", -- 0x2E
|
||||
X"00", -- 0x2F
|
||||
X"00", -- 0x30
|
||||
X"00", -- 0x31
|
||||
X"00", -- 0x32
|
||||
X"00", -- 0x33
|
||||
X"00", -- 0x34
|
||||
X"00", -- 0x35
|
||||
X"00", -- 0x36
|
||||
X"00", -- 0x37
|
||||
X"00", -- 0x38
|
||||
X"00", -- 0x39
|
||||
X"00", -- 0x3A
|
||||
X"00", -- 0x3B
|
||||
X"00", -- 0x3C
|
||||
X"00", -- 0x3D
|
||||
X"00", -- 0x3E
|
||||
X"00", -- 0x3F
|
||||
X"00", -- 0x40
|
||||
X"00", -- 0x41
|
||||
X"00", -- 0x42
|
||||
X"00", -- 0x43
|
||||
X"00", -- 0x44
|
||||
X"00", -- 0x45
|
||||
X"00", -- 0x46
|
||||
X"00", -- 0x47
|
||||
X"00", -- 0x48
|
||||
X"00", -- 0x49
|
||||
X"00", -- 0x4A
|
||||
X"00", -- 0x4B
|
||||
X"00", -- 0x4C
|
||||
X"00", -- 0x4D
|
||||
X"00", -- 0x4E
|
||||
X"00", -- 0x4F
|
||||
X"00", -- 0x50
|
||||
X"00", -- 0x51
|
||||
X"00", -- 0x52
|
||||
X"00", -- 0x53
|
||||
X"00", -- 0x54
|
||||
X"00", -- 0x55
|
||||
X"00", -- 0x56
|
||||
X"00", -- 0x57
|
||||
X"00", -- 0x58
|
||||
X"00", -- 0x59
|
||||
X"00", -- 0x5A
|
||||
X"00", -- 0x5B
|
||||
X"00", -- 0x5C
|
||||
X"00", -- 0x5D
|
||||
X"00", -- 0x5E
|
||||
X"00", -- 0x5F
|
||||
X"00", -- 0x60
|
||||
X"00", -- 0x61
|
||||
X"00", -- 0x62
|
||||
X"00", -- 0x63
|
||||
X"00", -- 0x64
|
||||
X"00", -- 0x65
|
||||
X"00", -- 0x66
|
||||
X"00", -- 0x67
|
||||
X"00", -- 0x68
|
||||
X"00", -- 0x69
|
||||
X"00", -- 0x6A
|
||||
X"00", -- 0x6B
|
||||
X"00", -- 0x6C
|
||||
X"00", -- 0x6D
|
||||
X"00", -- 0x6E
|
||||
X"00", -- 0x6F
|
||||
X"00", -- 0x70
|
||||
X"00", -- 0x71
|
||||
X"00", -- 0x72
|
||||
X"00", -- 0x73
|
||||
X"00", -- 0x74
|
||||
X"00", -- 0x75
|
||||
X"00", -- 0x76
|
||||
X"00", -- 0x77
|
||||
X"00", -- 0x78
|
||||
X"00", -- 0x79
|
||||
X"00", -- 0x7A
|
||||
X"00", -- 0x7B
|
||||
X"00", -- 0x7C
|
||||
X"00", -- 0x7D
|
||||
X"00", -- 0x7E
|
||||
X"00", -- 0x7F
|
||||
X"00", -- 0x80
|
||||
X"00", -- 0x81
|
||||
X"00", -- 0x82
|
||||
X"00", -- 0x83
|
||||
X"00", -- 0x84
|
||||
X"00", -- 0x85
|
||||
X"00", -- 0x86
|
||||
X"00", -- 0x87
|
||||
X"00", -- 0x88
|
||||
X"00", -- 0x89
|
||||
X"00", -- 0x8A
|
||||
X"00", -- 0x8B
|
||||
X"00", -- 0x8C
|
||||
X"00", -- 0x8D
|
||||
X"00", -- 0x8E
|
||||
X"00", -- 0x8F
|
||||
X"00", -- 0x90
|
||||
X"00", -- 0x91
|
||||
X"00", -- 0x92
|
||||
X"00", -- 0x93
|
||||
X"00", -- 0x94
|
||||
X"00", -- 0x95
|
||||
X"00", -- 0x96
|
||||
X"00", -- 0x97
|
||||
X"00", -- 0x98
|
||||
X"00", -- 0x99
|
||||
X"00", -- 0x9A
|
||||
X"00", -- 0x9B
|
||||
X"00", -- 0x9C
|
||||
X"00", -- 0x9D
|
||||
X"00", -- 0x9E
|
||||
X"00", -- 0x9F
|
||||
X"00", -- 0xA0
|
||||
X"00", -- 0xA1
|
||||
X"00", -- 0xA2
|
||||
X"00", -- 0xA3
|
||||
X"00", -- 0xA4
|
||||
X"00", -- 0xA5
|
||||
X"00", -- 0xA6
|
||||
X"00", -- 0xA7
|
||||
X"00", -- 0xA8
|
||||
X"00", -- 0xA9
|
||||
X"00", -- 0xAA
|
||||
X"00", -- 0xAB
|
||||
X"00", -- 0xAC
|
||||
X"00", -- 0xAD
|
||||
X"00", -- 0xAE
|
||||
X"00", -- 0xAF
|
||||
X"00", -- 0xB0
|
||||
X"00", -- 0xB1
|
||||
X"00", -- 0xB2
|
||||
X"00", -- 0xB3
|
||||
X"00", -- 0xB4
|
||||
X"00", -- 0xB5
|
||||
X"00", -- 0xB6
|
||||
X"00", -- 0xB7
|
||||
X"00", -- 0xB8
|
||||
X"00", -- 0xB9
|
||||
X"00", -- 0xBA
|
||||
X"00", -- 0xBB
|
||||
X"00", -- 0xBC
|
||||
X"00", -- 0xBD
|
||||
X"00", -- 0xBE
|
||||
X"00", -- 0xBF
|
||||
X"00", -- 0xC0
|
||||
X"00", -- 0xC1
|
||||
X"00", -- 0xC2
|
||||
X"00", -- 0xC3
|
||||
X"00", -- 0xC4
|
||||
X"00", -- 0xC5
|
||||
X"00", -- 0xC6
|
||||
X"00", -- 0xC7
|
||||
X"00", -- 0xC8
|
||||
X"00", -- 0xC9
|
||||
X"00", -- 0xCA
|
||||
X"00", -- 0xCB
|
||||
X"00", -- 0xCC
|
||||
X"00", -- 0xCD
|
||||
X"00", -- 0xCE
|
||||
X"00", -- 0xCF
|
||||
X"00", -- 0xD0
|
||||
X"00", -- 0xD1
|
||||
X"00", -- 0xD2
|
||||
X"00", -- 0xD3
|
||||
X"00", -- 0xD4
|
||||
X"00", -- 0xD5
|
||||
X"00", -- 0xD6
|
||||
X"00", -- 0xD7
|
||||
X"00", -- 0xD8
|
||||
X"00", -- 0xD9
|
||||
X"00", -- 0xDA
|
||||
X"00", -- 0xDB
|
||||
X"00", -- 0xDC
|
||||
X"00", -- 0xDD
|
||||
X"00", -- 0xDE
|
||||
X"00", -- 0xDF
|
||||
X"00", -- 0xE0
|
||||
X"00", -- 0xE1
|
||||
X"00", -- 0xE2
|
||||
X"00", -- 0xE3
|
||||
X"00", -- 0xE4
|
||||
X"00", -- 0xE5
|
||||
X"00", -- 0xE6
|
||||
X"00", -- 0xE7
|
||||
X"00", -- 0xE8
|
||||
X"00", -- 0xE9
|
||||
X"00", -- 0xEA
|
||||
X"00", -- 0xEB
|
||||
X"00", -- 0xEC
|
||||
X"00", -- 0xED
|
||||
X"00", -- 0xEE
|
||||
X"00", -- 0xEF
|
||||
X"00", -- 0xF0
|
||||
X"00", -- 0xF1
|
||||
X"00", -- 0xF2
|
||||
X"00", -- 0xF3
|
||||
X"00", -- 0xF4
|
||||
X"00", -- 0xF5
|
||||
X"00", -- 0xF6
|
||||
X"00", -- 0xF7
|
||||
X"00", -- 0xF8
|
||||
X"00", -- 0xF9
|
||||
X"00", -- 0xFA
|
||||
X"00", -- 0xFB
|
||||
X"00", -- 0xFC
|
||||
X"00", -- 0xFD
|
||||
X"00", -- 0xFE
|
||||
X"00" -- 0xFF
|
||||
);
|
||||
|
||||
begin
|
||||
|
||||
PROM_READ:
|
||||
process(clk, ce)
|
||||
begin
|
||||
if rising_edge(clk) and ce = '1' then
|
||||
dout <= xmem_rom(to_integer(addr));
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end mul8x8;
|
||||
|
||||
@@ -0,0 +1,413 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: loadable ROM
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library UNISIM;
|
||||
use UNISIM.VComponents.all;
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
ENTITY xrom IS
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
addr : in dmem_addr_t;
|
||||
dout : out dmem_data_t
|
||||
);
|
||||
|
||||
END xrom;
|
||||
|
||||
ARCHITECTURE loadable OF xrom IS
|
||||
|
||||
-- JASM_ROM_INSERT_HERE
|
||||
|
||||
-- Assembled from mul8x8.jsm
|
||||
type xmem_rom_t is array (0 to 255) of dmem_data_t;
|
||||
signal xmem_rom : xmem_rom_t :=
|
||||
(
|
||||
X"00", -- 0x00
|
||||
X"00", -- 0x01
|
||||
X"00", -- 0x02
|
||||
X"00", -- 0x03
|
||||
X"00", -- 0x04
|
||||
X"00", -- 0x05
|
||||
X"00", -- 0x06
|
||||
X"00", -- 0x07
|
||||
X"00", -- 0x08
|
||||
X"00", -- 0x09
|
||||
X"00", -- 0x0A
|
||||
X"00", -- 0x0B
|
||||
X"00", -- 0x0C
|
||||
X"00", -- 0x0D
|
||||
X"00", -- 0x0E
|
||||
X"00", -- 0x0F
|
||||
X"00", -- 0x10
|
||||
X"00", -- 0x11
|
||||
X"00", -- 0x12
|
||||
X"00", -- 0x13
|
||||
X"00", -- 0x14
|
||||
X"00", -- 0x15
|
||||
X"00", -- 0x16
|
||||
X"00", -- 0x17
|
||||
X"00", -- 0x18
|
||||
X"00", -- 0x19
|
||||
X"00", -- 0x1A
|
||||
X"00", -- 0x1B
|
||||
X"00", -- 0x1C
|
||||
X"00", -- 0x1D
|
||||
X"00", -- 0x1E
|
||||
X"00", -- 0x1F
|
||||
X"00", -- 0x20
|
||||
X"00", -- 0x21
|
||||
X"00", -- 0x22
|
||||
X"00", -- 0x23
|
||||
X"00", -- 0x24
|
||||
X"00", -- 0x25
|
||||
X"00", -- 0x26
|
||||
X"00", -- 0x27
|
||||
X"00", -- 0x28
|
||||
X"00", -- 0x29
|
||||
X"00", -- 0x2A
|
||||
X"00", -- 0x2B
|
||||
X"00", -- 0x2C
|
||||
X"00", -- 0x2D
|
||||
X"00", -- 0x2E
|
||||
X"00", -- 0x2F
|
||||
X"00", -- 0x30
|
||||
X"00", -- 0x31
|
||||
X"00", -- 0x32
|
||||
X"00", -- 0x33
|
||||
X"00", -- 0x34
|
||||
X"00", -- 0x35
|
||||
X"00", -- 0x36
|
||||
X"00", -- 0x37
|
||||
X"00", -- 0x38
|
||||
X"00", -- 0x39
|
||||
X"00", -- 0x3A
|
||||
X"00", -- 0x3B
|
||||
X"00", -- 0x3C
|
||||
X"00", -- 0x3D
|
||||
X"00", -- 0x3E
|
||||
X"00", -- 0x3F
|
||||
X"00", -- 0x40
|
||||
X"00", -- 0x41
|
||||
X"00", -- 0x42
|
||||
X"00", -- 0x43
|
||||
X"00", -- 0x44
|
||||
X"00", -- 0x45
|
||||
X"00", -- 0x46
|
||||
X"00", -- 0x47
|
||||
X"00", -- 0x48
|
||||
X"00", -- 0x49
|
||||
X"00", -- 0x4A
|
||||
X"00", -- 0x4B
|
||||
X"00", -- 0x4C
|
||||
X"00", -- 0x4D
|
||||
X"00", -- 0x4E
|
||||
X"00", -- 0x4F
|
||||
X"00", -- 0x50
|
||||
X"00", -- 0x51
|
||||
X"00", -- 0x52
|
||||
X"00", -- 0x53
|
||||
X"00", -- 0x54
|
||||
X"00", -- 0x55
|
||||
X"00", -- 0x56
|
||||
X"00", -- 0x57
|
||||
X"00", -- 0x58
|
||||
X"00", -- 0x59
|
||||
X"00", -- 0x5A
|
||||
X"00", -- 0x5B
|
||||
X"00", -- 0x5C
|
||||
X"00", -- 0x5D
|
||||
X"00", -- 0x5E
|
||||
X"00", -- 0x5F
|
||||
X"00", -- 0x60
|
||||
X"00", -- 0x61
|
||||
X"00", -- 0x62
|
||||
X"00", -- 0x63
|
||||
X"00", -- 0x64
|
||||
X"00", -- 0x65
|
||||
X"00", -- 0x66
|
||||
X"00", -- 0x67
|
||||
X"00", -- 0x68
|
||||
X"00", -- 0x69
|
||||
X"00", -- 0x6A
|
||||
X"00", -- 0x6B
|
||||
X"00", -- 0x6C
|
||||
X"00", -- 0x6D
|
||||
X"00", -- 0x6E
|
||||
X"00", -- 0x6F
|
||||
X"00", -- 0x70
|
||||
X"00", -- 0x71
|
||||
X"00", -- 0x72
|
||||
X"00", -- 0x73
|
||||
X"00", -- 0x74
|
||||
X"00", -- 0x75
|
||||
X"00", -- 0x76
|
||||
X"00", -- 0x77
|
||||
X"00", -- 0x78
|
||||
X"00", -- 0x79
|
||||
X"00", -- 0x7A
|
||||
X"00", -- 0x7B
|
||||
X"00", -- 0x7C
|
||||
X"00", -- 0x7D
|
||||
X"00", -- 0x7E
|
||||
X"00", -- 0x7F
|
||||
X"00", -- 0x80
|
||||
X"00", -- 0x81
|
||||
X"00", -- 0x82
|
||||
X"00", -- 0x83
|
||||
X"00", -- 0x84
|
||||
X"00", -- 0x85
|
||||
X"00", -- 0x86
|
||||
X"00", -- 0x87
|
||||
X"00", -- 0x88
|
||||
X"00", -- 0x89
|
||||
X"00", -- 0x8A
|
||||
X"00", -- 0x8B
|
||||
X"00", -- 0x8C
|
||||
X"00", -- 0x8D
|
||||
X"00", -- 0x8E
|
||||
X"00", -- 0x8F
|
||||
X"00", -- 0x90
|
||||
X"00", -- 0x91
|
||||
X"00", -- 0x92
|
||||
X"00", -- 0x93
|
||||
X"00", -- 0x94
|
||||
X"00", -- 0x95
|
||||
X"00", -- 0x96
|
||||
X"00", -- 0x97
|
||||
X"00", -- 0x98
|
||||
X"00", -- 0x99
|
||||
X"00", -- 0x9A
|
||||
X"00", -- 0x9B
|
||||
X"00", -- 0x9C
|
||||
X"00", -- 0x9D
|
||||
X"00", -- 0x9E
|
||||
X"00", -- 0x9F
|
||||
X"00", -- 0xA0
|
||||
X"00", -- 0xA1
|
||||
X"00", -- 0xA2
|
||||
X"00", -- 0xA3
|
||||
X"00", -- 0xA4
|
||||
X"00", -- 0xA5
|
||||
X"00", -- 0xA6
|
||||
X"00", -- 0xA7
|
||||
X"00", -- 0xA8
|
||||
X"00", -- 0xA9
|
||||
X"00", -- 0xAA
|
||||
X"00", -- 0xAB
|
||||
X"00", -- 0xAC
|
||||
X"00", -- 0xAD
|
||||
X"00", -- 0xAE
|
||||
X"00", -- 0xAF
|
||||
X"00", -- 0xB0
|
||||
X"00", -- 0xB1
|
||||
X"00", -- 0xB2
|
||||
X"00", -- 0xB3
|
||||
X"00", -- 0xB4
|
||||
X"00", -- 0xB5
|
||||
X"00", -- 0xB6
|
||||
X"00", -- 0xB7
|
||||
X"00", -- 0xB8
|
||||
X"00", -- 0xB9
|
||||
X"00", -- 0xBA
|
||||
X"00", -- 0xBB
|
||||
X"00", -- 0xBC
|
||||
X"00", -- 0xBD
|
||||
X"00", -- 0xBE
|
||||
X"00", -- 0xBF
|
||||
X"00", -- 0xC0
|
||||
X"00", -- 0xC1
|
||||
X"00", -- 0xC2
|
||||
X"00", -- 0xC3
|
||||
X"00", -- 0xC4
|
||||
X"00", -- 0xC5
|
||||
X"00", -- 0xC6
|
||||
X"00", -- 0xC7
|
||||
X"00", -- 0xC8
|
||||
X"00", -- 0xC9
|
||||
X"00", -- 0xCA
|
||||
X"00", -- 0xCB
|
||||
X"00", -- 0xCC
|
||||
X"00", -- 0xCD
|
||||
X"00", -- 0xCE
|
||||
X"00", -- 0xCF
|
||||
X"00", -- 0xD0
|
||||
X"00", -- 0xD1
|
||||
X"00", -- 0xD2
|
||||
X"00", -- 0xD3
|
||||
X"00", -- 0xD4
|
||||
X"00", -- 0xD5
|
||||
X"00", -- 0xD6
|
||||
X"00", -- 0xD7
|
||||
X"00", -- 0xD8
|
||||
X"00", -- 0xD9
|
||||
X"00", -- 0xDA
|
||||
X"00", -- 0xDB
|
||||
X"00", -- 0xDC
|
||||
X"00", -- 0xDD
|
||||
X"00", -- 0xDE
|
||||
X"00", -- 0xDF
|
||||
X"00", -- 0xE0
|
||||
X"00", -- 0xE1
|
||||
X"00", -- 0xE2
|
||||
X"00", -- 0xE3
|
||||
X"00", -- 0xE4
|
||||
X"00", -- 0xE5
|
||||
X"00", -- 0xE6
|
||||
X"00", -- 0xE7
|
||||
X"00", -- 0xE8
|
||||
X"00", -- 0xE9
|
||||
X"00", -- 0xEA
|
||||
X"00", -- 0xEB
|
||||
X"00", -- 0xEC
|
||||
X"00", -- 0xED
|
||||
X"00", -- 0xEE
|
||||
X"00", -- 0xEF
|
||||
X"00", -- 0xF0
|
||||
X"00", -- 0xF1
|
||||
X"00", -- 0xF2
|
||||
X"00", -- 0xF3
|
||||
X"00", -- 0xF4
|
||||
X"00", -- 0xF5
|
||||
X"00", -- 0xF6
|
||||
X"00", -- 0xF7
|
||||
X"00", -- 0xF8
|
||||
X"00", -- 0xF9
|
||||
X"00", -- 0xFA
|
||||
X"00", -- 0xFB
|
||||
X"00", -- 0xFC
|
||||
X"00", -- 0xFD
|
||||
X"00", -- 0xFE
|
||||
X"00" -- 0xFF
|
||||
);
|
||||
|
||||
signal jtag_ld_clk : STD_LOGIC;
|
||||
signal jtag_ld_we : STD_LOGIC;
|
||||
signal jtag_ld_addr : dmem_addr_t;
|
||||
signal jtag_ld_dout : dmem_data_t;
|
||||
signal jtag_ld_din : dmem_data_t;
|
||||
signal bs_rst, bs_sel, bs_shift, bs_tdi, bs_tdo : std_logic;
|
||||
signal bs_capture, bs_clk0, bs_clk1, bs_update0, bs_update1 : std_logic;
|
||||
signal user_regi, user_rego : unsigned (15 downto 0);
|
||||
constant id : unsigned (15 downto 0) := X"BEEF";
|
||||
|
||||
begin
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- Virtex-4: JTAG Loader
|
||||
--------------------------------------------------------------------------
|
||||
i00_BUFG : BUFG
|
||||
port map
|
||||
(
|
||||
O => bs_clk1,
|
||||
I => bs_clk0
|
||||
);
|
||||
|
||||
i01_BUFG : BUFG
|
||||
port map
|
||||
(
|
||||
O => bs_update1,
|
||||
I => bs_update0
|
||||
);
|
||||
|
||||
BSCAN_VIRTEX4_inst2 : BSCAN_VIRTEX4
|
||||
generic map
|
||||
(
|
||||
JTAG_CHAIN => 2 -- Value to set BSCAN site of device. Possible values: (1,2,3 or 4)
|
||||
)
|
||||
port map
|
||||
(
|
||||
CAPTURE => bs_capture, -- CAPTURE output from TAP controller
|
||||
DRCK => bs_clk0, -- Data register output for USER functions
|
||||
RESET => bs_rst, -- Reset output from TAP controller
|
||||
SEL => bs_sel, -- USER active output
|
||||
SHIFT => bs_shift, -- SHIFT output from TAP controller
|
||||
TDI => bs_tdi, -- TDI output from TAP controller
|
||||
UPDATE => bs_update0, -- UPDATE output from TAP controller
|
||||
TDO => bs_tdo -- Data input for USER function
|
||||
);
|
||||
|
||||
jtag_ld_addr <= user_regi(user_regi'left downto user_regi'left-dmem_data_t'length+1);
|
||||
jtag_ld_din <= user_regi(dmem_data_t'left downto 0);
|
||||
jtag_ld_clk <= bs_update1;
|
||||
jtag_ld_we <= bs_sel;
|
||||
|
||||
sipo:
|
||||
process (bs_rst, bs_clk1, bs_tdi, bs_shift)
|
||||
begin
|
||||
if bs_rst = '1' then
|
||||
user_regi <= (others => '0');
|
||||
elsif rising_edge(bs_clk1) then
|
||||
if bs_shift = '1' then
|
||||
user_regi <= bs_tdi & user_regi(user_regi'left downto 1);
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
piso:
|
||||
process (bs_rst, bs_clk1, bs_shift, user_rego)
|
||||
begin
|
||||
bs_tdo <= user_rego(0);
|
||||
if bs_rst = '1' then
|
||||
user_rego <= (others => '0');
|
||||
elsif rising_edge(bs_clk1) then
|
||||
if bs_shift = '1' then
|
||||
user_rego <= user_rego(0) & user_rego(user_rego'left downto 1);
|
||||
else
|
||||
user_rego <= (user_rego'left downto dmem_data_t'length => '0') & jtag_ld_dout;
|
||||
-- user_rego <= id;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- ROM Read/Write
|
||||
--------------------------------------------------------------------------
|
||||
PROM_READ:
|
||||
process(clk, ce)
|
||||
begin
|
||||
if rising_edge(clk) and ce = '1' then
|
||||
dout <= xmem_rom(to_integer(addr));
|
||||
end if;
|
||||
end process;
|
||||
|
||||
PROM_WRITE:
|
||||
process(jtag_ld_clk, jtag_ld_we)
|
||||
begin
|
||||
if rising_edge(jtag_ld_clk) then
|
||||
if jtag_ld_we = '1' then
|
||||
xmem_rom(to_integer(jtag_ld_addr)) <= jtag_ld_din;
|
||||
else
|
||||
jtag_ld_dout <= xmem_rom(to_integer(jtag_ld_addr));
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
end loadable;
|
||||
@@ -0,0 +1,89 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The ROM file for use in your VHDL design
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
-- JASM_ROM_INSERT_HERE
|
||||
ENTITY irom IS
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
addr : in inst_addr_t;
|
||||
dout : out inst_t
|
||||
);
|
||||
END irom;
|
||||
|
||||
ARCHITECTURE reti_issue OF irom IS
|
||||
|
||||
type imem_rom_t is array (0 to 27) of inst_t;
|
||||
|
||||
-- Assembled from reti_issue.jsm
|
||||
constant imem_rom : imem_rom_t :=
|
||||
(
|
||||
"110000" & X"002", -- 0x000: JMP 0x002
|
||||
"111111" & X"000", -- 0x001: RETI
|
||||
"000011" & X"050", -- 0x002: MOV R00, 0x05
|
||||
"100110" & X"030", -- 0x003: COUT (0x03), R00
|
||||
"000011" & X"000", -- 0x004: MOV R00, 0x00
|
||||
"000000" & X"000", -- 0x005: NOP
|
||||
"010001" & X"010", -- 0x006: INC R00
|
||||
"000000" & X"000", -- 0x007: NOP
|
||||
"111011" & X"01B", -- 0x008: CALL 0x01B
|
||||
"000000" & X"000", -- 0x009: NOP
|
||||
"111100" & X"003", -- 0x00A: PUSH R03
|
||||
"000000" & X"000", -- 0x00B: NOP
|
||||
"111100" & X"002", -- 0x00C: PUSH R02
|
||||
"000000" & X"000", -- 0x00D: NOP
|
||||
"111100" & X"001", -- 0x00E: PUSH R01
|
||||
"000000" & X"000", -- 0x00F: NOP
|
||||
"111100" & X"000", -- 0x010: PUSH R00
|
||||
"000000" & X"000", -- 0x011: NOP
|
||||
"111101" & X"000", -- 0x012: POP R00
|
||||
"000000" & X"000", -- 0x013: NOP
|
||||
"111101" & X"001", -- 0x014: POP R01
|
||||
"000000" & X"000", -- 0x015: NOP
|
||||
"111101" & X"002", -- 0x016: POP R02
|
||||
"000000" & X"000", -- 0x017: NOP
|
||||
"111101" & X"003", -- 0x018: POP R03
|
||||
"000000" & X"000", -- 0x019: NOP
|
||||
"110000" & X"005", -- 0x01A: JMP 0x005
|
||||
"111110" & X"000" -- 0x01B: RET
|
||||
);
|
||||
|
||||
begin
|
||||
|
||||
PROM_READ:
|
||||
process(clk, ce)
|
||||
begin
|
||||
if rising_edge(clk) and ce = '1' then
|
||||
dout <= imem_rom(to_integer(addr));
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end reti_issue;
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,317 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The ROM file for use in your VHDL design
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
-- JASM_ROM_INSERT_HERE
|
||||
ENTITY xrom IS
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
addr : in dmem_addr_t;
|
||||
dout : out dmem_data_t
|
||||
);
|
||||
END xrom;
|
||||
|
||||
ARCHITECTURE reti_issue OF xrom IS
|
||||
|
||||
type xmem_rom_t is array (0 to 255) of dmem_data_t;
|
||||
|
||||
-- Assembled from reti_issue.jsm
|
||||
constant xmem_rom : xmem_rom_t :=
|
||||
(
|
||||
X"00", -- 0x00
|
||||
X"00", -- 0x01
|
||||
X"00", -- 0x02
|
||||
X"00", -- 0x03
|
||||
X"00", -- 0x04
|
||||
X"00", -- 0x05
|
||||
X"00", -- 0x06
|
||||
X"00", -- 0x07
|
||||
X"00", -- 0x08
|
||||
X"00", -- 0x09
|
||||
X"00", -- 0x0A
|
||||
X"00", -- 0x0B
|
||||
X"00", -- 0x0C
|
||||
X"00", -- 0x0D
|
||||
X"00", -- 0x0E
|
||||
X"00", -- 0x0F
|
||||
X"00", -- 0x10
|
||||
X"00", -- 0x11
|
||||
X"00", -- 0x12
|
||||
X"00", -- 0x13
|
||||
X"00", -- 0x14
|
||||
X"00", -- 0x15
|
||||
X"00", -- 0x16
|
||||
X"00", -- 0x17
|
||||
X"00", -- 0x18
|
||||
X"00", -- 0x19
|
||||
X"00", -- 0x1A
|
||||
X"00", -- 0x1B
|
||||
X"00", -- 0x1C
|
||||
X"00", -- 0x1D
|
||||
X"00", -- 0x1E
|
||||
X"00", -- 0x1F
|
||||
X"00", -- 0x20
|
||||
X"00", -- 0x21
|
||||
X"00", -- 0x22
|
||||
X"00", -- 0x23
|
||||
X"00", -- 0x24
|
||||
X"00", -- 0x25
|
||||
X"00", -- 0x26
|
||||
X"00", -- 0x27
|
||||
X"00", -- 0x28
|
||||
X"00", -- 0x29
|
||||
X"00", -- 0x2A
|
||||
X"00", -- 0x2B
|
||||
X"00", -- 0x2C
|
||||
X"00", -- 0x2D
|
||||
X"00", -- 0x2E
|
||||
X"00", -- 0x2F
|
||||
X"00", -- 0x30
|
||||
X"00", -- 0x31
|
||||
X"00", -- 0x32
|
||||
X"00", -- 0x33
|
||||
X"00", -- 0x34
|
||||
X"00", -- 0x35
|
||||
X"00", -- 0x36
|
||||
X"00", -- 0x37
|
||||
X"00", -- 0x38
|
||||
X"00", -- 0x39
|
||||
X"00", -- 0x3A
|
||||
X"00", -- 0x3B
|
||||
X"00", -- 0x3C
|
||||
X"00", -- 0x3D
|
||||
X"00", -- 0x3E
|
||||
X"00", -- 0x3F
|
||||
X"00", -- 0x40
|
||||
X"00", -- 0x41
|
||||
X"00", -- 0x42
|
||||
X"00", -- 0x43
|
||||
X"00", -- 0x44
|
||||
X"00", -- 0x45
|
||||
X"00", -- 0x46
|
||||
X"00", -- 0x47
|
||||
X"00", -- 0x48
|
||||
X"00", -- 0x49
|
||||
X"00", -- 0x4A
|
||||
X"00", -- 0x4B
|
||||
X"00", -- 0x4C
|
||||
X"00", -- 0x4D
|
||||
X"00", -- 0x4E
|
||||
X"00", -- 0x4F
|
||||
X"00", -- 0x50
|
||||
X"00", -- 0x51
|
||||
X"00", -- 0x52
|
||||
X"00", -- 0x53
|
||||
X"00", -- 0x54
|
||||
X"00", -- 0x55
|
||||
X"00", -- 0x56
|
||||
X"00", -- 0x57
|
||||
X"00", -- 0x58
|
||||
X"00", -- 0x59
|
||||
X"00", -- 0x5A
|
||||
X"00", -- 0x5B
|
||||
X"00", -- 0x5C
|
||||
X"00", -- 0x5D
|
||||
X"00", -- 0x5E
|
||||
X"00", -- 0x5F
|
||||
X"00", -- 0x60
|
||||
X"00", -- 0x61
|
||||
X"00", -- 0x62
|
||||
X"00", -- 0x63
|
||||
X"00", -- 0x64
|
||||
X"00", -- 0x65
|
||||
X"00", -- 0x66
|
||||
X"00", -- 0x67
|
||||
X"00", -- 0x68
|
||||
X"00", -- 0x69
|
||||
X"00", -- 0x6A
|
||||
X"00", -- 0x6B
|
||||
X"00", -- 0x6C
|
||||
X"00", -- 0x6D
|
||||
X"00", -- 0x6E
|
||||
X"00", -- 0x6F
|
||||
X"00", -- 0x70
|
||||
X"00", -- 0x71
|
||||
X"00", -- 0x72
|
||||
X"00", -- 0x73
|
||||
X"00", -- 0x74
|
||||
X"00", -- 0x75
|
||||
X"00", -- 0x76
|
||||
X"00", -- 0x77
|
||||
X"00", -- 0x78
|
||||
X"00", -- 0x79
|
||||
X"00", -- 0x7A
|
||||
X"00", -- 0x7B
|
||||
X"00", -- 0x7C
|
||||
X"00", -- 0x7D
|
||||
X"00", -- 0x7E
|
||||
X"00", -- 0x7F
|
||||
X"00", -- 0x80
|
||||
X"00", -- 0x81
|
||||
X"00", -- 0x82
|
||||
X"00", -- 0x83
|
||||
X"00", -- 0x84
|
||||
X"00", -- 0x85
|
||||
X"00", -- 0x86
|
||||
X"00", -- 0x87
|
||||
X"00", -- 0x88
|
||||
X"00", -- 0x89
|
||||
X"00", -- 0x8A
|
||||
X"00", -- 0x8B
|
||||
X"00", -- 0x8C
|
||||
X"00", -- 0x8D
|
||||
X"00", -- 0x8E
|
||||
X"00", -- 0x8F
|
||||
X"00", -- 0x90
|
||||
X"00", -- 0x91
|
||||
X"00", -- 0x92
|
||||
X"00", -- 0x93
|
||||
X"00", -- 0x94
|
||||
X"00", -- 0x95
|
||||
X"00", -- 0x96
|
||||
X"00", -- 0x97
|
||||
X"00", -- 0x98
|
||||
X"00", -- 0x99
|
||||
X"00", -- 0x9A
|
||||
X"00", -- 0x9B
|
||||
X"00", -- 0x9C
|
||||
X"00", -- 0x9D
|
||||
X"00", -- 0x9E
|
||||
X"00", -- 0x9F
|
||||
X"00", -- 0xA0
|
||||
X"00", -- 0xA1
|
||||
X"00", -- 0xA2
|
||||
X"00", -- 0xA3
|
||||
X"00", -- 0xA4
|
||||
X"00", -- 0xA5
|
||||
X"00", -- 0xA6
|
||||
X"00", -- 0xA7
|
||||
X"00", -- 0xA8
|
||||
X"00", -- 0xA9
|
||||
X"00", -- 0xAA
|
||||
X"00", -- 0xAB
|
||||
X"00", -- 0xAC
|
||||
X"00", -- 0xAD
|
||||
X"00", -- 0xAE
|
||||
X"00", -- 0xAF
|
||||
X"00", -- 0xB0
|
||||
X"00", -- 0xB1
|
||||
X"00", -- 0xB2
|
||||
X"00", -- 0xB3
|
||||
X"00", -- 0xB4
|
||||
X"00", -- 0xB5
|
||||
X"00", -- 0xB6
|
||||
X"00", -- 0xB7
|
||||
X"00", -- 0xB8
|
||||
X"00", -- 0xB9
|
||||
X"00", -- 0xBA
|
||||
X"00", -- 0xBB
|
||||
X"00", -- 0xBC
|
||||
X"00", -- 0xBD
|
||||
X"00", -- 0xBE
|
||||
X"00", -- 0xBF
|
||||
X"00", -- 0xC0
|
||||
X"00", -- 0xC1
|
||||
X"00", -- 0xC2
|
||||
X"00", -- 0xC3
|
||||
X"00", -- 0xC4
|
||||
X"00", -- 0xC5
|
||||
X"00", -- 0xC6
|
||||
X"00", -- 0xC7
|
||||
X"00", -- 0xC8
|
||||
X"00", -- 0xC9
|
||||
X"00", -- 0xCA
|
||||
X"00", -- 0xCB
|
||||
X"00", -- 0xCC
|
||||
X"00", -- 0xCD
|
||||
X"00", -- 0xCE
|
||||
X"00", -- 0xCF
|
||||
X"00", -- 0xD0
|
||||
X"00", -- 0xD1
|
||||
X"00", -- 0xD2
|
||||
X"00", -- 0xD3
|
||||
X"00", -- 0xD4
|
||||
X"00", -- 0xD5
|
||||
X"00", -- 0xD6
|
||||
X"00", -- 0xD7
|
||||
X"00", -- 0xD8
|
||||
X"00", -- 0xD9
|
||||
X"00", -- 0xDA
|
||||
X"00", -- 0xDB
|
||||
X"00", -- 0xDC
|
||||
X"00", -- 0xDD
|
||||
X"00", -- 0xDE
|
||||
X"00", -- 0xDF
|
||||
X"00", -- 0xE0
|
||||
X"00", -- 0xE1
|
||||
X"00", -- 0xE2
|
||||
X"00", -- 0xE3
|
||||
X"00", -- 0xE4
|
||||
X"00", -- 0xE5
|
||||
X"00", -- 0xE6
|
||||
X"00", -- 0xE7
|
||||
X"00", -- 0xE8
|
||||
X"00", -- 0xE9
|
||||
X"00", -- 0xEA
|
||||
X"00", -- 0xEB
|
||||
X"00", -- 0xEC
|
||||
X"00", -- 0xED
|
||||
X"00", -- 0xEE
|
||||
X"00", -- 0xEF
|
||||
X"00", -- 0xF0
|
||||
X"00", -- 0xF1
|
||||
X"00", -- 0xF2
|
||||
X"00", -- 0xF3
|
||||
X"00", -- 0xF4
|
||||
X"00", -- 0xF5
|
||||
X"00", -- 0xF6
|
||||
X"00", -- 0xF7
|
||||
X"00", -- 0xF8
|
||||
X"00", -- 0xF9
|
||||
X"00", -- 0xFA
|
||||
X"00", -- 0xFB
|
||||
X"00", -- 0xFC
|
||||
X"00", -- 0xFD
|
||||
X"00", -- 0xFE
|
||||
X"00" -- 0xFF
|
||||
);
|
||||
|
||||
begin
|
||||
|
||||
PROM_READ:
|
||||
process(clk, ce)
|
||||
begin
|
||||
if rising_edge(clk) and ce = '1' then
|
||||
dout <= xmem_rom(to_integer(addr));
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end reti_issue;
|
||||
|
||||
@@ -0,0 +1,413 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: loadable ROM
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library UNISIM;
|
||||
use UNISIM.VComponents.all;
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
ENTITY xrom IS
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
addr : in dmem_addr_t;
|
||||
dout : out dmem_data_t
|
||||
);
|
||||
|
||||
END xrom;
|
||||
|
||||
ARCHITECTURE loadable OF xrom IS
|
||||
|
||||
-- JASM_ROM_INSERT_HERE
|
||||
|
||||
-- Assembled from reti_issue.jsm
|
||||
type xmem_rom_t is array (0 to 255) of dmem_data_t;
|
||||
signal xmem_rom : xmem_rom_t :=
|
||||
(
|
||||
X"00", -- 0x00
|
||||
X"00", -- 0x01
|
||||
X"00", -- 0x02
|
||||
X"00", -- 0x03
|
||||
X"00", -- 0x04
|
||||
X"00", -- 0x05
|
||||
X"00", -- 0x06
|
||||
X"00", -- 0x07
|
||||
X"00", -- 0x08
|
||||
X"00", -- 0x09
|
||||
X"00", -- 0x0A
|
||||
X"00", -- 0x0B
|
||||
X"00", -- 0x0C
|
||||
X"00", -- 0x0D
|
||||
X"00", -- 0x0E
|
||||
X"00", -- 0x0F
|
||||
X"00", -- 0x10
|
||||
X"00", -- 0x11
|
||||
X"00", -- 0x12
|
||||
X"00", -- 0x13
|
||||
X"00", -- 0x14
|
||||
X"00", -- 0x15
|
||||
X"00", -- 0x16
|
||||
X"00", -- 0x17
|
||||
X"00", -- 0x18
|
||||
X"00", -- 0x19
|
||||
X"00", -- 0x1A
|
||||
X"00", -- 0x1B
|
||||
X"00", -- 0x1C
|
||||
X"00", -- 0x1D
|
||||
X"00", -- 0x1E
|
||||
X"00", -- 0x1F
|
||||
X"00", -- 0x20
|
||||
X"00", -- 0x21
|
||||
X"00", -- 0x22
|
||||
X"00", -- 0x23
|
||||
X"00", -- 0x24
|
||||
X"00", -- 0x25
|
||||
X"00", -- 0x26
|
||||
X"00", -- 0x27
|
||||
X"00", -- 0x28
|
||||
X"00", -- 0x29
|
||||
X"00", -- 0x2A
|
||||
X"00", -- 0x2B
|
||||
X"00", -- 0x2C
|
||||
X"00", -- 0x2D
|
||||
X"00", -- 0x2E
|
||||
X"00", -- 0x2F
|
||||
X"00", -- 0x30
|
||||
X"00", -- 0x31
|
||||
X"00", -- 0x32
|
||||
X"00", -- 0x33
|
||||
X"00", -- 0x34
|
||||
X"00", -- 0x35
|
||||
X"00", -- 0x36
|
||||
X"00", -- 0x37
|
||||
X"00", -- 0x38
|
||||
X"00", -- 0x39
|
||||
X"00", -- 0x3A
|
||||
X"00", -- 0x3B
|
||||
X"00", -- 0x3C
|
||||
X"00", -- 0x3D
|
||||
X"00", -- 0x3E
|
||||
X"00", -- 0x3F
|
||||
X"00", -- 0x40
|
||||
X"00", -- 0x41
|
||||
X"00", -- 0x42
|
||||
X"00", -- 0x43
|
||||
X"00", -- 0x44
|
||||
X"00", -- 0x45
|
||||
X"00", -- 0x46
|
||||
X"00", -- 0x47
|
||||
X"00", -- 0x48
|
||||
X"00", -- 0x49
|
||||
X"00", -- 0x4A
|
||||
X"00", -- 0x4B
|
||||
X"00", -- 0x4C
|
||||
X"00", -- 0x4D
|
||||
X"00", -- 0x4E
|
||||
X"00", -- 0x4F
|
||||
X"00", -- 0x50
|
||||
X"00", -- 0x51
|
||||
X"00", -- 0x52
|
||||
X"00", -- 0x53
|
||||
X"00", -- 0x54
|
||||
X"00", -- 0x55
|
||||
X"00", -- 0x56
|
||||
X"00", -- 0x57
|
||||
X"00", -- 0x58
|
||||
X"00", -- 0x59
|
||||
X"00", -- 0x5A
|
||||
X"00", -- 0x5B
|
||||
X"00", -- 0x5C
|
||||
X"00", -- 0x5D
|
||||
X"00", -- 0x5E
|
||||
X"00", -- 0x5F
|
||||
X"00", -- 0x60
|
||||
X"00", -- 0x61
|
||||
X"00", -- 0x62
|
||||
X"00", -- 0x63
|
||||
X"00", -- 0x64
|
||||
X"00", -- 0x65
|
||||
X"00", -- 0x66
|
||||
X"00", -- 0x67
|
||||
X"00", -- 0x68
|
||||
X"00", -- 0x69
|
||||
X"00", -- 0x6A
|
||||
X"00", -- 0x6B
|
||||
X"00", -- 0x6C
|
||||
X"00", -- 0x6D
|
||||
X"00", -- 0x6E
|
||||
X"00", -- 0x6F
|
||||
X"00", -- 0x70
|
||||
X"00", -- 0x71
|
||||
X"00", -- 0x72
|
||||
X"00", -- 0x73
|
||||
X"00", -- 0x74
|
||||
X"00", -- 0x75
|
||||
X"00", -- 0x76
|
||||
X"00", -- 0x77
|
||||
X"00", -- 0x78
|
||||
X"00", -- 0x79
|
||||
X"00", -- 0x7A
|
||||
X"00", -- 0x7B
|
||||
X"00", -- 0x7C
|
||||
X"00", -- 0x7D
|
||||
X"00", -- 0x7E
|
||||
X"00", -- 0x7F
|
||||
X"00", -- 0x80
|
||||
X"00", -- 0x81
|
||||
X"00", -- 0x82
|
||||
X"00", -- 0x83
|
||||
X"00", -- 0x84
|
||||
X"00", -- 0x85
|
||||
X"00", -- 0x86
|
||||
X"00", -- 0x87
|
||||
X"00", -- 0x88
|
||||
X"00", -- 0x89
|
||||
X"00", -- 0x8A
|
||||
X"00", -- 0x8B
|
||||
X"00", -- 0x8C
|
||||
X"00", -- 0x8D
|
||||
X"00", -- 0x8E
|
||||
X"00", -- 0x8F
|
||||
X"00", -- 0x90
|
||||
X"00", -- 0x91
|
||||
X"00", -- 0x92
|
||||
X"00", -- 0x93
|
||||
X"00", -- 0x94
|
||||
X"00", -- 0x95
|
||||
X"00", -- 0x96
|
||||
X"00", -- 0x97
|
||||
X"00", -- 0x98
|
||||
X"00", -- 0x99
|
||||
X"00", -- 0x9A
|
||||
X"00", -- 0x9B
|
||||
X"00", -- 0x9C
|
||||
X"00", -- 0x9D
|
||||
X"00", -- 0x9E
|
||||
X"00", -- 0x9F
|
||||
X"00", -- 0xA0
|
||||
X"00", -- 0xA1
|
||||
X"00", -- 0xA2
|
||||
X"00", -- 0xA3
|
||||
X"00", -- 0xA4
|
||||
X"00", -- 0xA5
|
||||
X"00", -- 0xA6
|
||||
X"00", -- 0xA7
|
||||
X"00", -- 0xA8
|
||||
X"00", -- 0xA9
|
||||
X"00", -- 0xAA
|
||||
X"00", -- 0xAB
|
||||
X"00", -- 0xAC
|
||||
X"00", -- 0xAD
|
||||
X"00", -- 0xAE
|
||||
X"00", -- 0xAF
|
||||
X"00", -- 0xB0
|
||||
X"00", -- 0xB1
|
||||
X"00", -- 0xB2
|
||||
X"00", -- 0xB3
|
||||
X"00", -- 0xB4
|
||||
X"00", -- 0xB5
|
||||
X"00", -- 0xB6
|
||||
X"00", -- 0xB7
|
||||
X"00", -- 0xB8
|
||||
X"00", -- 0xB9
|
||||
X"00", -- 0xBA
|
||||
X"00", -- 0xBB
|
||||
X"00", -- 0xBC
|
||||
X"00", -- 0xBD
|
||||
X"00", -- 0xBE
|
||||
X"00", -- 0xBF
|
||||
X"00", -- 0xC0
|
||||
X"00", -- 0xC1
|
||||
X"00", -- 0xC2
|
||||
X"00", -- 0xC3
|
||||
X"00", -- 0xC4
|
||||
X"00", -- 0xC5
|
||||
X"00", -- 0xC6
|
||||
X"00", -- 0xC7
|
||||
X"00", -- 0xC8
|
||||
X"00", -- 0xC9
|
||||
X"00", -- 0xCA
|
||||
X"00", -- 0xCB
|
||||
X"00", -- 0xCC
|
||||
X"00", -- 0xCD
|
||||
X"00", -- 0xCE
|
||||
X"00", -- 0xCF
|
||||
X"00", -- 0xD0
|
||||
X"00", -- 0xD1
|
||||
X"00", -- 0xD2
|
||||
X"00", -- 0xD3
|
||||
X"00", -- 0xD4
|
||||
X"00", -- 0xD5
|
||||
X"00", -- 0xD6
|
||||
X"00", -- 0xD7
|
||||
X"00", -- 0xD8
|
||||
X"00", -- 0xD9
|
||||
X"00", -- 0xDA
|
||||
X"00", -- 0xDB
|
||||
X"00", -- 0xDC
|
||||
X"00", -- 0xDD
|
||||
X"00", -- 0xDE
|
||||
X"00", -- 0xDF
|
||||
X"00", -- 0xE0
|
||||
X"00", -- 0xE1
|
||||
X"00", -- 0xE2
|
||||
X"00", -- 0xE3
|
||||
X"00", -- 0xE4
|
||||
X"00", -- 0xE5
|
||||
X"00", -- 0xE6
|
||||
X"00", -- 0xE7
|
||||
X"00", -- 0xE8
|
||||
X"00", -- 0xE9
|
||||
X"00", -- 0xEA
|
||||
X"00", -- 0xEB
|
||||
X"00", -- 0xEC
|
||||
X"00", -- 0xED
|
||||
X"00", -- 0xEE
|
||||
X"00", -- 0xEF
|
||||
X"00", -- 0xF0
|
||||
X"00", -- 0xF1
|
||||
X"00", -- 0xF2
|
||||
X"00", -- 0xF3
|
||||
X"00", -- 0xF4
|
||||
X"00", -- 0xF5
|
||||
X"00", -- 0xF6
|
||||
X"00", -- 0xF7
|
||||
X"00", -- 0xF8
|
||||
X"00", -- 0xF9
|
||||
X"00", -- 0xFA
|
||||
X"00", -- 0xFB
|
||||
X"00", -- 0xFC
|
||||
X"00", -- 0xFD
|
||||
X"00", -- 0xFE
|
||||
X"00" -- 0xFF
|
||||
);
|
||||
|
||||
signal jtag_ld_clk : STD_LOGIC;
|
||||
signal jtag_ld_we : STD_LOGIC;
|
||||
signal jtag_ld_addr : dmem_addr_t;
|
||||
signal jtag_ld_dout : dmem_data_t;
|
||||
signal jtag_ld_din : dmem_data_t;
|
||||
signal bs_rst, bs_sel, bs_shift, bs_tdi, bs_tdo : std_logic;
|
||||
signal bs_capture, bs_clk0, bs_clk1, bs_update0, bs_update1 : std_logic;
|
||||
signal user_regi, user_rego : unsigned (15 downto 0);
|
||||
constant id : unsigned (15 downto 0) := X"BEEF";
|
||||
|
||||
begin
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- Virtex-4: JTAG Loader
|
||||
--------------------------------------------------------------------------
|
||||
i00_BUFG : BUFG
|
||||
port map
|
||||
(
|
||||
O => bs_clk1,
|
||||
I => bs_clk0
|
||||
);
|
||||
|
||||
i01_BUFG : BUFG
|
||||
port map
|
||||
(
|
||||
O => bs_update1,
|
||||
I => bs_update0
|
||||
);
|
||||
|
||||
BSCAN_VIRTEX4_inst2 : BSCAN_VIRTEX4
|
||||
generic map
|
||||
(
|
||||
JTAG_CHAIN => 2 -- Value to set BSCAN site of device. Possible values: (1,2,3 or 4)
|
||||
)
|
||||
port map
|
||||
(
|
||||
CAPTURE => bs_capture, -- CAPTURE output from TAP controller
|
||||
DRCK => bs_clk0, -- Data register output for USER functions
|
||||
RESET => bs_rst, -- Reset output from TAP controller
|
||||
SEL => bs_sel, -- USER active output
|
||||
SHIFT => bs_shift, -- SHIFT output from TAP controller
|
||||
TDI => bs_tdi, -- TDI output from TAP controller
|
||||
UPDATE => bs_update0, -- UPDATE output from TAP controller
|
||||
TDO => bs_tdo -- Data input for USER function
|
||||
);
|
||||
|
||||
jtag_ld_addr <= user_regi(user_regi'left downto user_regi'left-dmem_data_t'length+1);
|
||||
jtag_ld_din <= user_regi(dmem_data_t'left downto 0);
|
||||
jtag_ld_clk <= bs_update1;
|
||||
jtag_ld_we <= bs_sel;
|
||||
|
||||
sipo:
|
||||
process (bs_rst, bs_clk1, bs_tdi, bs_shift)
|
||||
begin
|
||||
if bs_rst = '1' then
|
||||
user_regi <= (others => '0');
|
||||
elsif rising_edge(bs_clk1) then
|
||||
if bs_shift = '1' then
|
||||
user_regi <= bs_tdi & user_regi(user_regi'left downto 1);
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
piso:
|
||||
process (bs_rst, bs_clk1, bs_shift, user_rego)
|
||||
begin
|
||||
bs_tdo <= user_rego(0);
|
||||
if bs_rst = '1' then
|
||||
user_rego <= (others => '0');
|
||||
elsif rising_edge(bs_clk1) then
|
||||
if bs_shift = '1' then
|
||||
user_rego <= user_rego(0) & user_rego(user_rego'left downto 1);
|
||||
else
|
||||
user_rego <= (user_rego'left downto dmem_data_t'length => '0') & jtag_ld_dout;
|
||||
-- user_rego <= id;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- ROM Read/Write
|
||||
--------------------------------------------------------------------------
|
||||
PROM_READ:
|
||||
process(clk, ce)
|
||||
begin
|
||||
if rising_edge(clk) and ce = '1' then
|
||||
dout <= xmem_rom(to_integer(addr));
|
||||
end if;
|
||||
end process;
|
||||
|
||||
PROM_WRITE:
|
||||
process(jtag_ld_clk, jtag_ld_we)
|
||||
begin
|
||||
if rising_edge(jtag_ld_clk) then
|
||||
if jtag_ld_we = '1' then
|
||||
xmem_rom(to_integer(jtag_ld_addr)) <= jtag_ld_din;
|
||||
else
|
||||
jtag_ld_dout <= xmem_rom(to_integer(jtag_ld_addr));
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
end loadable;
|
||||
@@ -0,0 +1,129 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: testbench for embedded cpu with rom
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
use std.textio.all; -- Imports the standard textio package.
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
ENTITY tb_cpu_embedded IS
|
||||
END tb_cpu_embedded;
|
||||
|
||||
ARCHITECTURE behavior OF tb_cpu_embedded IS
|
||||
|
||||
COMPONENT cpu_embedded
|
||||
Port (
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
int_in : in STD_LOGIC;
|
||||
int_ack : out STD_LOGIC;
|
||||
xmem_wait : in STD_LOGIC;
|
||||
xmem_we : out STD_LOGIC;
|
||||
xmem_re : out STD_LOGIC;
|
||||
xmem_din : in unsigned (DMEM_DATA_WIDTH-1 downto 0);
|
||||
xmem_dout : out unsigned (DMEM_DATA_WIDTH-1 downto 0);
|
||||
xmem_addr : out unsigned (DMEM_ADDR_WIDTH-1 downto 0);
|
||||
io_sel : out STD_LOGIC
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
constant CLK_PERIOD : time := 10 ns;
|
||||
type sram_t is array (integer range <>) of dmem_data_t;
|
||||
signal rst : std_logic := '1';
|
||||
signal clk : std_logic := '1';
|
||||
signal ce : std_logic := '0';
|
||||
signal int_in : std_logic := '0';
|
||||
signal int_ack : std_logic;
|
||||
signal xmem_wait : std_logic := '0';
|
||||
signal xmem_din : dmem_data_t := (others => '-');
|
||||
signal xmem_dout : dmem_data_t;
|
||||
signal xmem_addr : dmem_addr_t;
|
||||
signal xmem_we : std_logic;
|
||||
signal xmem_re : std_logic;
|
||||
signal io_sel : std_logic;
|
||||
signal sram : sram_t(0 to 2**dmem_addr_t'length-1);
|
||||
|
||||
|
||||
BEGIN
|
||||
|
||||
uut: cpu_embedded
|
||||
PORT MAP(
|
||||
rst => rst,
|
||||
clk => clk,
|
||||
ce => ce,
|
||||
int_in => int_in,
|
||||
int_ack => int_ack,
|
||||
xmem_wait => xmem_wait,
|
||||
xmem_we => xmem_we,
|
||||
xmem_re => xmem_re,
|
||||
xmem_din => xmem_din,
|
||||
xmem_dout => xmem_dout,
|
||||
xmem_addr => xmem_addr,
|
||||
io_sel => io_sel
|
||||
);
|
||||
|
||||
CLK_GEN: process
|
||||
begin
|
||||
wait for CLK_PERIOD/2;
|
||||
clk <= not clk;
|
||||
end process;
|
||||
|
||||
STIMULUS: process
|
||||
|
||||
begin
|
||||
|
||||
wait for 3*CLK_PERIOD;
|
||||
rst <= '0';
|
||||
wait for 2*CLK_PERIOD;
|
||||
|
||||
wait until rising_edge(clk);
|
||||
ce <= '1';
|
||||
|
||||
wait for 1000*CLK_PERIOD;
|
||||
|
||||
assert false report "Test finished" severity error;
|
||||
wait;
|
||||
|
||||
end process;
|
||||
|
||||
SRAM_RW: process(rst, clk, xmem_addr, xmem_dout, xmem_we)
|
||||
begin
|
||||
if (rst = '1') then
|
||||
xmem_din <= X"00";
|
||||
elsif rising_edge(clk) then
|
||||
if io_sel = '0' then
|
||||
if xmem_we = '1' then
|
||||
sram(to_integer(xmem_addr)) <= xmem_dout;
|
||||
end if;
|
||||
xmem_din <= to_01(sram(to_integer(xmem_addr)));
|
||||
else
|
||||
xmem_din <= X"FF";
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
END;
|
||||
@@ -0,0 +1,218 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: Formal test of correct function of JCPU,
|
||||
-- also writes 'opc.lst' for JASM-assembler
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
use std.textio.all; -- Imports the standard textio package.
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
use work.PCK_FIO.all;
|
||||
|
||||
ENTITY tb_cpu IS
|
||||
END tb_cpu;
|
||||
|
||||
ARCHITECTURE behavior OF tb_cpu IS
|
||||
|
||||
COMPONENT cpu
|
||||
Generic (
|
||||
use_instr_register : boolean;
|
||||
use_ctrl_rom : boolean
|
||||
);
|
||||
Port (
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
int_in : in STD_LOGIC;
|
||||
int_ack : out STD_LOGIC;
|
||||
xmem_wait : in STD_LOGIC;
|
||||
xmem_we : out STD_LOGIC;
|
||||
xmem_re : out STD_LOGIC;
|
||||
instr_din : in unsigned (IMEM_DATA_WIDTH-1 downto 0);
|
||||
instr_addr : out unsigned (IMEM_ADDR_WIDTH-1 downto 0);
|
||||
xmem_din : in unsigned (DMEM_DATA_WIDTH-1 downto 0);
|
||||
xmem_dout : out unsigned (DMEM_DATA_WIDTH-1 downto 0);
|
||||
xmem_addr : out unsigned (DMEM_DATA_WIDTH-1 downto 0);
|
||||
io_sel : out STD_LOGIC
|
||||
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
COMPONENT irom
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
addr : in inst_addr_t;
|
||||
dout : out inst_t
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
constant CLK_PERIOD : time := 10 ns;
|
||||
type prom_t is array (integer range <>) of inst_t;
|
||||
type sram_t is array (integer range <>) of dmem_data_t;
|
||||
signal rst : std_logic := '1';
|
||||
signal clk : std_logic := '1';
|
||||
signal ce : std_logic := '0';
|
||||
signal int_in : std_logic := '0';
|
||||
signal int_ack : std_logic;
|
||||
signal xmem_wait : std_logic := '1';
|
||||
signal irom_data : unsigned (IMEM_DATA_WIDTH-1 downto 0) := (others => '-');
|
||||
signal irom_addr : unsigned (IMEM_ADDR_WIDTH-1 downto 0);
|
||||
signal xmem_din : dmem_data_t := (others => '-');
|
||||
signal xmem_dout : dmem_data_t;
|
||||
signal xmem_addr : unsigned (DMEM_DATA_WIDTH-1 downto 0);
|
||||
signal xmem_we : std_logic;
|
||||
signal xmem_re : std_logic;
|
||||
signal io_sel : std_logic;
|
||||
signal sram : sram_t(0 to 2**DMEM_DATA_WIDTH-1);
|
||||
|
||||
type reg_t is record
|
||||
revision : dmem_data_t;
|
||||
testid : dmem_data_t;
|
||||
interrupt : std_logic;
|
||||
end record;
|
||||
|
||||
signal reg : reg_t;
|
||||
|
||||
|
||||
BEGIN
|
||||
|
||||
int_in <= reg.interrupt;
|
||||
uut: cpu
|
||||
GENERIC MAP
|
||||
(
|
||||
use_instr_register => false,
|
||||
use_ctrl_rom => true
|
||||
)
|
||||
PORT MAP(
|
||||
rst => rst,
|
||||
clk => clk,
|
||||
ce => ce,
|
||||
int_in => int_in,
|
||||
int_ack => int_ack,
|
||||
xmem_wait => xmem_wait,
|
||||
xmem_we => xmem_we,
|
||||
xmem_re => xmem_re,
|
||||
instr_din => irom_data,
|
||||
instr_addr => irom_addr,
|
||||
xmem_din => xmem_din,
|
||||
xmem_dout => xmem_dout,
|
||||
xmem_addr => xmem_addr,
|
||||
io_sel => io_sel
|
||||
);
|
||||
|
||||
the_irom: irom
|
||||
PORT MAP(
|
||||
clk => clk,
|
||||
ce => ce,
|
||||
addr => irom_addr,
|
||||
dout => irom_data
|
||||
);
|
||||
|
||||
CLK_GEN: process
|
||||
begin
|
||||
wait for CLK_PERIOD/2;
|
||||
clk <= not clk;
|
||||
end process;
|
||||
|
||||
XWAIT_GEN:process(rst, clk)
|
||||
variable cnt : unsigned(3 downto 0);
|
||||
begin
|
||||
if (rst = '1') then
|
||||
cnt := (others => '1');
|
||||
elsif rising_edge(clk) then
|
||||
if cnt /= "0000" then
|
||||
cnt := cnt - 1;
|
||||
else
|
||||
cnt := (others => '1');
|
||||
xmem_wait <= not xmem_wait;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
STIMULUS: process
|
||||
file RESULT: text open write_mode is "../tools/opc.list";
|
||||
variable L: line;
|
||||
|
||||
begin
|
||||
|
||||
for i in 0 to instr_name_array'length-1 loop
|
||||
fprint(RESULT, L,"%d %s\n", fo(i), instr_name_array(i));
|
||||
end loop;
|
||||
|
||||
wait for 3*CLK_PERIOD;
|
||||
rst <= '0';
|
||||
wait for 2*CLK_PERIOD;
|
||||
|
||||
wait until rising_edge(clk);
|
||||
ce <= '1';
|
||||
|
||||
assert false report "Test finished" severity error;
|
||||
wait;
|
||||
|
||||
end process;
|
||||
|
||||
SRAM_RW: process(rst, clk)
|
||||
begin
|
||||
if (rst = '1') then
|
||||
reg.revision <= (others => '0');
|
||||
reg.testid <= (others => '0');
|
||||
reg.interrupt <= '0';
|
||||
elsif rising_edge(clk) then
|
||||
if int_ack = '1' then
|
||||
-- reg.interrupt <= '0';
|
||||
end if;
|
||||
if xmem_we = '1' then
|
||||
if io_sel = '0' then
|
||||
sram(to_integer(xmem_addr)) <= xmem_dout;
|
||||
else
|
||||
case xmem_addr is
|
||||
when X"00" =>
|
||||
reg.revision <= xmem_dout;
|
||||
when X"01" =>
|
||||
reg.testid <= xmem_dout;
|
||||
when X"02" =>
|
||||
reg.interrupt <= xmem_dout(0);
|
||||
when others => null;
|
||||
end case;
|
||||
end if;
|
||||
else
|
||||
if io_sel = '0' then
|
||||
xmem_din <= to_01(sram(to_integer(xmem_addr)));
|
||||
else
|
||||
case xmem_addr is
|
||||
when X"00" =>
|
||||
xmem_din <= reg.revision;
|
||||
when X"01" =>
|
||||
xmem_din <= reg.testid;
|
||||
when others =>
|
||||
xmem_din <= X"BC";
|
||||
end case;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
END;
|
||||
@@ -0,0 +1,10 @@
|
||||
vhdl work "W:\vhdl\lib\CPUs\JCpu\src\core\cpu_pkg.vhd"
|
||||
vhdl work "W:\vhdl\lib\CPUs\JCpu\src\core\stack_ctrl.vhd"
|
||||
vhdl work "W:\vhdl\lib\CPUs\JCpu\src\core\reg_dual.vhd"
|
||||
vhdl work "W:\vhdl\lib\CPUs\JCpu\src\core\pc.vhd"
|
||||
vhdl work "W:\vhdl\lib\CPUs\JCpu\src\core\int_ctrl.vhd"
|
||||
vhdl work "W:\vhdl\lib\CPUs\JCpu\src\core\dpath_ctrl.vhd"
|
||||
vhdl work "W:\vhdl\lib\CPUs\JCpu\src\core\chipreg.vhd"
|
||||
vhdl work "W:\vhdl\lib\CPUs\JCpu\src\core\chipram.vhd"
|
||||
vhdl work "W:\vhdl\lib\CPUs\JCpu\src\core\alu.vhd"
|
||||
vhdl work "W:\vhdl\lib\CPUs\JCpu\src\core\cpu.vhd"
|
||||
@@ -0,0 +1,42 @@
|
||||
#!/usr/bin/env ruby
|
||||
|
||||
str1 = %Q!lbl: dc "Hallo", ", ", 0, 1, " der","Jens"!
|
||||
|
||||
i=0;
|
||||
|
||||
def get_stri_lit (str)
|
||||
res = [""];
|
||||
state = "out"
|
||||
|
||||
j = 0;
|
||||
k = 0;
|
||||
for i in (0..str.length-1)
|
||||
c = str[i];
|
||||
nstate = state
|
||||
case state
|
||||
when "out"
|
||||
if c == "\""[0]
|
||||
nstate = "in"
|
||||
end
|
||||
when "in"
|
||||
if c == "\""[0]
|
||||
nstate = "out"
|
||||
if j > 0
|
||||
k = k + 1;
|
||||
res[k] = ""
|
||||
end
|
||||
else
|
||||
res[k] = res[k] + format("%c", c);
|
||||
j = j + 1;
|
||||
end
|
||||
end
|
||||
state = nstate
|
||||
end;
|
||||
return res
|
||||
end
|
||||
|
||||
get_stri_lit(str1).each do |word|
|
||||
puts word
|
||||
end
|
||||
|
||||
|
||||
@@ -0,0 +1,46 @@
|
||||
#!/usr/bin/env ruby
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
# This file: Insertion of code fragments into templates
|
||||
#
|
||||
# Copyright (C) 2007 J. Ahrensfeld
|
||||
#
|
||||
# This program is free software: you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation, either version 3 of the License, or
|
||||
# (at your option) any later version.
|
||||
#
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
#
|
||||
# For questions and ideas, please contact the author at jens@jayfield.org
|
||||
#
|
||||
# ---------------------------------------------------------------------
|
||||
|
||||
arg = $*
|
||||
rom_filename = arg[0].to_s
|
||||
tpl_filename = arg[1].to_s
|
||||
|
||||
subst_pattern = "JASM_ROM_INSERT_HERE"
|
||||
|
||||
# --------------------------------------------------------
|
||||
# Open file
|
||||
# --------------------------------------------------------
|
||||
romfile = File.open(rom_filename, "r")
|
||||
tplfile = File.open(tpl_filename, "r")
|
||||
re = Regexp.new(subst_pattern)
|
||||
|
||||
while (line = tplfile.gets)
|
||||
puts line
|
||||
line.scan(re).each do |word|
|
||||
romfile.each do |raw_line|
|
||||
puts raw_line
|
||||
end
|
||||
end
|
||||
end
|
||||
@@ -0,0 +1,32 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The ROM file for use in your VHDL design
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
-- JASM_ROM_INSERT_HERE
|
||||
|
||||
@@ -0,0 +1,151 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: loadable ROM
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library UNISIM;
|
||||
use UNISIM.VComponents.all;
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
ENTITY irom IS
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
addr : in inst_addr_t;
|
||||
dout : out inst_t
|
||||
);
|
||||
|
||||
END irom;
|
||||
|
||||
ARCHITECTURE loadable OF irom IS
|
||||
|
||||
-- JASM_ROM_INSERT_HERE
|
||||
|
||||
signal jtag_ld_clk : STD_LOGIC;
|
||||
signal jtag_ld_we : STD_LOGIC;
|
||||
signal jtag_ld_addr : inst_addr_t;
|
||||
signal jtag_ld_dout : inst_t;
|
||||
signal jtag_ld_din : inst_t;
|
||||
signal bs_rst, bs_sel, bs_shift, bs_tdi, bs_tdo : std_logic;
|
||||
signal bs_capture, bs_clk0, bs_clk1, bs_update0, bs_update1 : std_logic;
|
||||
signal user_regi, user_rego : unsigned (31 downto 0);
|
||||
constant id : unsigned (31 downto 0) := X"BABE" & X"BEEF";
|
||||
|
||||
begin
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- Virtex-4: JTAG Loader
|
||||
--------------------------------------------------------------------------
|
||||
i00_BUFG : BUFG
|
||||
port map
|
||||
(
|
||||
O => bs_clk1,
|
||||
I => bs_clk0
|
||||
);
|
||||
|
||||
i01_BUFG : BUFG
|
||||
port map
|
||||
(
|
||||
O => bs_update1,
|
||||
I => bs_update0
|
||||
);
|
||||
|
||||
BSCAN_VIRTEX4_inst1 : BSCAN_VIRTEX4
|
||||
generic map
|
||||
(
|
||||
JTAG_CHAIN => 1 -- Value to set BSCAN site of device. Possible values: (1,2,3 or 4)
|
||||
)
|
||||
port map
|
||||
(
|
||||
CAPTURE => bs_capture, -- CAPTURE output from TAP controller
|
||||
DRCK => bs_clk0, -- Data register output for USER functions
|
||||
RESET => bs_rst, -- Reset output from TAP controller
|
||||
SEL => bs_sel, -- USER active output
|
||||
SHIFT => bs_shift, -- SHIFT output from TAP controller
|
||||
TDI => bs_tdi, -- TDI output from TAP controller
|
||||
UPDATE => bs_update0, -- UPDATE output from TAP controller
|
||||
TDO => bs_tdo -- Data input for USER function
|
||||
);
|
||||
|
||||
jtag_ld_addr <= user_regi(user_regi'left downto user_regi'left-inst_addr_t'length+1);
|
||||
jtag_ld_din <= user_regi(inst_t'length-1 downto 0);
|
||||
jtag_ld_clk <= bs_update1;
|
||||
jtag_ld_we <= bs_sel;
|
||||
|
||||
sipo:
|
||||
process (bs_rst, bs_clk1, bs_tdi, bs_shift)
|
||||
begin
|
||||
if bs_rst = '1' then
|
||||
user_regi <= (others => '0');
|
||||
elsif rising_edge(bs_clk1) then
|
||||
if bs_shift = '1' then
|
||||
user_regi <= bs_tdi & user_regi(user_regi'left downto 1);
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
piso:
|
||||
process (bs_rst, bs_clk1, bs_shift, user_rego)
|
||||
begin
|
||||
bs_tdo <= user_rego(0);
|
||||
if bs_rst = '1' then
|
||||
user_rego <= (others => '0');
|
||||
elsif rising_edge(bs_clk1) then
|
||||
if bs_shift = '1' then
|
||||
user_rego <= user_rego(0) & user_rego(user_rego'left downto 1);
|
||||
else
|
||||
user_rego <= (user_rego'left downto inst_t'length => '0') & jtag_ld_dout;
|
||||
-- user_rego <= id;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- ROM Read/Write
|
||||
--------------------------------------------------------------------------
|
||||
PROM_READ:
|
||||
process(clk, ce)
|
||||
begin
|
||||
if rising_edge(clk) and ce = '1' then
|
||||
dout <= imem_rom(to_integer(addr));
|
||||
end if;
|
||||
end process;
|
||||
|
||||
PROM_WRITE:
|
||||
process(jtag_ld_clk, jtag_ld_we)
|
||||
begin
|
||||
if rising_edge(jtag_ld_clk) then
|
||||
if jtag_ld_we = '1' then
|
||||
imem_rom(to_integer(jtag_ld_addr)) <= jtag_ld_din;
|
||||
else
|
||||
jtag_ld_dout <= imem_rom(to_integer(jtag_ld_addr));
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
end loadable;
|
||||
@@ -0,0 +1,494 @@
|
||||
#!/usr/bin/env ruby
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
# This file: A small assembler for the JCPU
|
||||
|
||||
# Copyright (C) 2007 J. Ahrensfeld
|
||||
|
||||
# This library is free software; you can redistribute it and/or
|
||||
# modify it under the terms of the GNU Lesser General Public
|
||||
# License as published by the Free Software Foundation; either
|
||||
# version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
# This library is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
# Lesser General Public License for more details.
|
||||
|
||||
# You should have received a copy of the GNU Lesser General Public
|
||||
# License along with this library; if not, write to the Free Software
|
||||
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
|
||||
# For questions and ideas, please contact the author at jens@jayfield.org
|
||||
|
||||
# ---------------------------------------------------------------------
|
||||
|
||||
arg = $*
|
||||
MAX_SIZE_ROM = 1024
|
||||
PROJECT_NAME = arg.to_s.gsub(/\..*/, "")
|
||||
ENTITY_NAME = "rom"
|
||||
ENTITY_DATA_TYPE = "inst_t"
|
||||
ENTITY_ADDR_TYPE = "inst_addr_t"
|
||||
OPC_LIST_NAME = "/cygdrive/w/vhdl/lib/CPUs/JCpu/tools/opc.list"
|
||||
|
||||
# --------------------------------------------------------
|
||||
# Open file
|
||||
# --------------------------------------------------------
|
||||
filename = arg.to_s
|
||||
if !File.exists?(filename)
|
||||
STDERR.puts "#{filename} does not exist"
|
||||
exit 1
|
||||
end
|
||||
|
||||
# --------------------------------------------------------
|
||||
# Pass 1
|
||||
# --------------------------------------------------------
|
||||
lc = 0 # Line counter
|
||||
pc = 0 # Program counter
|
||||
chip_dc = [0,0,0,0] # chip data counter
|
||||
xmem_dc = 0 # xmem data counter
|
||||
curr_segment = "UNDEF";
|
||||
page = 0
|
||||
|
||||
label_list=[[],[]]
|
||||
instr_list=[nil]
|
||||
file = File.open(filename, "r")
|
||||
file.each do |raw_line|
|
||||
lc += 1
|
||||
|
||||
# Make all upper case
|
||||
iline = "#{raw_line}".strip.upcase
|
||||
|
||||
# Remove comments
|
||||
iline = iline.gsub(/;.*/, "")
|
||||
|
||||
# Split instruction at spaces
|
||||
iline_member = iline.split(" ")
|
||||
|
||||
if iline_member[0] == nil
|
||||
next
|
||||
end
|
||||
|
||||
mc = 0;
|
||||
label = nil
|
||||
clean_line = nil
|
||||
if (iline_member[0] =~ /\w+:/)
|
||||
mc += 1
|
||||
label = iline_member[0].delete(":")
|
||||
if label_list.rindex(label) != nil
|
||||
STDERR.puts format("Error in line %d: Duplicate label \"%s\" found", lc, label)
|
||||
exit 1
|
||||
end
|
||||
end
|
||||
|
||||
case iline_member[mc]
|
||||
when nil
|
||||
value = format("0x%3.3X",pc)
|
||||
when "EQU"
|
||||
if 0 == (iline_member[mc+1] =~ /\d+/)
|
||||
value = format("0x%2.2X",eval(iline_member[mc+1..iline_member.nitems].to_s))
|
||||
else
|
||||
value = iline_member[mc+1]
|
||||
end
|
||||
when "ORG", "CODE"
|
||||
pc = eval(iline_member[mc+1..iline_member.nitems].to_s)
|
||||
value = format("0x%3.3X",pc)
|
||||
when "CDATA", "CMEM"
|
||||
if iline_member[mc+1] == nil
|
||||
STDERR.puts format("Error in line %d: CDATA needs argument!", lc)
|
||||
exit 1
|
||||
end
|
||||
curr_segment = "CMEM";
|
||||
page = iline_member[mc+1].to_i(16)
|
||||
when "XDATA", "XMEM"
|
||||
curr_segment = "XMEM";
|
||||
when "DC"
|
||||
len = 0;
|
||||
iline.split("DC")[1].delete("0x").scan(/[0-9A-Fa-f]+/).each do |byte|
|
||||
len += 1
|
||||
end
|
||||
if curr_segment == "CMEM"
|
||||
STDERR.puts format("Error in line %d: CDATA cannot be initialized!", lc)
|
||||
exit 1
|
||||
else
|
||||
value = format("0x%2.2X",xmem_dc)
|
||||
puts format("Found DC defining %d bytes at 0x%4.4X in %s", len, xmem_dc, curr_segment);
|
||||
xmem_dc += len
|
||||
end
|
||||
when "DB"
|
||||
len = iline_member[mc+1].to_i
|
||||
if curr_segment == "CMEM"
|
||||
value = format("0x%2.2X",chip_dc[page])
|
||||
puts format("Found DB reserving %d bytes at 0x%4.4X in %s(%d)", len, chip_dc[page], curr_segment, page);
|
||||
chip_dc[page] += len
|
||||
else
|
||||
value = format("0x%2.2X",xmem_dc)
|
||||
puts format("Found DB reserving %d bytes at 0x%4.4X in %s", len, xmem_dc, curr_segment);
|
||||
xmem_dc += len
|
||||
end
|
||||
else
|
||||
op_line = iline_member[mc+1..iline_member.nitems].to_s
|
||||
value = format("0x%3.3X",pc)
|
||||
opc = iline_member[mc]
|
||||
if iline_member[mc+1] != nil
|
||||
op1 = op_line.gsub(/,+.*$/, "")
|
||||
end
|
||||
if iline_member[mc+2] != nil
|
||||
op2 = op_line.scan(/,.+$/).to_s.delete(", ")
|
||||
end
|
||||
if instr_list[pc] == nil
|
||||
instr_list[pc] = [lc, pc, opc , op1 , op2]
|
||||
pc += 1
|
||||
else
|
||||
STDERR.puts format("Error in line %d: Overlapping sections at %3.3X", lc, pc)
|
||||
exit 1
|
||||
end
|
||||
end;
|
||||
|
||||
# Push labels
|
||||
if label
|
||||
label_list = label_list + [label, value]
|
||||
end
|
||||
end
|
||||
file.close
|
||||
|
||||
# --------------------------------------------------------
|
||||
def instr(opcode)
|
||||
return format("\"%6.6B\" & X\"%3.3X\"",opcode ,0)
|
||||
end
|
||||
|
||||
def tcl_bits(pc, opcode)
|
||||
return format("%10.10B%6.6B%12.12B",pc, opcode ,0)
|
||||
end
|
||||
|
||||
def instr_k(opcode, k)
|
||||
return format("\"%6.6B\" & X\"%3.3X\"",opcode ,k)
|
||||
end
|
||||
|
||||
def tcl_bits_k(pc, opcode, k)
|
||||
return format("%10.10B%6.6B%12.12B",pc, opcode ,k)
|
||||
end
|
||||
|
||||
def instr_r(opcode, r)
|
||||
return format("\"%6.6B\" & X\"%2.2X%X\"",opcode ,0, r)
|
||||
end
|
||||
|
||||
def tcl_bits_r(pc, opcode, r)
|
||||
return format("%10.10B%6.6B%8.8B%4.4B",pc, opcode ,0,r)
|
||||
end
|
||||
|
||||
def instr_kr(opcode, k, r)
|
||||
return format("\"%6.6B\" & X\"%2.2X%X\"",opcode,k, r)
|
||||
end
|
||||
|
||||
def tcl_bits_kr(pc, opcode, k, r)
|
||||
return format("%10.10B%6.6B%8.8B%4.4B",pc, opcode, k, r)
|
||||
end
|
||||
|
||||
def instr_rk(opcode, r, k)
|
||||
return format("\"%6.6B\" & X\"%2.2X%X\"",opcode,k, r)
|
||||
end
|
||||
|
||||
def tcl_bits_rk(pc, opcode, r, k)
|
||||
return format("%10.10B%6.6B%8.8B%4.4B",pc, opcode, k, r)
|
||||
end
|
||||
|
||||
def instr_rr(opcode, ra, rb)
|
||||
return format("\"%6.6B\" & X\"%X%X%X\"",opcode,0, rb, ra)
|
||||
end
|
||||
|
||||
def tcl_bits_rr(pc, opcode, ra, rb)
|
||||
return format("%10.10B%6.6B%4.4B%4.4B%4.4B",pc, opcode, 0, rb, ra)
|
||||
end
|
||||
|
||||
# --------------------------------------------------------
|
||||
# Read mnemonic set
|
||||
# --------------------------------------------------------
|
||||
filename = OPC_LIST_NAME
|
||||
if !File.exists?(filename)
|
||||
STDERR.puts "#{filename} does not exist"
|
||||
exit 1
|
||||
end
|
||||
|
||||
mnemo_list = []
|
||||
num_opcodes = 0
|
||||
file = File.open(filename, "r")
|
||||
file.each do |raw_line|
|
||||
mnemo_list[num_opcodes] = raw_line.split(" ")[1]
|
||||
num_opcodes += 1
|
||||
end
|
||||
|
||||
# --------------------------------------------------------
|
||||
# Pass 2
|
||||
# --------------------------------------------------------
|
||||
pc = 0
|
||||
opc_start = 2
|
||||
num_errors = 0
|
||||
vhdl_trans_list = [nil]
|
||||
vhdl_comment_list = [nil]
|
||||
vhdl_tcl_list = [nil]
|
||||
instr_list.each do |instruct|
|
||||
|
||||
# puts instruct
|
||||
if instruct == nil
|
||||
vhdl_trans_list[pc] = format("\"%6.6B\" & X\"%3.3X\"",0 ,0)
|
||||
vhdl_comment_list[pc] = format("0x%3.3X:", pc)
|
||||
vhdl_tcl_list[pc] = tcl_bits(pc, 0)
|
||||
pc += 1
|
||||
next
|
||||
end
|
||||
|
||||
# determine arglen of instruction
|
||||
ilen = 0
|
||||
if instruct[opc_start+1] == nil
|
||||
arglen = 0
|
||||
elsif instruct[opc_start+2] == nil
|
||||
arglen = 1
|
||||
elsif instruct[opc_start+3] == nil
|
||||
arglen = 2
|
||||
end
|
||||
|
||||
# Symbol substitution
|
||||
error = false
|
||||
for i in (1..3)
|
||||
subst_pos = opc_start+i
|
||||
if instruct[subst_pos] == nil
|
||||
next
|
||||
end
|
||||
expr_token = ""
|
||||
expr_subst = nil
|
||||
is_direct = true;
|
||||
|
||||
# instruct[subst_pos] = instruct[subst_pos].delete(" ")
|
||||
|
||||
# checks R0 .. R16, Mnemonics
|
||||
instr_str = instruct[subst_pos]
|
||||
if 0 == (instr_str =~ /\(.+\)/)
|
||||
instr_str = instr_str.delete("()")
|
||||
is_direct = false;
|
||||
end
|
||||
|
||||
expr_token = instr_str.split(/\+|\-|\*|\//)[0]
|
||||
if (0 != (expr_token =~ /R[0-9]+/)) && (0 != (expr_token =~ /\d+/))
|
||||
idx = label_list.rindex(expr_token)
|
||||
if idx != nil
|
||||
expr_subst = label_list[idx+1]
|
||||
instruct[subst_pos] = instruct[subst_pos].gsub(expr_token, expr_subst)
|
||||
else
|
||||
STDERR.puts format("Error in line %d: Symbol \"%s\" not found", instruct[0], expr_token)
|
||||
error = true
|
||||
end
|
||||
end
|
||||
|
||||
if expr_subst != nil
|
||||
if 0 == (expr_subst =~ /\d+/)
|
||||
if is_direct == true
|
||||
instruct[subst_pos] = format("0x%2.2X", eval(instruct[subst_pos]))
|
||||
else
|
||||
instruct[subst_pos] = format("(0x%2.2X)", eval(instruct[subst_pos]))
|
||||
end
|
||||
else
|
||||
if 0 != (expr_subst =~ /R[0-9]+/)
|
||||
STDERR.puts format("Error in line %d: Invalid expression \"%s\"", instruct[0], expr_subst)
|
||||
error = true
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
# Parse operands
|
||||
reg = [0,0]
|
||||
kk = 0
|
||||
format = instruct[opc_start]
|
||||
for i in (0..1)
|
||||
if instruct[opc_start+i+1] =~ Regexp.new("R[0-9]+")
|
||||
# Check indirect addressing
|
||||
reg[i] = instruct[opc_start+i+1].delete("R()").to_i
|
||||
format += "|R"
|
||||
if reg[i] > 15
|
||||
STDERR.puts format("Error in line %d: Invalid register \"R%d\" specified", instruct[0], reg[i])
|
||||
error = true
|
||||
end
|
||||
else
|
||||
if instruct[opc_start+i+1] =~ Regexp.new("[0-9A-F]+")
|
||||
kk = instruct[opc_start+i+1].delete("()").to_i(16)
|
||||
format += "|K"
|
||||
end
|
||||
end
|
||||
if instruct[opc_start+i+1] =~ Regexp.new("\\(.+\\)")
|
||||
format += "i";
|
||||
end
|
||||
end
|
||||
|
||||
# Output instruction
|
||||
opcode = mnemo_list.rindex(format).to_i
|
||||
mnemo = instruct[2];
|
||||
|
||||
case format
|
||||
when "NOP", "HALT", "RET", "RETI"
|
||||
vhdl_trans_list[pc] = instr(opcode)
|
||||
vhdl_tcl_list[pc] = tcl_bits(pc, opcode)
|
||||
minstr_comment = format("0x%3.3X: %s", pc, mnemo)
|
||||
when "MOVC|R|Ri", "MOVX|R|Ri"
|
||||
vhdl_trans_list[pc] = instr_rr(opcode, reg[0], reg[1]);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rr(pc, opcode, reg[0], reg[1])
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d, (R%2.2d)", pc, mnemo, reg[0], reg[1])
|
||||
when "MOV|R|R", "SUB|R|R", "ADD|R|R", "AND|R|R", "OR|R|R", "XOR|R|R", "CMP|R|R"
|
||||
vhdl_trans_list[pc] = instr_rr(opcode, reg[0], reg[1]);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rr(pc, opcode, reg[0], reg[1])
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d, R%2.2d", pc, mnemo, reg[0], reg[1])
|
||||
when "MOVC|Ri|R", "MOVX|Ri|R"
|
||||
vhdl_trans_list[pc] = instr_rr(opcode, reg[1], reg[0]);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rr(pc, opcode, reg[1], reg[0])
|
||||
minstr_comment = format("0x%3.3X: %s (R%2.2d), R%2.2d", pc, mnemo, reg[1], reg[0])
|
||||
when "MOVC|Ri|K", "MOVX|Ri|K", "COUT|Ri|K", "XOUT|Ri|K"
|
||||
vhdl_trans_list[pc] = instr_rk(opcode, reg[0], kk);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rk(pc, opcode, reg[0], kk)
|
||||
minstr_comment = format("0x%3.3X: %s (R%2.2d), 0x%2.2X", pc, mnemo, reg[0], kk)
|
||||
when "MOVC|R|Ki", "MOVX|R|Ki", "CIN|R|Ki", "XIN|R|Ki"
|
||||
vhdl_trans_list[pc] = instr_rk(opcode, reg[0], kk);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rk(pc, opcode, reg[0], kk)
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d, (0x%2.2X)", pc, mnemo, reg[0], kk)
|
||||
when "MOV|R|K", "SUB|R|K", "ADD|R|K", "AND|R|K", "OR|R|K", "XOR|R|K", "CMP|R|K"
|
||||
vhdl_trans_list[pc] = instr_rk(opcode, reg[0], kk);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rk(pc, opcode, reg[0], kk)
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d, 0x%2.2X", pc, mnemo, reg[0], kk)
|
||||
when "MOVC|Ki|R", "MOVC|Ki|R", "MOVX|Ki|R", "MOVX|Ki|R", "COUT|Ki|R", "XOUT|Ki|R"
|
||||
vhdl_trans_list[pc] = instr_kr(opcode, kk, reg[1]);
|
||||
vhdl_tcl_list[pc] = tcl_bits_kr(pc, opcode, kk, reg[1])
|
||||
minstr_comment = format("0x%3.3X: %s (0x%2.2X), R%2.2d", pc, mnemo, kk, reg[1])
|
||||
when "CALL|K", "JMP|K", "JNZ|K", "JZ|K","JNC|K", "JC|K", "JLT|K", "JGT|K", "JLE|K", "JGE|K", "JEQ|K", "JNE|K"
|
||||
vhdl_trans_list[pc] = instr_k(opcode, kk)
|
||||
vhdl_tcl_list[pc] = tcl_bits_k(pc, opcode, kk)
|
||||
minstr_comment = format("0x%3.3X: %s 0x%3.3X", pc, mnemo, kk)
|
||||
when "PUSH|R", "POP|R", "SHR|R", "SHL|R", "ROR|R", "ROL|R", "RORC|R", "ROLC|R"
|
||||
vhdl_trans_list[pc] = instr_r(opcode, reg[0])
|
||||
vhdl_tcl_list[pc] = tcl_bits_r(pc, opcode, reg[0])
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d", pc, mnemo, reg[0])
|
||||
when "TST|R"
|
||||
kk = 0
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d", pc, mnemo, reg[0])
|
||||
opcode = mnemo_list.rindex("CMP|R|K").to_i
|
||||
vhdl_trans_list[pc] = instr_rk(opcode, reg[0], kk);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rk(pc, opcode, reg[0], kk)
|
||||
when "INC|R"
|
||||
kk = 1
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d", pc, mnemo, reg[0])
|
||||
opcode = mnemo_list.rindex("ADD|R|K").to_i
|
||||
vhdl_trans_list[pc] = instr_rk(opcode, reg[0], kk);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rk(pc, opcode, reg[0], kk)
|
||||
when "DEC|R"
|
||||
kk = 1
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d", pc, mnemo, reg[0])
|
||||
opcode = mnemo_list.rindex("SUB|R|K").to_i
|
||||
vhdl_trans_list[pc] = instr_rk(opcode, reg[0], kk);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rk(pc, opcode, reg[0], kk)
|
||||
else
|
||||
STDERR.puts format("Error in line %d: Not yet implemented %s", instruct[0], format)
|
||||
error = true
|
||||
end
|
||||
|
||||
if error
|
||||
num_errors += 1
|
||||
break
|
||||
end
|
||||
vhdl_comment_list[pc] = minstr_comment
|
||||
|
||||
puts vhdl_trans_list[pc] + " -- " + minstr_comment
|
||||
|
||||
pc += 1
|
||||
end
|
||||
|
||||
# --------------------------------------------------------
|
||||
# Output ROM file
|
||||
# --------------------------------------------------------
|
||||
if num_errors == 0
|
||||
|
||||
filename = format("rom_%s.vhdl.snip", PROJECT_NAME)
|
||||
file = File.open(filename, "w")
|
||||
|
||||
file.puts format("ENTITY %s IS\n", ENTITY_NAME)
|
||||
file.puts format("\tPort (\n")
|
||||
file.puts format("\tclk\t\t\t: in STD_LOGIC;\n")
|
||||
file.puts format("\tce\t\t\t: in STD_LOGIC;\n")
|
||||
file.puts format("\taddr\t\t: in %s;\n", ENTITY_ADDR_TYPE)
|
||||
file.puts format("\tdout\t\t: out %s\n", ENTITY_DATA_TYPE)
|
||||
file.puts format("\t);\n")
|
||||
file.puts format("END %s;\n", ENTITY_NAME)
|
||||
file.puts format("\n")
|
||||
file.puts format("ARCHITECTURE %s OF %s IS \n", PROJECT_NAME, ENTITY_NAME)
|
||||
file.puts format("\n")
|
||||
file.puts format("\ttype instruction_rom_t is array (0 to %d) of %s;\n", pc-1, ENTITY_DATA_TYPE)
|
||||
file.puts format("\n")
|
||||
file.puts format("\tconstant instruction_rom : instruction_rom_t :=\n")
|
||||
file.puts format("\t(\n");
|
||||
for i in (0..pc-2)
|
||||
file.puts "\t\t" + vhdl_trans_list[i] + ", -- " + vhdl_comment_list[i] + "\n"
|
||||
end;
|
||||
file.puts "\t\t" + vhdl_trans_list[pc-1] + " -- " + vhdl_comment_list[pc-1] + "\n"
|
||||
file.puts format("\t);\n")
|
||||
file.puts format("\n")
|
||||
file.puts format("begin")
|
||||
file.puts format("\n")
|
||||
file.puts format("PROM_READ:")
|
||||
file.puts format("\tprocess(clk, ce)\n")
|
||||
file.puts format("\tbegin\n")
|
||||
file.puts format("\t\tif rising_edge(clk) and ce = '1' then\n")
|
||||
file.puts format("\t\t\tdout <= instruction_rom(to_integer(addr));\n")
|
||||
file.puts format("\t\tend if;\n")
|
||||
file.puts format("\tend process;\n")
|
||||
file.puts format("\n")
|
||||
file.puts format("end %s;\n", PROJECT_NAME)
|
||||
puts format("ROM file written to \"%s\"\n",filename)
|
||||
file.close
|
||||
end
|
||||
if num_errors == 0
|
||||
|
||||
filename = format("preinit_%s.vhdl.snip", PROJECT_NAME)
|
||||
file = File.open(filename, "w")
|
||||
|
||||
file.puts format("\tsignal instruction_rom : instruction_rom_t :=\n")
|
||||
file.puts format("\t(\n");
|
||||
for i in (0..pc-2)
|
||||
file.puts "\t\t" + vhdl_trans_list[i] + ", -- " + vhdl_comment_list[i] + "\n"
|
||||
end;
|
||||
if pc < (MAX_SIZE_ROM-1)
|
||||
file.puts "\t\t" + vhdl_trans_list[pc-1] + ", -- " + vhdl_comment_list[pc-1] + "\n"
|
||||
for i in (pc..(MAX_SIZE_ROM-2))
|
||||
file.puts "\t\t" + instr(0) + ",\n"
|
||||
end;
|
||||
file.puts "\t\t" + instr(0) + "\n"
|
||||
else
|
||||
file.puts "\t\t" + vhdl_trans_list[pc-1] + " -- " + vhdl_comment_list[pc-1] + "\n"
|
||||
end
|
||||
file.puts format("\t);\n")
|
||||
puts format("PREINIT file written to \"%s\"\n",filename)
|
||||
file.close
|
||||
end
|
||||
if num_errors == 0
|
||||
filename = format("rom_%s.tcl.snip", PROJECT_NAME)
|
||||
file = File.open(filename, "w")
|
||||
for i in (0..pc-1)
|
||||
# Chipscope 8.1
|
||||
# file.puts format("jtag_shiftdr $handle -buffer \"%s\" -endstate RTI -device $devid", vhdl_tcl_list[i].reverse);
|
||||
|
||||
# Chipscope 9.1
|
||||
file.puts format("\# %s", vhdl_comment_list[i])
|
||||
file.puts format("::chipscope::csejtag_tap shift_device_dr $handle $devid $CSEJTAG_SHIFT_READWRITE $CSEJTAG_RUN_TEST_IDLE 0 %d \"%8.8X\"\n\n", vhdl_tcl_list[i].length, vhdl_tcl_list[i].to_i(2));
|
||||
end;
|
||||
puts format("TCL snippet written to \"%s\"\n",filename)
|
||||
file.close
|
||||
end
|
||||
|
||||
# --------------------------------------------------------
|
||||
# Output final statistics
|
||||
# --------------------------------------------------------
|
||||
if num_errors == 0
|
||||
puts "Program uses #{pc} instruction addresses"
|
||||
puts "No errors found"
|
||||
exit 0
|
||||
else
|
||||
puts "#{num_errors} errors found"
|
||||
exit 1
|
||||
end
|
||||
@@ -0,0 +1,814 @@
|
||||
#!/usr/bin/env ruby
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
# This file: A small assembler for the JCPU
|
||||
#
|
||||
# Copyright (C) 2007 J. Ahrensfeld
|
||||
#
|
||||
# This program is free software: you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation, either version 3 of the License, or
|
||||
# (at your option) any later version.
|
||||
#
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
#
|
||||
# For questions and ideas, please contact the author at jens@jayfield.org
|
||||
#
|
||||
# ---------------------------------------------------------------------
|
||||
|
||||
arg = $*
|
||||
FILE_SUFFIX = "jsm"
|
||||
IROM_MAX_SIZE = 1024
|
||||
IROM_ENTITY_NAME = "irom"
|
||||
IROM_DATA_TYPE = "inst_t"
|
||||
IROM_ADDR_TYPE = "inst_addr_t"
|
||||
XROM_MAX_SIZE = 256
|
||||
XROM_DATA_TYPE = "dmem_data_t"
|
||||
XROM_ADDR_TYPE = "dmem_addr_t"
|
||||
XROM_ENTITY_NAME = "xrom"
|
||||
OPC_LIST_NAME = "/cygdrive/w/vhdl/lib/CPUs/JCpu/tools/opc.list"
|
||||
|
||||
# --------------------------------------------------------
|
||||
class Parser
|
||||
def curr_segment
|
||||
@curr_segment
|
||||
end
|
||||
def curr_segment=(arg)
|
||||
@curr_segment=arg
|
||||
end
|
||||
def add_label(labelname, addr)
|
||||
@label_list = @label_list + [labelname, addr]
|
||||
end
|
||||
def getLabelIdByName(label)
|
||||
return @label_list.rindex(label)
|
||||
end
|
||||
def getLabelNameById(id)
|
||||
return @label_list[id]
|
||||
end
|
||||
def put_instr(name, lc, opc , op1 , op2)
|
||||
if get_instr != nil
|
||||
STDERR.puts format("Error in line %d: Overlapping sections at %3.3X", lc, @pc)
|
||||
exit 1
|
||||
end
|
||||
@instr_list[@pc] = [lc, @pc, opc , op1 , op2, name]
|
||||
end
|
||||
def get_instr
|
||||
return @instr_list[@pc]
|
||||
end
|
||||
def put_xmem(value, lc)
|
||||
if get_xmem != nil
|
||||
STDERR.puts format("Error in line %d: Overlapping sections at %3.3X (%s)", lc, xmem_dc, curr_segment)
|
||||
exit 1
|
||||
end
|
||||
@xmem[xmem_dc] = value
|
||||
@xmem_dc = xmem_dc + 1
|
||||
end
|
||||
def get_xmem
|
||||
return @xmem[xmem_dc]
|
||||
end
|
||||
def xmem
|
||||
return @xmem
|
||||
end
|
||||
def put_cmem(value, lc)
|
||||
if get_cmem(page) != nil
|
||||
STDERR.puts format("Error in line %d: Overlapping sections at %3.3X (%s)", lc, cmem_dc, curr_segment)
|
||||
exit 1
|
||||
end
|
||||
@cmem[page][cmem_dc] = value
|
||||
@cmem_dc[page] = cmem_dc + 1
|
||||
end
|
||||
def get_cmem(pg)
|
||||
return @cmem[pg][cmem_dc]
|
||||
end
|
||||
def cmem(page)
|
||||
return @cmem[page]
|
||||
end
|
||||
def cmem_dc=(addr)
|
||||
@cmem_dc[page] = addr
|
||||
end
|
||||
def cmem_dc
|
||||
@cmem_dc[page]
|
||||
end
|
||||
def xmem_dc=(addr)
|
||||
@xmem_dc = addr
|
||||
end
|
||||
def xmem_dc
|
||||
@xmem_dc
|
||||
end
|
||||
def page=(page)
|
||||
@page = page;
|
||||
end
|
||||
def page
|
||||
@page;
|
||||
end
|
||||
def pc=(pc)
|
||||
@pc = pc;
|
||||
if (pc > @pc_max)
|
||||
@pc_max = pc
|
||||
end
|
||||
end
|
||||
def pc
|
||||
@pc;
|
||||
end
|
||||
def pc_max
|
||||
@pc_max;
|
||||
end
|
||||
def instr_list
|
||||
@instr_list
|
||||
end
|
||||
def label_list
|
||||
@label_list
|
||||
end
|
||||
|
||||
def initialize()
|
||||
@pc_max = 0
|
||||
@pc = 0 # Program counter
|
||||
@cmem_dc = [0,0,0,0] # chip data counter
|
||||
@xmem_dc = 0 # xmem data counter
|
||||
@curr_segment = "UNDEF";
|
||||
@page = 0
|
||||
@label_list=[[],[]]
|
||||
@instr_list=[nil]
|
||||
@cmem = [[],[]];
|
||||
@xmem = [];
|
||||
end
|
||||
def method_missing(name, *args)
|
||||
puts "I don't know the method #{name}"
|
||||
end
|
||||
end
|
||||
|
||||
# --------------------------------------------------------
|
||||
def parse(name, obj)
|
||||
|
||||
lc = 0 # Line counter
|
||||
file = File.open(name, "r")
|
||||
|
||||
file.each do |raw_line|
|
||||
lc += 1
|
||||
|
||||
# Make all upper case
|
||||
iline = "#{raw_line}".strip
|
||||
|
||||
# Remove comments
|
||||
iline = iline.gsub(/;.*/, "")
|
||||
|
||||
# Split instruction at spaces
|
||||
iline_member = iline.split(" ")
|
||||
|
||||
if iline_member[0] == nil
|
||||
next
|
||||
end
|
||||
|
||||
mc = 0;
|
||||
label = nil
|
||||
clean_line = nil
|
||||
if (iline_member[0] =~ /\w+:/)
|
||||
mc += 1
|
||||
label = iline_member[0].delete(":")
|
||||
if obj.getLabelIdByName(label) != nil
|
||||
STDERR.puts format("Error in line %d: Duplicate label \"%s\" found", lc, label)
|
||||
exit 1
|
||||
end
|
||||
end
|
||||
|
||||
token = iline_member[mc]
|
||||
if token
|
||||
token = token.upcase
|
||||
end
|
||||
|
||||
case token
|
||||
when nil
|
||||
if obj.curr_segment == "CMEM"
|
||||
curr_addr = format("0x%3.3X",obj.cmem_dc)
|
||||
elsif obj.curr_segment == "XMEM"
|
||||
curr_addr = format("0x%3.3X",obj.xmem_dc)
|
||||
elsif obj.curr_segment == "CODE"
|
||||
curr_addr = format("0x%3.3X",obj.pc)
|
||||
else
|
||||
STDERR.puts format("Error in line %d: Undefined segment", lc)
|
||||
exit 1
|
||||
end
|
||||
when "INCLUDE"
|
||||
if iline_member[mc+1] == nil
|
||||
STDERR.puts format("Error in line %d: %s needs argument!", lc, token)
|
||||
exit 1
|
||||
end
|
||||
inc_name = iline_member[mc+1].delete("\"")
|
||||
puts format("Inserting \"%s\" into \"%s\" at line %d", inc_name, name, lc);
|
||||
parse(inc_name, obj)
|
||||
when "EQU"
|
||||
if iline_member[mc+1] == nil
|
||||
STDERR.puts format("Error in line %d: %s needs argument!", lc, token)
|
||||
exit 1
|
||||
end
|
||||
if 0 == (iline_member[mc+1] =~ /\d+/)
|
||||
curr_addr = format("0x%2.2X",eval(iline_member[mc+1..iline_member.nitems].to_s))
|
||||
else
|
||||
curr_addr = iline_member[mc+1]
|
||||
end
|
||||
when "ORG"
|
||||
if iline_member[mc+1] == nil
|
||||
STDERR.puts format("Error in line %d: %s needs argument!", lc, token)
|
||||
exit 1
|
||||
end
|
||||
offset = eval(iline_member[mc+1..iline_member.nitems].to_s)
|
||||
case obj.curr_segment
|
||||
when "CODE"
|
||||
obj.pc = offset
|
||||
curr_addr = format("0x%3.3X",obj.pc)
|
||||
when "CMEM"
|
||||
obj.cmem_dc = offset
|
||||
when "XMEM"
|
||||
obj.xmem_dc = offset
|
||||
|
||||
end
|
||||
when "CODE"
|
||||
curr_addr = format("0x%3.3X",obj.pc)
|
||||
obj.curr_segment = "CODE";
|
||||
when "CDATA", "CMEM"
|
||||
if iline_member[mc+1] == nil
|
||||
STDERR.puts format("Error in line %d: %s needs argument!", lc, token)
|
||||
exit 1
|
||||
end
|
||||
obj.curr_segment = "CMEM";
|
||||
obj.page = iline_member[mc+1].to_i(16)
|
||||
when "XDATA", "XMEM"
|
||||
obj.curr_segment = "XMEM";
|
||||
when "DC"
|
||||
len = 0;
|
||||
if iline_member[mc+1] == nil
|
||||
STDERR.puts format("Error in line %d: %s needs argument!", lc, token)
|
||||
exit 1
|
||||
end
|
||||
if obj.curr_segment == "CMEM"
|
||||
STDERR.puts format("Error in line %d: %s cannot be initialized!", lc, obj.curr_segment)
|
||||
exit 1
|
||||
elsif obj.curr_segment == "XMEM"
|
||||
curr_addr = format("0x%2.2X",obj.xmem_dc)
|
||||
dc_old = obj.xmem_dc;
|
||||
val_array = raw_line.split(/dc|DC|Dc|dC/)[1].delete("\t").gsub(/;.*/, "").split(",")
|
||||
|
||||
# Parse string literals
|
||||
val_array.each do |item|
|
||||
if 0 == (item =~ /.*\".*\"/)
|
||||
str = item.delete("\"")
|
||||
puts item
|
||||
for nn in (0..str.length-1)
|
||||
if str[nn] > 31
|
||||
obj.put_xmem(str[nn], lc);
|
||||
puts "S: " + str[nn].to_s
|
||||
len += 1
|
||||
end
|
||||
end;
|
||||
else
|
||||
argument = item
|
||||
puts "B: " + argument
|
||||
obj.put_xmem(eval(argument), lc);
|
||||
len += 1
|
||||
end
|
||||
end
|
||||
puts format("Found DC defining %d bytes at 0x%4.4X in %s", len, dc_old, obj.curr_segment);
|
||||
else
|
||||
STDERR.puts format("Error in line %d: Invalid segment %s for \"%s\"", lc, obj.curr_segment, token)
|
||||
exit 1
|
||||
end
|
||||
when "DB"
|
||||
if iline_member[mc+1] == nil
|
||||
STDERR.puts format("Error in line %d: %s needs argument!", lc, token)
|
||||
exit 1
|
||||
end
|
||||
len = eval(iline_member[mc+1]).to_i
|
||||
if obj.curr_segment == "CMEM"
|
||||
curr_addr = format("0x%2.2X",obj.cmem_dc)
|
||||
puts format("Found DB reserving %d bytes at 0x%4.4X in %s(%d)", len, obj.cmem_dc, obj.curr_segment, obj.page);
|
||||
for nn in (1..len)
|
||||
obj.put_cmem(0, lc)
|
||||
end
|
||||
elsif obj.curr_segment == "XMEM"
|
||||
curr_addr = format("0x%2.2X",obj.xmem_dc)
|
||||
puts format("Found DB reserving %d bytes at 0x%4.4X in %s", len, obj.xmem_dc, obj.curr_segment);
|
||||
for nn in (1..len)
|
||||
obj.put_xmem(0, lc)
|
||||
end
|
||||
else
|
||||
STDERR.puts format("Error in line %d: Invalid segment %s for \"%s\"", lc, obj.curr_segment, token)
|
||||
exit 1
|
||||
end
|
||||
else
|
||||
if obj.curr_segment != "CODE"
|
||||
STDERR.puts format("Error in line %d: Invalid segment %s for \"%s\"", lc, obj.curr_segment, token)
|
||||
exit 1
|
||||
end
|
||||
|
||||
op_line = iline_member[mc+1..iline_member.nitems].to_s
|
||||
curr_addr = format("0x%3.3X",obj.pc)
|
||||
opc = token
|
||||
if iline_member[mc+1] != nil
|
||||
op1 = op_line.gsub(/,+.*$/, "")
|
||||
end
|
||||
if iline_member[mc+2] != nil
|
||||
op2 = op_line.scan(/,.+$/).to_s.delete(", ")
|
||||
end
|
||||
obj.put_instr(name, lc, opc, op1, op2)
|
||||
obj.pc = obj.pc + 1
|
||||
end;
|
||||
|
||||
# Push labels
|
||||
if label
|
||||
obj.add_label(label, curr_addr)
|
||||
end
|
||||
end
|
||||
file.close
|
||||
return obj
|
||||
end
|
||||
|
||||
# --------------------------------------------------------
|
||||
# Instruction formatting
|
||||
# --------------------------------------------------------
|
||||
def instr(opcode)
|
||||
return format("\"%6.6B\" & X\"%3.3X\"",opcode ,0)
|
||||
end
|
||||
|
||||
def tcl_bits(pc, opcode)
|
||||
return format("%12.12B%8.8B%12.12B",pc, opcode ,0)
|
||||
end
|
||||
|
||||
def instr_k(opcode, k)
|
||||
return format("\"%6.6B\" & X\"%3.3X\"",opcode ,k)
|
||||
end
|
||||
|
||||
def tcl_bits_k(pc, opcode, k)
|
||||
return format("%12.12B%8.8B%12.12B",pc, opcode ,k)
|
||||
end
|
||||
|
||||
def instr_r(opcode, r)
|
||||
return format("\"%6.6B\" & X\"%2.2X%X\"",opcode ,0, r)
|
||||
end
|
||||
|
||||
def tcl_bits_r(pc, opcode, r)
|
||||
return format("%12.12B%8.8B%8.8B%4.4B",pc, opcode ,0,r)
|
||||
end
|
||||
|
||||
def instr_kr(opcode, k, r)
|
||||
return format("\"%6.6B\" & X\"%2.2X%X\"",opcode,k, r)
|
||||
end
|
||||
|
||||
def tcl_bits_kr(pc, opcode, k, r)
|
||||
return format("%12.12B%8.8B%8.8B%4.4B",pc, opcode, k, r)
|
||||
end
|
||||
|
||||
def instr_rk(opcode, r, k)
|
||||
return format("\"%6.6B\" & X\"%2.2X%X\"",opcode,k, r)
|
||||
end
|
||||
|
||||
def tcl_bits_rk(pc, opcode, r, k)
|
||||
return format("%12.12B%8.8B%8.8B%4.4B",pc, opcode, k, r)
|
||||
end
|
||||
|
||||
def instr_rr(opcode, ra, rb)
|
||||
return format("\"%6.6B\" & X\"%X%X%X\"",opcode,0, rb, ra)
|
||||
end
|
||||
|
||||
def tcl_bits_rr(pc, opcode, ra, rb)
|
||||
return format("%12.12B%8.8B%4.4B%4.4B%4.4B",pc, opcode, 0, rb, ra)
|
||||
end
|
||||
|
||||
# --------------------------------------------------------
|
||||
# Open file
|
||||
# --------------------------------------------------------
|
||||
filename = arg.to_s
|
||||
if !File.exists?(filename)
|
||||
STDERR.puts "#{filename} does not exist"
|
||||
exit 1
|
||||
end
|
||||
PROJECT_NAME = File.basename(filename, "." + FILE_SUFFIX)
|
||||
|
||||
# --------------------------------------------------------
|
||||
# Pass 1
|
||||
# --------------------------------------------------------
|
||||
first_pass = Parser.new();
|
||||
parse(filename, first_pass)
|
||||
|
||||
# --------------------------------------------------------
|
||||
# Read mnemonic set
|
||||
# --------------------------------------------------------
|
||||
filename = OPC_LIST_NAME
|
||||
if !File.exists?(filename)
|
||||
STDERR.puts "#{filename} does not exist"
|
||||
exit 1
|
||||
end
|
||||
|
||||
mnemo_list = []
|
||||
num_opcodes = 0
|
||||
file = File.open(filename, "r")
|
||||
file.each do |raw_line|
|
||||
mnemo_list[num_opcodes] = raw_line.split(" ")[1]
|
||||
num_opcodes += 1
|
||||
end
|
||||
|
||||
# --------------------------------------------------------
|
||||
# Pass 2
|
||||
# --------------------------------------------------------
|
||||
pc = 0
|
||||
opc_start = 2
|
||||
num_errors = 0
|
||||
vhdl_trans_list = [nil]
|
||||
vhdl_comment_list = [nil]
|
||||
vhdl_tcl_list = [nil]
|
||||
|
||||
# ToDo: Use class-methods
|
||||
label_list = first_pass.label_list
|
||||
instr_list = first_pass.instr_list
|
||||
|
||||
instr_list.each do |instruct|
|
||||
|
||||
# puts instruct
|
||||
if instruct == nil
|
||||
vhdl_trans_list[pc] = format("\"%6.6B\" & X\"%3.3X\"",0 ,0)
|
||||
vhdl_comment_list[pc] = format("0x%3.3X:", pc)
|
||||
vhdl_tcl_list[pc] = tcl_bits(pc, 0)
|
||||
pc += 1
|
||||
next
|
||||
end
|
||||
|
||||
# determine arglen of instruction
|
||||
ilen = 0
|
||||
if instruct[opc_start+1] == nil
|
||||
arglen = 0
|
||||
elsif instruct[opc_start+2] == nil
|
||||
arglen = 1
|
||||
elsif instruct[opc_start+3] == nil
|
||||
arglen = 2
|
||||
end
|
||||
|
||||
# Symbol substitution
|
||||
error = false
|
||||
for i in (1..2)
|
||||
subst_pos = opc_start+i
|
||||
if instruct[subst_pos] == nil
|
||||
next
|
||||
end
|
||||
expr_token = ""
|
||||
expr_subst = nil
|
||||
is_direct = true;
|
||||
|
||||
# checks R0 .. R16, Mnemonics
|
||||
instruct[subst_pos] = instruct[subst_pos].gsub(/'low/, "")
|
||||
if (nil != (instruct[subst_pos] =~ /'high/))
|
||||
instruct[subst_pos]= format("%s/256", instruct[subst_pos].gsub(/'high/, ""))
|
||||
end
|
||||
instr_str = instruct[subst_pos]
|
||||
if 0 == (instr_str =~ /\(.+\)/)
|
||||
instr_str = instr_str.delete("()")
|
||||
is_direct = false;
|
||||
end
|
||||
|
||||
expr_token = instr_str.split(/\+|\-|\*|\/|\||\&/)[0]
|
||||
if (0 != (expr_token =~ /R[0-9]+/)) && (0 != (expr_token =~ /\d+/))
|
||||
idx = label_list.rindex(expr_token)
|
||||
if idx != nil
|
||||
expr_subst = label_list[idx+1]
|
||||
instruct[subst_pos] = instruct[subst_pos].gsub(expr_token, expr_subst)
|
||||
else
|
||||
STDERR.puts format("%s: Error in line %d: Symbol \"%s\" not found", instruct[5], instruct[0], expr_token)
|
||||
error = true
|
||||
end
|
||||
end
|
||||
|
||||
if expr_subst != nil
|
||||
if 0 == (expr_subst =~ /\d+/)
|
||||
if is_direct == true
|
||||
instruct[subst_pos] = format("0x%2.2X", eval(instruct[subst_pos]))
|
||||
else
|
||||
instruct[subst_pos] = format("(0x%2.2X)", eval(instruct[subst_pos]))
|
||||
end
|
||||
else
|
||||
if 0 != (expr_subst =~ /R[0-9]+/)
|
||||
STDERR.puts format("%s: Error in line %d: Invalid expression \"%s\"", instruct[5], instruct[0], expr_subst)
|
||||
error = true
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
# Parse operands
|
||||
reg = [0,0]
|
||||
kk = 0
|
||||
format = instruct[opc_start]
|
||||
for i in (0..1)
|
||||
if instruct[opc_start+i+1] =~ Regexp.new("R[0-9]+")
|
||||
# Check indirect addressing
|
||||
reg[i] = instruct[opc_start+i+1].delete("R()").to_i
|
||||
format += "|R"
|
||||
if reg[i] > 15
|
||||
STDERR.puts format("%s: Error in line %d: Invalid register \"R%d\" specified", instruct[5], instruct[0], reg[i])
|
||||
error = true
|
||||
end
|
||||
else
|
||||
if instruct[opc_start+i+1] =~ Regexp.new("[0-9A-F]+")
|
||||
kk = eval(instruct[opc_start+i+1].delete("()"))
|
||||
format += "|K"
|
||||
end
|
||||
end
|
||||
if instruct[opc_start+i+1] =~ Regexp.new("\\(.+\\)")
|
||||
format += "i";
|
||||
end
|
||||
end
|
||||
|
||||
if error
|
||||
num_errors += 1
|
||||
break
|
||||
end
|
||||
|
||||
# Output instruction
|
||||
opcode = mnemo_list.rindex(format).to_i
|
||||
mnemo = instruct[2];
|
||||
|
||||
case format
|
||||
# Native instructions
|
||||
when "NOP", "HALT", "RET", "RETI", "SETC"
|
||||
vhdl_trans_list[pc] = instr(opcode)
|
||||
vhdl_tcl_list[pc] = tcl_bits(pc, opcode)
|
||||
minstr_comment = format("0x%3.3X: %s", pc, mnemo)
|
||||
when "MOVC|R|Ri", "MOVX|R|Ri"
|
||||
vhdl_trans_list[pc] = instr_rr(opcode, reg[0], reg[1]);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rr(pc, opcode, reg[0], reg[1])
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d, (R%2.2d)", pc, mnemo, reg[0], reg[1])
|
||||
when "MOV|R|R", "SUB|R|R", "SUBC|R|R", "ADD|R|R", "ADDC|R|R", "AND|R|R", "OR|R|R", "XOR|R|R", "CMP|R|R"
|
||||
vhdl_trans_list[pc] = instr_rr(opcode, reg[0], reg[1]);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rr(pc, opcode, reg[0], reg[1])
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d, R%2.2d", pc, mnemo, reg[0], reg[1])
|
||||
when "MOVC|Ri|R", "MOVX|Ri|R"
|
||||
vhdl_trans_list[pc] = instr_rr(opcode, reg[1], reg[0]);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rr(pc, opcode, reg[1], reg[0])
|
||||
minstr_comment = format("0x%3.3X: %s (R%2.2d), R%2.2d", pc, mnemo, reg[1], reg[0])
|
||||
when "MOVC|Ri|K", "MOVX|Ri|K", "COUT|Ri|K", "XOUT|Ri|K"
|
||||
kk = kk % 256;
|
||||
vhdl_trans_list[pc] = instr_rk(opcode, reg[0], kk);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rk(pc, opcode, reg[0], kk)
|
||||
minstr_comment = format("0x%3.3X: %s (R%2.2d), 0x%2.2X", pc, mnemo, reg[0], kk)
|
||||
when "MOVC|R|Ki", "MOVX|R|Ki", "CIN|R|Ki", "XIN|R|Ki"
|
||||
vhdl_trans_list[pc] = instr_rk(opcode, reg[0], kk);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rk(pc, opcode, reg[0], kk)
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d, (0x%2.2X)", pc, mnemo, reg[0], kk)
|
||||
when "MOV|R|K", "SUB|R|K", "SUBC|R|K", "ADD|R|K", "ADDC|R|K", "AND|R|K", "OR|R|K", "XOR|R|K", "CMP|R|K"
|
||||
kk = kk % 256;
|
||||
vhdl_trans_list[pc] = instr_rk(opcode, reg[0], kk);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rk(pc, opcode, reg[0], kk)
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d, 0x%2.2X", pc, mnemo, reg[0], kk)
|
||||
when "SUB|K|R", "SUBC|K|R"
|
||||
kk = kk % 256;
|
||||
vhdl_trans_list[pc] = instr_kr(opcode, kk, reg[1]);
|
||||
vhdl_tcl_list[pc] = tcl_bits_kr(pc, opcode, kk, reg[1])
|
||||
minstr_comment = format("0x%3.3X: %s 0x%2.2d, R%2.2X", pc, mnemo, kk, reg[1])
|
||||
when "MOVC|Ki|R", "MOVC|Ki|R", "MOVX|Ki|R", "MOVX|Ki|R", "COUT|Ki|R", "XOUT|Ki|R"
|
||||
vhdl_trans_list[pc] = instr_kr(opcode, kk, reg[1]);
|
||||
vhdl_tcl_list[pc] = tcl_bits_kr(pc, opcode, kk, reg[1])
|
||||
minstr_comment = format("0x%3.3X: %s (0x%2.2X), R%2.2d", pc, mnemo, kk, reg[1])
|
||||
when "CALL|K", "JMP|K", "JNZ|K", "JZ|K","JNC|K", "JC|K", "JLT|K", "JGT|K", "JLE|K", "JGE|K", "JEQ|K", "JNE|K"
|
||||
vhdl_trans_list[pc] = instr_k(opcode, kk)
|
||||
vhdl_tcl_list[pc] = tcl_bits_k(pc, opcode, kk)
|
||||
minstr_comment = format("0x%3.3X: %s 0x%3.3X", pc, mnemo, kk)
|
||||
when "PUSH|R", "POP|R", "SHR|R", "SHL|R", "ROR|R", "ROL|R", "RORC|R", "ROLC|R", "SWAP|R"
|
||||
vhdl_trans_list[pc] = instr_r(opcode, reg[0])
|
||||
vhdl_tcl_list[pc] = tcl_bits_r(pc, opcode, reg[0])
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d", pc, mnemo, reg[0])
|
||||
# Synthetic instructions
|
||||
when "CLRC"
|
||||
kk = 0;
|
||||
minstr_comment = format("0x%3.3X: %s", pc, mnemo)
|
||||
opcode = mnemo_list.rindex("SUB|R|K").to_i
|
||||
vhdl_trans_list[pc] = instr_rk(opcode, reg[0], kk);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rk(pc, opcode, reg[0], kk)
|
||||
when "TST|R"
|
||||
kk = 0
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d", pc, mnemo, reg[0])
|
||||
opcode = mnemo_list.rindex("CMP|R|K").to_i
|
||||
vhdl_trans_list[pc] = instr_rk(opcode, reg[0], kk);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rk(pc, opcode, reg[0], kk)
|
||||
when "NEG|R"
|
||||
kk = 0
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d", pc, mnemo, reg[0])
|
||||
opcode = mnemo_list.rindex("SUB|K|R").to_i
|
||||
vhdl_trans_list[pc] = instr_rk(opcode, reg[0], kk);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rk(pc, opcode, reg[0], kk)
|
||||
when "NOT|R"
|
||||
kk = 0
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d", pc, mnemo, reg[0])
|
||||
opcode = mnemo_list.rindex("XOR|R|K").to_i
|
||||
vhdl_trans_list[pc] = instr_rk(opcode, reg[0], kk);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rk(pc, opcode, reg[0], kk)
|
||||
when "INC|R"
|
||||
kk = 1
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d", pc, mnemo, reg[0])
|
||||
opcode = mnemo_list.rindex("ADD|R|K").to_i
|
||||
vhdl_trans_list[pc] = instr_rk(opcode, reg[0], kk);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rk(pc, opcode, reg[0], kk)
|
||||
when "DEC|R"
|
||||
kk = 1
|
||||
minstr_comment = format("0x%3.3X: %s R%2.2d", pc, mnemo, reg[0])
|
||||
opcode = mnemo_list.rindex("SUB|R|K").to_i
|
||||
vhdl_trans_list[pc] = instr_rk(opcode, reg[0], kk);
|
||||
vhdl_tcl_list[pc] = tcl_bits_rk(pc, opcode, reg[0], kk)
|
||||
else
|
||||
STDERR.puts format("%s: Error in line %d: Not yet implemented %s", instruct[5], instruct[0], format)
|
||||
error = true
|
||||
end
|
||||
|
||||
if error
|
||||
num_errors += 1
|
||||
break
|
||||
end
|
||||
|
||||
vhdl_comment_list[pc] = minstr_comment
|
||||
|
||||
puts vhdl_trans_list[pc] + " -- " + minstr_comment
|
||||
|
||||
pc += 1
|
||||
end
|
||||
|
||||
# --------------------------------------------------------
|
||||
# Output ROM file
|
||||
# --------------------------------------------------------
|
||||
if num_errors == 0
|
||||
|
||||
# I-ROM VHDL-ROM
|
||||
filename = format("%s.irom.vhdl.snip", PROJECT_NAME)
|
||||
file = File.open(filename, "w")
|
||||
|
||||
file.puts format("ENTITY %s IS\n", IROM_ENTITY_NAME)
|
||||
file.puts format("\tPort (\n")
|
||||
file.puts format("\tclk\t\t\t: in STD_LOGIC;\n")
|
||||
file.puts format("\tce\t\t\t: in STD_LOGIC;\n")
|
||||
file.puts format("\taddr\t\t: in %s;\n", IROM_ADDR_TYPE)
|
||||
file.puts format("\tdout\t\t: out %s\n", IROM_DATA_TYPE)
|
||||
file.puts format("\t);\n")
|
||||
file.puts format("END %s;\n", IROM_ENTITY_NAME)
|
||||
file.puts format("\n")
|
||||
file.puts format("ARCHITECTURE %s OF %s IS \n", PROJECT_NAME, IROM_ENTITY_NAME)
|
||||
file.puts format("\n")
|
||||
file.puts format("\ttype imem_rom_t is array (0 to %d) of %s;\n", [IROM_MAX_SIZE, pc].min-1 , IROM_DATA_TYPE)
|
||||
file.puts format("\n")
|
||||
file.puts format("\t-- Assembled from %s.%s", PROJECT_NAME, FILE_SUFFIX)
|
||||
file.puts format("\tconstant imem_rom : imem_rom_t :=\n")
|
||||
file.puts format("\t(\n");
|
||||
for i in (0..[IROM_MAX_SIZE, pc].min-2)
|
||||
file.puts "\t\t" + vhdl_trans_list[i] + ", -- " + vhdl_comment_list[i] + "\n"
|
||||
end;
|
||||
file.puts "\t\t" + vhdl_trans_list[pc-1] + " -- " + vhdl_comment_list[pc-1] + "\n"
|
||||
file.puts format("\t);\n")
|
||||
file.puts format("\n")
|
||||
file.puts format("begin")
|
||||
file.puts format("\n")
|
||||
file.puts format("PROM_READ:")
|
||||
file.puts format("\tprocess(clk, ce)\n")
|
||||
file.puts format("\tbegin\n")
|
||||
file.puts format("\t\tif rising_edge(clk) and ce = '1' then\n")
|
||||
file.puts format("\t\t\tdout <= imem_rom(to_integer(addr));\n")
|
||||
file.puts format("\t\tend if;\n")
|
||||
file.puts format("\tend process;\n")
|
||||
file.puts format("\n")
|
||||
file.puts format("end %s;\n", PROJECT_NAME)
|
||||
puts format("I-ROM file written to \"%s\"\n",filename)
|
||||
file.close
|
||||
|
||||
# I-ROM VHDL-ROM (loadable)
|
||||
filename = format("%s.irom_ld.vhdl.snip", PROJECT_NAME)
|
||||
file = File.open(filename, "w")
|
||||
|
||||
file.puts format("\n\t-- Assembled from %s.%s", PROJECT_NAME, FILE_SUFFIX)
|
||||
file.puts format("\ttype imem_rom_t is array (0 to %d) of %s;\n", IROM_MAX_SIZE-1, IROM_DATA_TYPE)
|
||||
file.puts format("\tsignal imem_rom : imem_rom_t :=\n")
|
||||
file.puts format("\t(\n");
|
||||
for i in (0..pc-2)
|
||||
file.puts "\t\t" + vhdl_trans_list[i] + ", -- " + vhdl_comment_list[i] + "\n"
|
||||
end;
|
||||
if pc < (IROM_MAX_SIZE-1)
|
||||
file.puts "\t\t" + vhdl_trans_list[pc-1] + ", -- " + vhdl_comment_list[pc-1] + "\n"
|
||||
for i in (pc..(IROM_MAX_SIZE-2))
|
||||
file.puts "\t\t" + instr(0) + ",\n"
|
||||
end;
|
||||
file.puts "\t\t" + instr(0) + "\n"
|
||||
else
|
||||
file.puts "\t\t" + vhdl_trans_list[pc-1] + " -- " + vhdl_comment_list[pc-1] + "\n"
|
||||
end
|
||||
file.puts format("\t);\n")
|
||||
puts format("I-ROM (loadable) file written to \"%s\"\n",filename)
|
||||
file.close
|
||||
|
||||
# I-ROM TCL-Loader
|
||||
filename = format("%s.irom.tcl.snip", PROJECT_NAME)
|
||||
file = File.open(filename, "w")
|
||||
file.puts format("# Assembled from %s.%s", PROJECT_NAME, FILE_SUFFIX)
|
||||
file.puts format("# ---------------------------------------------------------------");
|
||||
file.puts format("# Shift the USER1 Instruction (b1111000010) into the Instruction Register of FPGA");
|
||||
file.puts format("# User 1")
|
||||
file.puts format("set result [::chipscope::csejtag_tap shift_device_ir $handle $devid $CSE_OP $CSE_ES 0 $irlength \"3C2\"]\n\n")
|
||||
for i in (0..pc-1)
|
||||
# Chipscope 8.1
|
||||
# file.puts format("jtag_shiftdr $handle -buffer \"%s\" -endstate RTI -device $devid", vhdl_tcl_list[i].reverse);
|
||||
|
||||
# Chipscope 9.1
|
||||
file.puts format("\# %s", vhdl_comment_list[i])
|
||||
file.puts format("::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 %d \"%8.8X\"\n\n", vhdl_tcl_list[i].length, vhdl_tcl_list[i].to_i(2));
|
||||
end;
|
||||
puts format("I-ROM TCL-loader written to \"%s\"\n",filename)
|
||||
file.close
|
||||
|
||||
# X-ROM VHDL-ROM
|
||||
filename = format("%s.xrom.vhdl.snip", PROJECT_NAME)
|
||||
file = File.open(filename, "w")
|
||||
|
||||
file.puts format("ENTITY %s IS\n", XROM_ENTITY_NAME)
|
||||
file.puts format("\tPort (\n")
|
||||
file.puts format("\tclk\t\t\t: in STD_LOGIC;\n")
|
||||
file.puts format("\tce\t\t\t: in STD_LOGIC;\n")
|
||||
file.puts format("\taddr\t\t: in %s;\n", XROM_ADDR_TYPE)
|
||||
file.puts format("\tdout\t\t: out %s\n", XROM_DATA_TYPE)
|
||||
file.puts format("\t);\n")
|
||||
file.puts format("END %s;\n", XROM_ENTITY_NAME)
|
||||
file.puts format("\n")
|
||||
file.puts format("ARCHITECTURE %s OF %s IS \n", PROJECT_NAME, XROM_ENTITY_NAME)
|
||||
file.puts format("\n")
|
||||
file.puts format("\ttype xmem_rom_t is array (0 to %d) of %s;\n", XROM_MAX_SIZE-1, XROM_DATA_TYPE)
|
||||
file.puts format("\n")
|
||||
file.puts format("\t-- Assembled from %s.%s", PROJECT_NAME, FILE_SUFFIX)
|
||||
file.puts format("\tconstant xmem_rom : xmem_rom_t :=\n")
|
||||
file.puts format("\t(\n");
|
||||
for i in (0..XROM_MAX_SIZE-2)
|
||||
file.puts format("\t\tX\"%2.2X\", -- 0x%2.2X\n", first_pass.xmem[i], i)
|
||||
end;
|
||||
i = XROM_MAX_SIZE-1
|
||||
file.puts format("\t\tX\"%2.2X\" -- 0x%2.2X\n", first_pass.xmem[i], i)
|
||||
file.puts format("\t);\n")
|
||||
file.puts format("\n")
|
||||
file.puts format("begin")
|
||||
file.puts format("\n")
|
||||
file.puts format("PROM_READ:")
|
||||
file.puts format("\tprocess(clk, ce)\n")
|
||||
file.puts format("\tbegin\n")
|
||||
file.puts format("\t\tif rising_edge(clk) and ce = '1' then\n")
|
||||
file.puts format("\t\t\tdout <= xmem_rom(to_integer(addr));\n")
|
||||
file.puts format("\t\tend if;\n")
|
||||
file.puts format("\tend process;\n")
|
||||
file.puts format("\n")
|
||||
file.puts format("end %s;\n", PROJECT_NAME)
|
||||
puts format("X-ROM file written to \"%s\"\n",filename)
|
||||
file.close
|
||||
|
||||
# X-ROM VHDL-ROM (loadable)
|
||||
filename = format("%s.xrom_ld.vhdl.snip", PROJECT_NAME)
|
||||
file = File.open(filename, "w")
|
||||
|
||||
file.puts format("\n\t-- Assembled from %s.%s", PROJECT_NAME, FILE_SUFFIX)
|
||||
file.puts format("\ttype xmem_rom_t is array (0 to %d) of %s;\n", XROM_MAX_SIZE-1, XROM_DATA_TYPE)
|
||||
file.puts format("\tsignal xmem_rom : xmem_rom_t :=\n")
|
||||
file.puts format("\t(\n");
|
||||
for i in (0..XROM_MAX_SIZE-2)
|
||||
file.puts format("\t\tX\"%2.2X\", -- 0x%2.2X\n", first_pass.xmem[i], i)
|
||||
end;
|
||||
i = XROM_MAX_SIZE-1
|
||||
file.puts format("\t\tX\"%2.2X\" -- 0x%2.2X\n", first_pass.xmem[i], i)
|
||||
file.puts format("\t);\n")
|
||||
puts format("X-ROM (loadable) file written to \"%s\"\n",filename)
|
||||
file.close
|
||||
|
||||
# X-ROM TCL-Loader
|
||||
filename = format("%s.xrom.tcl.snip", PROJECT_NAME)
|
||||
file = File.open(filename, "w")
|
||||
file.puts format("# Assembled from %s.%s", PROJECT_NAME, FILE_SUFFIX)
|
||||
file.puts format("# ---------------------------------------------------------------");
|
||||
file.puts format("# Shift the USER2 Instruction (b1111000011) into the Instruction Register of FPGA");
|
||||
file.puts format("# User 2")
|
||||
file.puts format("set result [::chipscope::csejtag_tap shift_device_ir $handle $devid $CSE_OP $CSE_ES 0 $irlength \"3C3\"]\n\n")
|
||||
for i in (0..first_pass.xmem.length-1)
|
||||
# Chipscope 8.1
|
||||
# file.puts format("jtag_shiftdr $handle -buffer \"%s\" -endstate RTI -device $devid", vhdl_tcl_list[i].reverse);
|
||||
|
||||
# Chipscope 9.1
|
||||
file.puts format("::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 %d \"%2.2X%2.2X\"\n", 16, i, first_pass.xmem[i]);
|
||||
end;
|
||||
puts format("X-ROM TCL-loader written to \"%s\"\n",filename)
|
||||
file.close
|
||||
|
||||
end
|
||||
|
||||
# --------------------------------------------------------
|
||||
# Output final statistics
|
||||
# --------------------------------------------------------
|
||||
if num_errors == 0
|
||||
puts "Program uses #{first_pass.pc_max} instruction addresses"
|
||||
puts "No errors found"
|
||||
exit 0
|
||||
else
|
||||
puts "#{num_errors} errors found"
|
||||
exit 1
|
||||
end
|
||||
|
||||
@@ -0,0 +1,72 @@
|
||||
; -------------------------------------------------
|
||||
; lcd.inc.jsm
|
||||
; -------------------------------------------------
|
||||
; needs xio-address equates for
|
||||
; reg_cg_char_addr: equ 0xXX ; RW
|
||||
; reg_cg_line_addr: equ 0xXX ; RW
|
||||
; reg_cg_data: equ 0xXX ; RW
|
||||
; reg_cg_ctrl: equ 0xXX ; WO
|
||||
|
||||
; needs delay.inc.jsm
|
||||
|
||||
; -------------------------------------------------
|
||||
cg_clr_line: push R0
|
||||
mov R0, 2
|
||||
xout (reg_cg_ctrl), R0
|
||||
pop R0
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
cg_clr_screen: push R0
|
||||
mov R0, 1
|
||||
xout (reg_cg_ctrl), R0
|
||||
pop R0
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; R0 : char address
|
||||
; R1 : line address
|
||||
cg_set_addr: call cg_wait_rdy
|
||||
xout (reg_cg_line_addr), R1
|
||||
xout (reg_cg_char_addr), R0
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; R0 : character
|
||||
cg_putchar: call cg_wait_rdy
|
||||
xout (reg_cg_data), R0
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; R1 : ptr to string
|
||||
cg_puts: push R0
|
||||
cg_p_lp: movx R0, (R1)
|
||||
inc R1
|
||||
tst R0
|
||||
jz ex_cgp
|
||||
call cg_putchar
|
||||
jmp cg_p_lp
|
||||
ex_cgp: pop R0
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; R1 : ptr to string
|
||||
cg_clr_puts: call cg_clr_line
|
||||
call cg_puts
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; R1 : ptr to string
|
||||
cg_puts_clr: call cg_puts
|
||||
call cg_clr_line
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
cg_wait_rdy: push R0
|
||||
cg_wr_lp: xin R0, (reg_hwstat)
|
||||
and R0, 0x02
|
||||
jz cg_wr_lp
|
||||
pop R0
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
@@ -0,0 +1,7 @@
|
||||
; JCPU On-Chip register
|
||||
cpu_revision: equ 0x00 ; RO
|
||||
cpu_control: equ 0x01 ; R/W
|
||||
cpu_status: equ 0x02 ; RO
|
||||
cpu_int_ctrl: equ 0x03 ; RW
|
||||
cpu_cmem_high: equ 0x04 ; RW
|
||||
cpu_stack_high: equ 0x05 ; RW
|
||||
@@ -0,0 +1,64 @@
|
||||
; -------------------------------------------------
|
||||
; Delays
|
||||
; -------------------------------------------------
|
||||
delay1s: push R15
|
||||
mov R15, 10
|
||||
loop1s: call delay100ms
|
||||
dec R15
|
||||
jnz loop1s
|
||||
pop R15
|
||||
ret
|
||||
|
||||
delay100ms: push R15
|
||||
mov R15, 10
|
||||
loop100ms: call delay10ms
|
||||
dec R15
|
||||
jnz loop100ms
|
||||
pop R15
|
||||
ret
|
||||
|
||||
delay10ms: push R15
|
||||
mov R15, 10
|
||||
loop10ms: call delay1ms
|
||||
dec R15
|
||||
jnz loop10ms
|
||||
pop R15
|
||||
ret
|
||||
|
||||
delay1ms: push R15
|
||||
mov R15, 10
|
||||
loop1ms: call delay100us
|
||||
dec R15
|
||||
jnz loop1ms
|
||||
pop R15
|
||||
ret
|
||||
|
||||
delay100us: push R15
|
||||
mov R15, 10
|
||||
loop100us: call delay10us
|
||||
dec R15
|
||||
jnz loop100us
|
||||
pop R15
|
||||
ret
|
||||
|
||||
delay10us: push R15
|
||||
mov R15, 99
|
||||
loop10us: nop
|
||||
nop
|
||||
nop
|
||||
dec R15
|
||||
jnz loop10us
|
||||
pop R15
|
||||
ret
|
||||
|
||||
delay1us: push R15
|
||||
mov R15, 9
|
||||
loop1us: nop
|
||||
nop
|
||||
nop
|
||||
dec R15
|
||||
jnz loop1us
|
||||
pop R15
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
@@ -0,0 +1,208 @@
|
||||
; -------------------------------------------------
|
||||
; lcd.inc.jsm
|
||||
; -------------------------------------------------
|
||||
; needs xmem-address definition for
|
||||
; - lcd_port (LCD-Base)
|
||||
|
||||
; needs delay.inc.jsm
|
||||
|
||||
; -------------------------------------------------
|
||||
lcd_cmd: equ 0x00
|
||||
lcd_rd: equ 0x20
|
||||
lcd_data: equ 0x40
|
||||
lcd_enable: equ 0x80
|
||||
|
||||
LCD_CMD_Z1: equ 0x80
|
||||
LCD_CMD_Z2: equ 0xC0
|
||||
LCD_CMD_CLEAR: equ 0x01
|
||||
|
||||
; -------------------------------------------------
|
||||
; Init LCD
|
||||
; -------------------------------------------------
|
||||
LCD_init: mov R2, 0x00
|
||||
mov R0, 0x03
|
||||
call _write_lcd
|
||||
call delay10ms
|
||||
mov R2, 0x00
|
||||
mov R0, 0x03
|
||||
call _write_lcd
|
||||
call delay10ms
|
||||
|
||||
mov R2, 0x00
|
||||
mov R0, 0x02
|
||||
call _write_lcd
|
||||
call delay1ms
|
||||
|
||||
; 1. Function set: 4-Bit mode, two display lines
|
||||
mov R0, 0x28
|
||||
call LCD_writecmd
|
||||
|
||||
; 2. Display on, no cursor
|
||||
mov R0, 0x0C
|
||||
call LCD_writecmd
|
||||
|
||||
; 3. Cursor shift during write
|
||||
mov R0, 0x06
|
||||
call LCD_writecmd
|
||||
|
||||
; 4. Display clear
|
||||
mov R0, 0x01
|
||||
call LCD_writecmd
|
||||
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; LCD_waitbsy
|
||||
; -------------------------------------------------
|
||||
LCD_waitbsy: push R0
|
||||
bsy_loop: call LCD_readstat
|
||||
and R0, 0x80
|
||||
jz ex_bsy
|
||||
call delay1us
|
||||
jmp bsy_loop
|
||||
ex_bsy: pop R0
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; LCD_writecmd
|
||||
; -------------------------------------------------
|
||||
; R0 = cmd
|
||||
LCD_writeaddr:
|
||||
LCD_writecmd: push R2
|
||||
mov R2, lcd_cmd
|
||||
call LCD_write
|
||||
pop R2
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; LCD_putsx
|
||||
; -------------------------------------------------
|
||||
; R1 = address of null-terminated string in XMEM
|
||||
LCD_putsx: push R0
|
||||
putsx_loop: movx R0, (R1)
|
||||
inc R1
|
||||
tst R0
|
||||
jz putsx_ex
|
||||
call LCD_writechar
|
||||
jmp putsx_loop
|
||||
putsx_ex: pop R0
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; LCD_putsc
|
||||
; -------------------------------------------------
|
||||
; R1 = address of null-terminated string in CMEM
|
||||
LCD_putsc: push R0
|
||||
putsc_loop: movc R0, (R1)
|
||||
inc R1
|
||||
tst R0
|
||||
jz putsc_ex
|
||||
call LCD_writechar
|
||||
jmp putsc_loop
|
||||
putsc_ex: pop R0
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; LCD_writechar
|
||||
; -------------------------------------------------
|
||||
; R0 = char
|
||||
LCD_writedata:
|
||||
LCD_writechar: push R2
|
||||
mov R2, lcd_data
|
||||
call LCD_write
|
||||
pop R2
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; LCD_write
|
||||
; -------------------------------------------------
|
||||
; R0 = input
|
||||
; R2 = register
|
||||
LCD_write: call LCD_waitbsy
|
||||
push R0
|
||||
swap R0
|
||||
call _write_lcd
|
||||
pop R0
|
||||
call _write_lcd
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; LCD_readstat
|
||||
; -------------------------------------------------
|
||||
; R0 = status
|
||||
LCD_readstat: push R2
|
||||
mov R2, lcd_cmd
|
||||
call LCD_read
|
||||
pop R2
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; LCD_read
|
||||
; -------------------------------------------------
|
||||
; R0 = output
|
||||
; R2 = register
|
||||
LCD_read: call _read_lcd
|
||||
swap R0
|
||||
push R0
|
||||
call _read_lcd
|
||||
pop R2
|
||||
or R0, R2
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; _write
|
||||
; -------------------------------------------------
|
||||
; R0 = input
|
||||
_write_lcd: push R1
|
||||
|
||||
and R0, 0x0F
|
||||
mov R1, R0
|
||||
or R1, R2
|
||||
xout (lcd_port), R1
|
||||
call delay1us
|
||||
|
||||
mov R1, R0
|
||||
or R1, R2
|
||||
or R1, lcd_enable
|
||||
xout (lcd_port), R1
|
||||
call delay1us
|
||||
|
||||
mov R1, R0
|
||||
or R1, R2
|
||||
xout (lcd_port), R1
|
||||
call delay1us
|
||||
|
||||
or R1, lcd_rd
|
||||
xout (lcd_port), R1
|
||||
|
||||
pop R1
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; _read
|
||||
; -------------------------------------------------
|
||||
; R0 = output
|
||||
_read_lcd: push R1
|
||||
|
||||
mov R1, lcd_rd
|
||||
or R1, R2
|
||||
xout (lcd_port), R1
|
||||
call delay1us
|
||||
|
||||
mov R1, lcd_rd
|
||||
or R1, R2
|
||||
or R1, lcd_enable
|
||||
xout (lcd_port), R1
|
||||
call delay1us
|
||||
xin R0, (lcd_port)
|
||||
and R0, 0x0F
|
||||
|
||||
mov R1, lcd_rd
|
||||
or R1, R2
|
||||
xout (lcd_port), R1
|
||||
call delay1us
|
||||
|
||||
pop R1
|
||||
ret
|
||||
|
||||
|
||||
@@ -0,0 +1,42 @@
|
||||
; -------------------------------------------------
|
||||
; mul8x8.inc.jsm
|
||||
; -------------------------------------------------
|
||||
|
||||
; -------------------------------------------------
|
||||
; Parameter:
|
||||
; R0 : operand 1
|
||||
; R1 : operand 2
|
||||
; Return:
|
||||
; R0 : product low
|
||||
; R1 : product high
|
||||
mul8x8: push R2
|
||||
push R3
|
||||
push R4
|
||||
|
||||
mov R4, R1
|
||||
mov R1, 0
|
||||
mov R2, 0
|
||||
mov R3, 0
|
||||
|
||||
loop1: cmp R4, 0x01
|
||||
jeq ende1
|
||||
|
||||
shr R4
|
||||
jnc next1
|
||||
|
||||
add R2, R0
|
||||
addc R3, R1
|
||||
|
||||
next1: shl R0
|
||||
rolc R1
|
||||
jmp loop1
|
||||
|
||||
ende1: add R0, R2
|
||||
addc R1, R3
|
||||
|
||||
pop R4
|
||||
pop R3
|
||||
pop R2
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
@@ -0,0 +1,32 @@
|
||||
; -------------------------------------------------
|
||||
; uart.inc.jsm
|
||||
; -------------------------------------------------
|
||||
; needs xmem-address definition for
|
||||
; - uart_status (Status register)
|
||||
; - uart_data (Data register)
|
||||
|
||||
; -------------------------------------------------
|
||||
; sout
|
||||
; -------------------------------------------------
|
||||
; R0 = input
|
||||
sout: push R1
|
||||
sout1: xin R1, (uart_status)
|
||||
and R1, 0x02
|
||||
jnz sout1
|
||||
xout (uart_data), R0
|
||||
pop R1
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; sin
|
||||
; -------------------------------------------------
|
||||
; R0 = output
|
||||
sin: push R1
|
||||
sin1: xin R1, (uart_status)
|
||||
and R1, 0x10
|
||||
jnz sin1
|
||||
xin R0, (uart_data)
|
||||
pop R1
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
@@ -0,0 +1,32 @@
|
||||
; -------------------------------------------------
|
||||
; utils.inc.jsm
|
||||
; -------------------------------------------------
|
||||
|
||||
|
||||
; -------------------------------------------------
|
||||
; Parameter
|
||||
; R0 : Bin value in lower nibble
|
||||
; Return
|
||||
; R0 : Hex character representing lower nibble
|
||||
nibble2hex: and R0, 0x0F
|
||||
cmp R0, 0x0A
|
||||
jlt isNum1
|
||||
add R0, 0x07
|
||||
isNum1: add R0, 0x30
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
; Parameter
|
||||
; R0 : Bin value
|
||||
; Return
|
||||
; R0 : Hex character high
|
||||
; R1 : Hex character low
|
||||
bin2hex: push R0
|
||||
call nibble2hex
|
||||
mov R1, R0
|
||||
pop R0
|
||||
swap R0
|
||||
call nibble2hex
|
||||
ret
|
||||
|
||||
; -------------------------------------------------
|
||||
@@ -0,0 +1,64 @@
|
||||
0 NOP
|
||||
1 HALT
|
||||
2 MOV|R|R
|
||||
3 MOV|R|K
|
||||
4 MOVX|R|Ri
|
||||
5 MOVX|R|Ki
|
||||
6 MOVX|Ri|R
|
||||
7 MOVX|Ri|K
|
||||
8 MOVX|Ki|R
|
||||
9 MOVC|R|Ri
|
||||
10 MOVC|R|Ki
|
||||
11 MOVC|Ri|R
|
||||
12 MOVC|Ri|K
|
||||
13 MOVC|Ki|R
|
||||
14 CMP|R|R
|
||||
15 CMP|R|K
|
||||
16 ADD|R|R
|
||||
17 ADD|R|K
|
||||
18 ADDC|R|R
|
||||
19 ADDC|R|K
|
||||
20 SUB|R|R
|
||||
21 SUB|R|K
|
||||
22 SUBC|R|R
|
||||
23 SUBC|R|K
|
||||
24 AND|R|R
|
||||
25 AND|R|K
|
||||
26 OR|R|R
|
||||
27 OR|R|K
|
||||
28 XOR|R|R
|
||||
29 XOR|R|K
|
||||
30 SHL|R
|
||||
31 SHR|R
|
||||
32 ROL|R
|
||||
33 ROR|R
|
||||
34 ROLC|R
|
||||
35 RORC|R
|
||||
36 XOUT|Ki|R
|
||||
37 XOUT|Ri|K
|
||||
38 COUT|Ki|R
|
||||
39 COUT|Ri|K
|
||||
40 XIN|R|Ki
|
||||
41 CIN|R|Ki
|
||||
42 SWAP|R
|
||||
43 SETC
|
||||
44 UNDEF
|
||||
45 UNDEF
|
||||
46 SUB|K|R
|
||||
47 SUBC|K|R
|
||||
48 JMP|K
|
||||
49 JZ|K
|
||||
50 JNZ|K
|
||||
51 JC|K
|
||||
52 JNC|K
|
||||
53 JLT|K
|
||||
54 JGT|K
|
||||
55 JLE|K
|
||||
56 JGE|K
|
||||
57 JEQ|K
|
||||
58 JNE|K
|
||||
59 CALL|K
|
||||
60 PUSH|R
|
||||
61 POP|R
|
||||
62 RET
|
||||
63 RETI
|
||||
@@ -0,0 +1,20 @@
|
||||
#!/usr/bin/env ruby
|
||||
|
||||
st = "\033[7m"
|
||||
en = "\033[m"
|
||||
|
||||
while TRUE
|
||||
print "str> "
|
||||
STDOUT.flush
|
||||
str = gets
|
||||
break if not str
|
||||
str.chop!
|
||||
print "pat> "
|
||||
STDOUT.flush
|
||||
re = gets
|
||||
break if not re
|
||||
re.chop!
|
||||
str.gsub! re, "#{st}\\&#{en}"
|
||||
print str, "\n"
|
||||
end
|
||||
print "\n"
|
||||
@@ -0,0 +1,61 @@
|
||||
# ----------------------------------------------------------------------
|
||||
# Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
# This file: The ROM file for upload to target over JTAG
|
||||
#
|
||||
# Copyright (C) 2007 J. Ahrensfeld
|
||||
#
|
||||
# This program is free software: you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation, either version 3 of the License, or
|
||||
# (at your option) any later version.
|
||||
#
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
#
|
||||
# For questions and ideas, please contact the author at jens@jayfield.org
|
||||
#
|
||||
# ---------------------------------------------------------------------
|
||||
|
||||
# ---------------------------------------------------------------------
|
||||
# For Chipscope 9.1
|
||||
# ---------------------------------------------------------------------
|
||||
# Source JTAG/TCL frame work
|
||||
cd $env(CHIPSCOPE)\\bin\\nt
|
||||
source csejtag.tcl
|
||||
|
||||
namespace import ::chipscope::*
|
||||
|
||||
# Platform USB Cable
|
||||
set PLATFORM_USB_CABLE_ARGS [list "port=USB2" "frequency=6000000"]
|
||||
# frequency="24000000 | 12000000 | 6000000 | 3000000 | 1500000 | 750000"
|
||||
|
||||
# Create session
|
||||
set handle [::chipscope::csejtag_session create 0]
|
||||
|
||||
# Open JTAG and lock
|
||||
set open_result [::chipscope::csejtag_target open $handle $CSEJTAG_TARGET_PLATFORMUSB 0 $PLATFORM_USB_CABLE_ARGS]
|
||||
set lock_result [::chipscope::csejtag_target lock $handle 1000]
|
||||
|
||||
set devlist [::chipscope::csejtag_tap autodetect_chain $handle $CSEJTAG_SCAN_DEFAULT]
|
||||
|
||||
# Get Device ID
|
||||
set devtype "Virtex-4SX"
|
||||
set devid 2
|
||||
set irlength [::chipscope::csejtag_tap get_irlength $handle $devid]
|
||||
set idcode [::chipscope::csejtag_tap get_device_idcode $handle $devid]
|
||||
|
||||
set CSE_OP $CSEJTAG_SHIFT_READWRITE
|
||||
set CSE_ES $CSEJTAG_RUN_TEST_IDLE
|
||||
|
||||
# Write Program
|
||||
# JASM_ROM_INSERT_HERE
|
||||
|
||||
::chipscope::csejtag_target unlock $handle
|
||||
::chipscope::csejtag_target close $handle
|
||||
::chipscope::csejtag_session destroy $handle
|
||||
exit
|
||||
@@ -0,0 +1,44 @@
|
||||
#!/usr/bin/env ruby
|
||||
|
||||
|
||||
template = <<'END'
|
||||
-- (tv #1342) read output FIFO
|
||||
(
|
||||
cycles => 1,
|
||||
cm_i => bus_read_init(addr => ADDR_KS_OFIFO_DOUT),
|
||||
sep => msg(""),
|
||||
cm_o => bus_no_ack,
|
||||
irq => (others => '0')
|
||||
),
|
||||
|
||||
-- (tv #1343) wait while FIFO is read
|
||||
(
|
||||
cycles => 2,
|
||||
cm_i => bus_wait_ack,
|
||||
sep => msg(""),
|
||||
cm_o => bus_no_ack,
|
||||
irq => (others => '0')
|
||||
),
|
||||
|
||||
-- (tv #1343) wait for ack
|
||||
(
|
||||
cycles => 1,
|
||||
cm_i => bus_wait_ack,
|
||||
sep => msg(""),
|
||||
cm_o => bus_read_ack(dat => #{exp_data}),
|
||||
irq => (others => '0')
|
||||
),
|
||||
|
||||
END
|
||||
|
||||
puts "KS-128 testvectors:\n"
|
||||
puts "\n" * 3
|
||||
|
||||
|
||||
0.upto(10) { |sk_no|
|
||||
3.downto(0) { |sl_no|
|
||||
exp_data = "slice_32(TC1_SUBKEYS(#{sk_no}), #{sl_no})"
|
||||
t = template.gsub(/"/, '\\"')
|
||||
puts eval("format(\"#{t}\")")
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,32 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The ROM file for use in your VHDL design
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
-- JASM_ROM_INSERT_HERE
|
||||
|
||||
@@ -0,0 +1,151 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: loadable ROM
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
library UNISIM;
|
||||
use UNISIM.VComponents.all;
|
||||
|
||||
library work;
|
||||
use work.cpu_pkg.all;
|
||||
|
||||
ENTITY xrom IS
|
||||
Port (
|
||||
clk : in STD_LOGIC;
|
||||
ce : in STD_LOGIC;
|
||||
addr : in dmem_addr_t;
|
||||
dout : out dmem_data_t
|
||||
);
|
||||
|
||||
END xrom;
|
||||
|
||||
ARCHITECTURE loadable OF xrom IS
|
||||
|
||||
-- JASM_ROM_INSERT_HERE
|
||||
|
||||
signal jtag_ld_clk : STD_LOGIC;
|
||||
signal jtag_ld_we : STD_LOGIC;
|
||||
signal jtag_ld_addr : dmem_addr_t;
|
||||
signal jtag_ld_dout : dmem_data_t;
|
||||
signal jtag_ld_din : dmem_data_t;
|
||||
signal bs_rst, bs_sel, bs_shift, bs_tdi, bs_tdo : std_logic;
|
||||
signal bs_capture, bs_clk0, bs_clk1, bs_update0, bs_update1 : std_logic;
|
||||
signal user_regi, user_rego : unsigned (15 downto 0);
|
||||
constant id : unsigned (15 downto 0) := X"BEEF";
|
||||
|
||||
begin
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- Virtex-4: JTAG Loader
|
||||
--------------------------------------------------------------------------
|
||||
i00_BUFG : BUFG
|
||||
port map
|
||||
(
|
||||
O => bs_clk1,
|
||||
I => bs_clk0
|
||||
);
|
||||
|
||||
i01_BUFG : BUFG
|
||||
port map
|
||||
(
|
||||
O => bs_update1,
|
||||
I => bs_update0
|
||||
);
|
||||
|
||||
BSCAN_VIRTEX4_inst2 : BSCAN_VIRTEX4
|
||||
generic map
|
||||
(
|
||||
JTAG_CHAIN => 2 -- Value to set BSCAN site of device. Possible values: (1,2,3 or 4)
|
||||
)
|
||||
port map
|
||||
(
|
||||
CAPTURE => bs_capture, -- CAPTURE output from TAP controller
|
||||
DRCK => bs_clk0, -- Data register output for USER functions
|
||||
RESET => bs_rst, -- Reset output from TAP controller
|
||||
SEL => bs_sel, -- USER active output
|
||||
SHIFT => bs_shift, -- SHIFT output from TAP controller
|
||||
TDI => bs_tdi, -- TDI output from TAP controller
|
||||
UPDATE => bs_update0, -- UPDATE output from TAP controller
|
||||
TDO => bs_tdo -- Data input for USER function
|
||||
);
|
||||
|
||||
jtag_ld_addr <= user_regi(user_regi'left downto user_regi'left-dmem_data_t'length+1);
|
||||
jtag_ld_din <= user_regi(dmem_data_t'left downto 0);
|
||||
jtag_ld_clk <= bs_update1;
|
||||
jtag_ld_we <= bs_sel;
|
||||
|
||||
sipo:
|
||||
process (bs_rst, bs_clk1, bs_tdi, bs_shift)
|
||||
begin
|
||||
if bs_rst = '1' then
|
||||
user_regi <= (others => '0');
|
||||
elsif rising_edge(bs_clk1) then
|
||||
if bs_shift = '1' then
|
||||
user_regi <= bs_tdi & user_regi(user_regi'left downto 1);
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
piso:
|
||||
process (bs_rst, bs_clk1, bs_shift, user_rego)
|
||||
begin
|
||||
bs_tdo <= user_rego(0);
|
||||
if bs_rst = '1' then
|
||||
user_rego <= (others => '0');
|
||||
elsif rising_edge(bs_clk1) then
|
||||
if bs_shift = '1' then
|
||||
user_rego <= user_rego(0) & user_rego(user_rego'left downto 1);
|
||||
else
|
||||
user_rego <= (user_rego'left downto dmem_data_t'length => '0') & jtag_ld_dout;
|
||||
-- user_rego <= id;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- ROM Read/Write
|
||||
--------------------------------------------------------------------------
|
||||
PROM_READ:
|
||||
process(clk, ce)
|
||||
begin
|
||||
if rising_edge(clk) and ce = '1' then
|
||||
dout <= xmem_rom(to_integer(addr));
|
||||
end if;
|
||||
end process;
|
||||
|
||||
PROM_WRITE:
|
||||
process(jtag_ld_clk, jtag_ld_we)
|
||||
begin
|
||||
if rising_edge(jtag_ld_clk) then
|
||||
if jtag_ld_we = '1' then
|
||||
xmem_rom(to_integer(jtag_ld_addr)) <= jtag_ld_din;
|
||||
else
|
||||
jtag_ld_dout <= xmem_rom(to_integer(jtag_ld_addr));
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
end loadable;
|
||||
Binary file not shown.
@@ -0,0 +1,15 @@
|
||||
## NOTE: Do not edit this file.
|
||||
##
|
||||
vlib work
|
||||
vcom -explicit -93 "../../../PCK_FIO-1.16/PCK_FIO.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_types.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_instr.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_muldiv.vhd"
|
||||
vcom -explicit -93 "../src/tb_mips_muldiv.vhd"
|
||||
vsim -t 1ps -lib work tb_mips_muldiv
|
||||
do {tb_mips_muldiv.wdo}
|
||||
view wave
|
||||
|
||||
view structure
|
||||
view signals
|
||||
run 8ms
|
||||
@@ -0,0 +1,78 @@
|
||||
onerror {resume}
|
||||
quietly WaveActivateNextPane {} 0
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/rst
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/clk
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/mul_divn
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/start
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/busy
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/s_un
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/ref_hi
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/din_hi
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/din_lo
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/hilo_sel
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/hilo_we
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/dout
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/ref_result
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/md_result
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/check
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/uut/pre_sum_vld
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/uut/mul_en
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/uut/sum_en
|
||||
add wave -noupdate -divider FSM
|
||||
add wave -noupdate -format Literal /tb_mips_muldiv/uut/cycle_cnt
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/uut/cycle_cnt_load
|
||||
add wave -noupdate -format Literal /tb_mips_muldiv/uut/cycle_cnt_preset
|
||||
add wave -noupdate -format Literal /tb_mips_muldiv/uut/s
|
||||
add wave -noupdate -format Literal /tb_mips_muldiv/uut/sn
|
||||
add wave -noupdate -divider {Multiplier internals}
|
||||
add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_muldiv/uut/pprod
|
||||
add wave -noupdate -format Literal /tb_mips_muldiv/uut/ppadd_cyi
|
||||
add wave -noupdate -format Literal /tb_mips_muldiv/uut/ppadd_cyo
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/ppadd_op1
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/ppadd_op2
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/ppadd_res
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/pp_op2
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/pp_op2_r
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/add_op1
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/add_op2
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/add_res
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/pp_reg
|
||||
add wave -noupdate -divider {Divider internals}
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/busy
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/s_un
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/uut/div_start
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/din_hi
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/din_lo
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/result
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/uut/div_add_cyi
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/div_add_op1
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/div_add_op2
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/div_add_res
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/div_m
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/div_m_n
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/div_a
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/uut/div_q
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/uut/div_qbit
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/uut/div_en
|
||||
add wave -noupdate -divider FSM
|
||||
add wave -noupdate -format Literal /tb_mips_muldiv/uut/cycle_cnt
|
||||
add wave -noupdate -format Logic /tb_mips_muldiv/uut/cycle_cnt_load
|
||||
add wave -noupdate -format Literal /tb_mips_muldiv/uut/cycle_cnt_preset
|
||||
add wave -noupdate -format Literal /tb_mips_muldiv/uut/s
|
||||
add wave -noupdate -format Literal /tb_mips_muldiv/uut/sn
|
||||
TreeUpdate [SetDefaultTree]
|
||||
WaveRestoreCursors {{Cursor 1} {7735999838 ps} 0} {{Cursor 2} {512321 ps} 0}
|
||||
configure wave -namecolwidth 149
|
||||
configure wave -valuecolwidth 171
|
||||
configure wave -justifyvalue left
|
||||
configure wave -signalnamewidth 1
|
||||
configure wave -snapdistance 10
|
||||
configure wave -datasetprefix 0
|
||||
configure wave -rowmargin 4
|
||||
configure wave -childrowmargin 2
|
||||
configure wave -gridoffset 0
|
||||
configure wave -gridperiod 100
|
||||
configure wave -griddelta 40
|
||||
configure wave -timeline 1
|
||||
update
|
||||
WaveRestoreZoom {0 ps} {8400 us}
|
||||
@@ -0,0 +1,39 @@
|
||||
## NOTE: Do not edit this file.
|
||||
##
|
||||
vlib work
|
||||
|
||||
# Misc
|
||||
vcom -explicit -93 "../../../PCK_FIO-1.16/PCK_FIO.vhd"
|
||||
|
||||
# RAMS
|
||||
vcom -explicit -93 "../../../misc/dpram_2w2r.vhd"
|
||||
vcom -explicit -93 "../../../misc/dpram_1w1r.vhd"
|
||||
vcom -explicit -93 "../../../misc/dpram_1w1r_dist.vhd"
|
||||
|
||||
# FIFOS
|
||||
vcom -explicit -93 "../../../FIFO/src/fifo_ctrl_pkg.vhd"
|
||||
vcom -explicit -93 "../../../FIFO/src/sync_fifo_ctrl.vhd"
|
||||
vcom -explicit -93 "../../../FIFO/src/fifo_sync_dist.vhd"
|
||||
|
||||
# MIPS
|
||||
vcom -explicit -93 "../src/core/mips_types.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_instr.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_idecode_rom.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_reg.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_shifter.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_alu.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_muldiv.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_cop.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_icache.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_dcache.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_biu.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_bcu.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_pipeline.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_top.vhd"
|
||||
vcom -explicit -93 "../src/tb_mips_top.vhd"
|
||||
vsim -t 1ps -lib work tb_mips_top
|
||||
do {tb_mips_top.wdo}
|
||||
view wave
|
||||
view structure
|
||||
view signals
|
||||
run 40000ns
|
||||
@@ -0,0 +1,42 @@
|
||||
onerror {resume}
|
||||
quietly WaveActivateNextPane {} 0
|
||||
add wave -noupdate -divider {TOP interface}
|
||||
add wave -noupdate -format Literal /tb_mips_top/debug
|
||||
add wave -noupdate -format Logic /tb_mips_top/rst_i
|
||||
add wave -noupdate -format Logic /tb_mips_top/clk_i
|
||||
add wave -noupdate -format Logic /tb_mips_top/ack_i
|
||||
add wave -noupdate -format Logic /tb_mips_top/srdy_i
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/addr_o
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/dat_i
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/dat_o
|
||||
add wave -noupdate -format Logic /tb_mips_top/we_o
|
||||
add wave -noupdate -format Literal /tb_mips_top/sel_o
|
||||
add wave -noupdate -format Logic /tb_mips_top/cyc_o
|
||||
add wave -noupdate -format Logic /tb_mips_top/stb_o
|
||||
add wave -noupdate -format Logic /tb_mips_top/mrdy_o
|
||||
add wave -noupdate -format Literal /tb_mips_top/int
|
||||
add wave -noupdate -divider ALU
|
||||
add wave -noupdate -format Literal /tb_mips_top/uut/inst_pipeline/hdu
|
||||
add wave -noupdate -divider PC
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/uut/inst_pipeline/pc
|
||||
add wave -noupdate -divider PC
|
||||
add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_top/uut/inst_pipeline/id_stage
|
||||
add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_top/uut/inst_pipeline/ex_stage
|
||||
add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_top/uut/inst_pipeline/mem_stage
|
||||
add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_top/uut/inst_pipeline/wb_stage
|
||||
TreeUpdate [SetDefaultTree]
|
||||
WaveRestoreCursors {{Cursor 1} {21313433 ps} 0}
|
||||
configure wave -namecolwidth 188
|
||||
configure wave -valuecolwidth 100
|
||||
configure wave -justifyvalue left
|
||||
configure wave -signalnamewidth 1
|
||||
configure wave -snapdistance 10
|
||||
configure wave -datasetprefix 0
|
||||
configure wave -rowmargin 4
|
||||
configure wave -childrowmargin 2
|
||||
configure wave -gridoffset 0
|
||||
configure wave -gridperiod 100
|
||||
configure wave -griddelta 40
|
||||
configure wave -timeline 1
|
||||
update
|
||||
WaveRestoreZoom {0 ps} {42 us}
|
||||
@@ -0,0 +1,17 @@
|
||||
## NOTE: Do not edit this file.
|
||||
##
|
||||
vlib work
|
||||
## Compile Post-Map Model
|
||||
vcom -explicit -93 "../syn/ise9/netgen/par/mips_top_syn_timesim.vhd"
|
||||
vsim -t 1ps -sdfmax "/mips_top_syn=../syn/ise9/netgen/par/mips_top_syn_timesim.sdf" -lib work mips_top_syn
|
||||
vcom -explicit -93 "../src/core/mips_types.vhd"
|
||||
vcom -explicit -93 "../src/core/mips_instr.vhd"
|
||||
vcom -explicit -93 "../src/irom_hello.vhd"
|
||||
vcom -explicit -93 "../src/tb_mips_top_syn.vhd"
|
||||
vsim -t 1ps -lib work tb_mips_top_syn
|
||||
do {tb_mips_top_syn.wdo}
|
||||
view wave
|
||||
#add wave *
|
||||
view structure
|
||||
view signals
|
||||
run 2400ns
|
||||
@@ -0,0 +1,31 @@
|
||||
onerror {resume}
|
||||
quietly WaveActivateNextPane {} 0
|
||||
add wave -noupdate -format Logic /tb_mips_top_syn/rst
|
||||
add wave -noupdate -format Logic /tb_mips_top_syn/clk
|
||||
add wave -noupdate -format Logic /tb_mips_top_syn/ce
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top_syn/irom_data
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top_syn/irom_addr
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top_syn/dmem_din
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top_syn/dmem_dout
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top_syn/dmem_addr
|
||||
add wave -noupdate -format Logic /tb_mips_top_syn/dmem_we
|
||||
add wave -noupdate -format Logic /tb_mips_top_syn/dmem_re
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top_syn/uut/inst_mips_top_inst_pipeline_id_stage_boff
|
||||
add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top_syn/uut/inst_mips_top_inst_pipeline_stage_ex_inst_alu_sum_res
|
||||
add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_top_syn/sram
|
||||
TreeUpdate [SetDefaultTree]
|
||||
WaveRestoreCursors {{Cursor 1} {118199 ps} 0}
|
||||
configure wave -namecolwidth 188
|
||||
configure wave -valuecolwidth 100
|
||||
configure wave -justifyvalue left
|
||||
configure wave -signalnamewidth 1
|
||||
configure wave -snapdistance 10
|
||||
configure wave -datasetprefix 0
|
||||
configure wave -rowmargin 4
|
||||
configure wave -childrowmargin 2
|
||||
configure wave -gridoffset 0
|
||||
configure wave -gridperiod 100
|
||||
configure wave -griddelta 40
|
||||
configure wave -timeline 1
|
||||
update
|
||||
WaveRestoreZoom {0 ps} {2520 ns}
|
||||
@@ -0,0 +1,431 @@
|
||||
LIBRARY IEEE;
|
||||
USE IEEE.STD_LOGIC_1164.ALL;
|
||||
USE IEEE.NUMERIC_STD.ALL;
|
||||
use IEEE.MATH_REAL.ALL;
|
||||
|
||||
library work;
|
||||
use work.mips_types.all;
|
||||
|
||||
ENTITY dcache IS
|
||||
Generic
|
||||
(
|
||||
cache_size : natural := 2048; -- words
|
||||
line_size : natural := 8 -- words
|
||||
);
|
||||
Port
|
||||
(
|
||||
RST_I : in STD_LOGIC;
|
||||
CLK_I : in STD_LOGIC;
|
||||
ACK_I : in STD_LOGIC;
|
||||
SRDY_I : in STD_LOGIC;
|
||||
ADDR_O : out word_t;
|
||||
DAT_I : in word_t;
|
||||
STB_O : out STD_LOGIC;
|
||||
CYC_O : out STD_LOGIC;
|
||||
en : in STD_LOGIC;
|
||||
cpu_en : in STD_LOGIC;
|
||||
cpu_we : in STD_LOGIC;
|
||||
cpu_be : in unsigned(3 downto 0);
|
||||
cpu_addr : in word_t;
|
||||
cpu_din : in word_t;
|
||||
cpu_dout : out word_t;
|
||||
cpu_busy : out STD_LOGIC
|
||||
);
|
||||
END dcache;
|
||||
|
||||
ARCHITECTURE behavior OF dcache IS
|
||||
|
||||
COMPONENT dpram_1w1r
|
||||
GENERIC
|
||||
(
|
||||
addr_width : integer := 3;
|
||||
data_width : integer := 8
|
||||
);
|
||||
PORT (
|
||||
clka : in STD_LOGIC;
|
||||
clkb : in STD_LOGIC;
|
||||
en_a : in STD_LOGIC;
|
||||
en_b : in STD_LOGIC;
|
||||
we_a : in STD_LOGIC;
|
||||
addr_a : in unsigned (addr_width-1 downto 0);
|
||||
addr_b : in unsigned (addr_width-1 downto 0);
|
||||
din_a : in unsigned (data_width-1 downto 0);
|
||||
dout_b : out unsigned (data_width-1 downto 0)
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
COMPONENT dpram_2w2r is
|
||||
GENERIC
|
||||
(
|
||||
addr_width : integer := 3;
|
||||
data_width : integer := 8
|
||||
);
|
||||
PORT
|
||||
(
|
||||
clk_a : in STD_LOGIC;
|
||||
clk_b : in STD_LOGIC;
|
||||
en_a : in STD_LOGIC;
|
||||
en_b : in STD_LOGIC;
|
||||
we_a : in STD_LOGIC;
|
||||
we_b : in STD_LOGIC;
|
||||
addr_a : in unsigned (addr_width-1 downto 0);
|
||||
addr_b : in unsigned (addr_width-1 downto 0);
|
||||
din_a : in unsigned (data_width-1 downto 0);
|
||||
din_b : in unsigned (data_width-1 downto 0);
|
||||
dout_a : out unsigned (data_width-1 downto 0);
|
||||
dout_b : out unsigned (data_width-1 downto 0)
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
function lg2(x : natural) return natural is
|
||||
begin
|
||||
return natural(ceil(log2(real(x))));
|
||||
end lg2;
|
||||
|
||||
function po2(x : natural) return natural is
|
||||
begin
|
||||
|
||||
return 2**lg2(x);
|
||||
end po2;
|
||||
|
||||
constant word_index_width : natural := lg2(line_size);
|
||||
constant cache_index_width : natural := lg2(cache_size) - word_index_width;
|
||||
constant tag_width : natural := 32 - word_index_width - cache_index_width - 2;
|
||||
constant tag_parity_width : natural := 3;
|
||||
constant tram_data_width : natural := 1 + tag_parity_width + tag_width;
|
||||
constant tram_addr_width : natural := cache_index_width;
|
||||
|
||||
subtype tram_data_t is unsigned (tram_data_width-1 downto 0);
|
||||
|
||||
type dcache_entry_t is record
|
||||
valid : std_logic;
|
||||
tv_p : unsigned(tag_parity_width-1 downto 0);
|
||||
tag : unsigned(tag_width-1 downto 0);
|
||||
end record;
|
||||
|
||||
alias cpu_word_index is cpu_addr(word_index_width+1 downto 2);
|
||||
alias cpu_cache_index is cpu_addr(cache_index_width+word_index_width+1 downto word_index_width+2);
|
||||
alias cpu_tag is cpu_addr(tag_width+cache_index_width+word_index_width+1 downto cache_index_width+word_index_width+2);
|
||||
|
||||
function to_dcache_entry(x : tram_data_t) return dcache_entry_t is
|
||||
variable result : dcache_entry_t;
|
||||
begin
|
||||
result.valid := x(0);
|
||||
result.tv_p := x(3 downto 1);
|
||||
result.tag := x(tag_width+3 downto 4);
|
||||
|
||||
return result;
|
||||
end to_dcache_entry;
|
||||
|
||||
function to_tram_data(x : dcache_entry_t) return tram_data_t is
|
||||
variable result : tram_data_t;
|
||||
begin
|
||||
result(0) := x.valid;
|
||||
result(3 downto 1) := x.tv_p;
|
||||
result(tag_width+3 downto 4) := x.tag;
|
||||
|
||||
return result;
|
||||
end to_tram_data;
|
||||
|
||||
type cache_state_t is (init, ready, flush, mem_request, mem_access, mem_wait, mem_data, upd_cache, rd_cache);
|
||||
signal s, sn : cache_state_t;
|
||||
|
||||
signal cache_busy : std_logic;
|
||||
signal cache_hit : std_logic;
|
||||
signal tag_match : std_logic;
|
||||
signal word_index_reg : unsigned(word_index_width-1 downto 0);
|
||||
signal cache_index_reg : unsigned(cache_index_width-1 downto 0);
|
||||
signal tag_index_reg : unsigned(tag_width-1 downto 0);
|
||||
|
||||
signal cache_entry_in : dcache_entry_t;
|
||||
signal cache_entry_out : dcache_entry_t;
|
||||
signal cpu_dram_addr : unsigned(lg2(cache_size)-1 downto 0);
|
||||
signal cpu_dram_dout : word_t;
|
||||
signal cpu_dram_din : word_t;
|
||||
signal cpu_data_reg : word_t;
|
||||
signal cpu_be_reg : unsigned(3 downto 0);
|
||||
signal cpu_we_reg : std_logic;
|
||||
signal ctrl_dram_en : std_logic;
|
||||
signal ctrl_dram_addr : unsigned(lg2(cache_size)-1 downto 0);
|
||||
signal ctrl_dram_din : word_t;
|
||||
signal ctrl_dram_we : unsigned(3 downto 0);
|
||||
signal cpu_dram_we : unsigned(3 downto 0);
|
||||
signal cpu_dram_en : std_logic;
|
||||
signal cpu_en2 : std_logic;
|
||||
signal cpu_we2 : std_logic;
|
||||
|
||||
signal tram_addr_rd : unsigned(cache_index_width-1 downto 0);
|
||||
signal tram_dout : tram_data_t;
|
||||
signal tram_addr_wr : unsigned(cache_index_width-1 downto 0);
|
||||
signal tram_din : tram_data_t;
|
||||
signal tram_re : std_logic;
|
||||
signal tram_we : std_logic;
|
||||
|
||||
signal ram_index_count : natural range 0 to 2**word_index_width-1;
|
||||
signal ram_index_count_rst : std_logic;
|
||||
signal cache_index_count : natural range 0 to 2**cache_index_width-1;
|
||||
signal cache_index_count_en : std_logic;
|
||||
signal mem_index_count : natural range 0 to 2**word_index_width-1;
|
||||
signal mem_index_count_en : std_logic;
|
||||
signal mem_index_count_rst : std_logic;
|
||||
signal cpu_reg_en : std_logic;
|
||||
signal was_miss : std_logic;
|
||||
signal data_write : std_logic;
|
||||
signal cpu_hit_we : std_logic;
|
||||
signal instant_raw : std_logic;
|
||||
|
||||
begin
|
||||
|
||||
cpu_hit_we <= cpu_we2 and cache_hit;
|
||||
|
||||
cpu_index_register:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if RST_I = '1' then
|
||||
cache_index_reg <= (others => '0');
|
||||
tag_index_reg <= (others => '0');
|
||||
elsif cpu_reg_en = '1' and en = '1' and instant_raw = '0' then
|
||||
word_index_reg <= cpu_word_index;
|
||||
cache_index_reg <= cpu_cache_index;
|
||||
tag_index_reg <= cpu_tag;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
cpu_data_register:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if RST_I = '1' then
|
||||
cpu_we_reg <= '0';
|
||||
elsif cpu_reg_en = '1' and en = '1' then
|
||||
cpu_data_reg <= cpu_din;
|
||||
cpu_be_reg <= cpu_be;
|
||||
cpu_we_reg <= cpu_we;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
cpu_was_wr_register:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
cpu_en2 <= '0';
|
||||
cpu_we2 <= '0';
|
||||
if cpu_en = '1' and en = '1' then
|
||||
cpu_we2 <= cpu_we;
|
||||
cpu_en2 <= '1';
|
||||
cpu_dram_din <= cpu_din;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
instant_raw_logic:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
instant_raw <= cpu_hit_we and cpu_en and en and not cpu_we;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
inst_tag_ram : dpram_1w1r
|
||||
GENERIC MAP (
|
||||
addr_width => tram_addr_width,
|
||||
data_width => tram_data_width
|
||||
)
|
||||
PORT MAP (
|
||||
clka => CLK_I,
|
||||
clkb => CLK_I,
|
||||
en_a => '1',
|
||||
en_b => tram_re,
|
||||
we_a => tram_we,
|
||||
addr_a => tram_addr_wr,
|
||||
addr_b => tram_addr_rd,
|
||||
din_a => tram_din,
|
||||
dout_b => tram_dout
|
||||
);
|
||||
|
||||
gen_data_ram:
|
||||
for i in 0 to 3 generate
|
||||
begin
|
||||
|
||||
inst_data_ram : dpram_2w2r
|
||||
GENERIC MAP (
|
||||
addr_width => lg2(cache_size),
|
||||
data_width => word_t'length/4
|
||||
)
|
||||
PORT MAP (
|
||||
clk_a => CLK_I,
|
||||
clk_b => CLK_I,
|
||||
en_a => ctrl_dram_en,
|
||||
en_b => '1',
|
||||
we_a => ctrl_dram_we(i),
|
||||
we_b => cpu_dram_we(i),
|
||||
addr_a => ctrl_dram_addr,
|
||||
addr_b => cpu_dram_addr,
|
||||
din_a => ctrl_dram_din(8*(i+1)-1 downto 8*i),
|
||||
din_b => cpu_dram_din(8*(i+1)-1 downto 8*i),
|
||||
dout_a => open,
|
||||
dout_b => cpu_dram_dout(8*(i+1)-1 downto 8*i)
|
||||
);
|
||||
end generate;
|
||||
|
||||
cache_state_next:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if RST_I = '1' then
|
||||
s <= init;
|
||||
else
|
||||
s <= sn;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
cpu_busy <= cache_busy or instant_raw;
|
||||
cpu_dout <= cpu_dram_dout;
|
||||
|
||||
tag_match <= '1' when tag_index_reg = cache_entry_out.tag else '0';
|
||||
cache_hit <= tag_match and cache_entry_out.valid;
|
||||
tram_din <= to_tram_data(cache_entry_in);
|
||||
tram_addr_rd <= cpu_cache_index when was_miss = '0' else cache_index_reg;
|
||||
cache_entry_out <= to_dcache_entry(tram_dout);
|
||||
cpu_dram_addr <= (cpu_cache_index & cpu_word_index) when (was_miss = '0' and cpu_hit_we = '0' and instant_raw = '0') else (cache_index_reg & word_index_reg);
|
||||
ADDR_O <= tag_index_reg & cache_index_reg & to_unsigned(mem_index_count, word_index_width) & "00";
|
||||
ctrl_dram_addr <= cache_index_reg & to_unsigned(ram_index_count, word_index_width);
|
||||
ctrl_dram_din <= DAT_I;
|
||||
ctrl_dram_we <= (others => '1');
|
||||
ctrl_dram_en <= data_write and ACK_I;
|
||||
cpu_dram_we <= cpu_be_reg when (cpu_hit_we = '1') else (others => '0');
|
||||
|
||||
cache_state:
|
||||
process(s, instant_raw, cache_hit, cache_index_count, ram_index_count, mem_index_count, cache_index_reg, ACK_I, tag_index_reg, cpu_en, SRDY_I, cpu_en2, cpu_we_reg)
|
||||
begin
|
||||
cpu_reg_en <= '0';
|
||||
cache_busy <= '1';
|
||||
tram_we <= '0';
|
||||
cache_index_count_en <= '0';
|
||||
ram_index_count_rst <= '0';
|
||||
mem_index_count_en <= '0';
|
||||
mem_index_count_rst <= '0';
|
||||
CYC_O <= '0';
|
||||
STB_O <= '0';
|
||||
tram_re <= '0';
|
||||
was_miss <= '0';
|
||||
data_write <= '0';
|
||||
tram_addr_wr <= to_unsigned(cache_index_count, cache_index_width);
|
||||
cache_entry_in.tv_p <= (others => '0');
|
||||
cache_entry_in.tag <= tag_index_reg;
|
||||
cache_entry_in.valid <= '0';
|
||||
sn <= s;
|
||||
|
||||
case s is
|
||||
when init =>
|
||||
sn <= flush;
|
||||
when ready =>
|
||||
cache_busy <= '0';
|
||||
cpu_reg_en <= '1';
|
||||
tram_re <= cpu_en;
|
||||
if cpu_en2 = '1' then
|
||||
if cache_hit = '0' and cpu_we_reg = '0' then
|
||||
sn <= mem_request;
|
||||
cpu_reg_en <= '0';
|
||||
cache_busy <= '1';
|
||||
CYC_O <= '1';
|
||||
end if;
|
||||
end if;
|
||||
when flush =>
|
||||
cache_index_count_en <= '1';
|
||||
tram_addr_wr <= to_unsigned(cache_index_count, cache_index_width);
|
||||
tram_we <= '1';
|
||||
cache_entry_in.valid <= '0';
|
||||
cache_entry_in.tag <= (others => '0');
|
||||
if cache_index_count = 0 then
|
||||
sn <= ready;
|
||||
if cpu_en = '1' then
|
||||
cpu_reg_en <= '1';
|
||||
tram_re <= '1';
|
||||
end if;
|
||||
end if;
|
||||
when mem_request =>
|
||||
ram_index_count_rst <= '1';
|
||||
mem_index_count_rst <= '1';
|
||||
CYC_O <= '1';
|
||||
if SRDY_I = '1' then
|
||||
sn <= mem_access;
|
||||
end if;
|
||||
when mem_access =>
|
||||
data_write <= '1';
|
||||
mem_index_count_en <= '1';
|
||||
CYC_O <= '1';
|
||||
STB_O <= '1';
|
||||
if mem_index_count = 2**word_index_width-1 then
|
||||
if SRDY_I = '1' then
|
||||
sn <= mem_data;
|
||||
end if;
|
||||
end if;
|
||||
when mem_data =>
|
||||
CYC_O <= '1';
|
||||
data_write <= '1';
|
||||
if ram_index_count = 2**word_index_width-1 then
|
||||
if ACK_I = '1' then
|
||||
sn <= upd_cache;
|
||||
end if;
|
||||
end if;
|
||||
when upd_cache =>
|
||||
tram_addr_wr <= cache_index_reg;
|
||||
tram_we <= '1';
|
||||
cache_entry_in.valid <= '1';
|
||||
sn <= rd_cache;
|
||||
when rd_cache =>
|
||||
tram_re <= '1';
|
||||
was_miss <= '1';
|
||||
sn <= ready;
|
||||
|
||||
when others =>
|
||||
sn <= ready;
|
||||
end case;
|
||||
end process;
|
||||
|
||||
cache_index_counter:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if cache_index_count_en = '0' then
|
||||
cache_index_count <= 2**cache_index_width-1;
|
||||
elsif cache_index_count /= 0 then
|
||||
cache_index_count <= cache_index_count - 1;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
ram_index_counter:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if ram_index_count_rst = '1' then
|
||||
ram_index_count <= 0;
|
||||
elsif data_write = '1' and ACK_I = '1' then
|
||||
if ram_index_count /= 2**word_index_width-1 then
|
||||
ram_index_count <= ram_index_count + 1;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
mem_index_counter:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if mem_index_count_rst = '1' then
|
||||
mem_index_count <= 0;
|
||||
elsif mem_index_count_en = '1' and SRDY_I = '1' then
|
||||
if mem_index_count /= 2**word_index_width-1 then
|
||||
mem_index_count <= mem_index_count + 1;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end behavior;
|
||||
@@ -0,0 +1,354 @@
|
||||
LIBRARY IEEE;
|
||||
USE IEEE.STD_LOGIC_1164.ALL;
|
||||
USE IEEE.NUMERIC_STD.ALL;
|
||||
use IEEE.MATH_REAL.ALL;
|
||||
|
||||
library work;
|
||||
use work.mips_types.all;
|
||||
|
||||
ENTITY icache IS
|
||||
Generic
|
||||
(
|
||||
cache_size : natural := 2048; -- words
|
||||
line_size : natural := 8 -- words
|
||||
);
|
||||
Port
|
||||
(
|
||||
RST_I : in STD_LOGIC;
|
||||
CLK_I : in STD_LOGIC;
|
||||
ACK_I : in STD_LOGIC;
|
||||
SRDY_I : in STD_LOGIC;
|
||||
ADDR_O : out word_t;
|
||||
DAT_I : in word_t;
|
||||
STB_O : out STD_LOGIC;
|
||||
CYC_O : out STD_LOGIC;
|
||||
en : in STD_LOGIC;
|
||||
cpu_en : in STD_LOGIC;
|
||||
cpu_addr : in word_t;
|
||||
cpu_dout : out word_t;
|
||||
cpu_busy : out STD_LOGIC
|
||||
);
|
||||
END icache;
|
||||
|
||||
ARCHITECTURE behavior OF icache IS
|
||||
|
||||
COMPONENT dpram_1w1r
|
||||
GENERIC
|
||||
(
|
||||
addr_width : integer := 3;
|
||||
data_width : integer := 8
|
||||
);
|
||||
PORT (
|
||||
clka : in STD_LOGIC;
|
||||
clkb : in STD_LOGIC;
|
||||
en_a : in STD_LOGIC;
|
||||
en_b : in STD_LOGIC;
|
||||
we_a : in STD_LOGIC;
|
||||
addr_a : in unsigned (addr_width-1 downto 0);
|
||||
addr_b : in unsigned (addr_width-1 downto 0);
|
||||
din_a : in unsigned (data_width-1 downto 0);
|
||||
dout_b : out unsigned (data_width-1 downto 0)
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
function lg2(x : natural) return natural is
|
||||
begin
|
||||
return natural(ceil(log2(real(x))));
|
||||
end lg2;
|
||||
|
||||
function po2(x : natural) return natural is
|
||||
begin
|
||||
|
||||
return 2**lg2(x);
|
||||
end po2;
|
||||
|
||||
constant word_index_width : natural := lg2(line_size);
|
||||
constant cache_index_width : natural := lg2(cache_size) - word_index_width;
|
||||
constant tag_width : natural := 32 - word_index_width - cache_index_width - 2;
|
||||
constant tag_parity_width : natural := 3;
|
||||
constant tag_ram_data_width : natural := 1 + tag_parity_width + tag_width;
|
||||
constant tag_ram_addr_width : natural := cache_index_width;
|
||||
|
||||
subtype tag_ram_data_t is unsigned (tag_ram_data_width-1 downto 0);
|
||||
|
||||
type icache_entry_t is record
|
||||
valid : std_logic;
|
||||
tv_p : unsigned(tag_parity_width-1 downto 0);
|
||||
tag : unsigned(tag_width-1 downto 0);
|
||||
end record;
|
||||
|
||||
alias cpu_word_index is cpu_addr(word_index_width+1 downto 2);
|
||||
alias cpu_cache_index is cpu_addr(cache_index_width+word_index_width+1 downto word_index_width+2);
|
||||
alias cpu_tag is cpu_addr(tag_width+cache_index_width+word_index_width+1 downto cache_index_width+word_index_width+2);
|
||||
|
||||
function to_icache_entry(x : tag_ram_data_t) return icache_entry_t is
|
||||
variable result : icache_entry_t;
|
||||
begin
|
||||
result.valid := x(0);
|
||||
result.tv_p := x(3 downto 1);
|
||||
result.tag := x(tag_width+3 downto 4);
|
||||
|
||||
return result;
|
||||
end to_icache_entry;
|
||||
|
||||
function to_tag_ram_data(x : icache_entry_t) return tag_ram_data_t is
|
||||
variable result : tag_ram_data_t;
|
||||
begin
|
||||
result(0) := x.valid;
|
||||
result(3 downto 1) := x.tv_p;
|
||||
result(tag_width+3 downto 4) := x.tag;
|
||||
|
||||
return result;
|
||||
end to_tag_ram_data;
|
||||
|
||||
type cache_state_t is (init, ready, flush, mem_request, mem_access, mem_wait, mem_data, upd_cache, rd_cache);
|
||||
signal s, sn : cache_state_t;
|
||||
|
||||
signal cache_busy : std_logic;
|
||||
signal cache_miss : std_logic;
|
||||
signal tag_match : std_logic;
|
||||
signal word_index_reg : unsigned(word_index_width-1 downto 0);
|
||||
signal cache_index_reg : unsigned(cache_index_width-1 downto 0);
|
||||
signal tag_index_reg : unsigned(tag_width-1 downto 0);
|
||||
|
||||
signal cache_entry_in : icache_entry_t;
|
||||
signal cache_entry_out : icache_entry_t;
|
||||
signal data_ram_addr_rd : unsigned(lg2(cache_size)-1 downto 0);
|
||||
signal data_ram_data_rd : word_t;
|
||||
signal data_ram_addr_wr : unsigned(lg2(cache_size)-1 downto 0);
|
||||
signal data_ram_data_wr : word_t;
|
||||
signal data_ram_we : std_logic;
|
||||
signal data_ram_re : std_logic;
|
||||
|
||||
signal tag_ram_addr_rd : unsigned(cache_index_width-1 downto 0);
|
||||
signal tag_ram_data_rd : tag_ram_data_t;
|
||||
signal tag_ram_addr_wr : unsigned(cache_index_width-1 downto 0);
|
||||
signal tag_ram_data_wr : tag_ram_data_t;
|
||||
signal tag_ram_re : std_logic;
|
||||
signal tag_ram_we : std_logic;
|
||||
|
||||
signal ram_index_count : natural range 0 to 2**word_index_width-1;
|
||||
signal ram_index_count_rst : std_logic;
|
||||
signal cache_index_count : natural range 0 to 2**cache_index_width-1;
|
||||
signal cache_index_count_en : std_logic;
|
||||
signal mem_index_count : natural range 0 to 2**word_index_width-1;
|
||||
signal mem_index_count_en : std_logic;
|
||||
signal mem_index_count_rst : std_logic;
|
||||
signal cpu_reg_en : std_logic;
|
||||
signal was_miss : std_logic;
|
||||
signal data_write : std_logic;
|
||||
|
||||
begin
|
||||
|
||||
|
||||
cpu_index_reg:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if RST_I = '1' then
|
||||
cache_index_reg <= (others => '0');
|
||||
tag_index_reg <= (others => '0');
|
||||
elsif cpu_reg_en = '1' then
|
||||
word_index_reg <= cpu_word_index;
|
||||
cache_index_reg <= cpu_cache_index;
|
||||
tag_index_reg <= cpu_tag;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
inst_tag_ram : dpram_1w1r
|
||||
GENERIC MAP (
|
||||
addr_width => tag_ram_addr_width,
|
||||
data_width => tag_ram_data_width
|
||||
)
|
||||
PORT MAP (
|
||||
clka => CLK_I,
|
||||
clkb => CLK_I,
|
||||
en_a => '1',
|
||||
en_b => tag_ram_re,
|
||||
we_a => tag_ram_we,
|
||||
addr_a => tag_ram_addr_wr,
|
||||
addr_b => tag_ram_addr_rd,
|
||||
din_a => tag_ram_data_wr,
|
||||
dout_b => tag_ram_data_rd
|
||||
);
|
||||
|
||||
inst_data_ram : dpram_1w1r
|
||||
GENERIC MAP (
|
||||
addr_width => lg2(cache_size),
|
||||
data_width => word_t'length
|
||||
)
|
||||
PORT MAP (
|
||||
clka => CLK_I,
|
||||
clkb => CLK_I,
|
||||
en_a => '1',
|
||||
en_b => data_ram_re,
|
||||
we_a => data_ram_we,
|
||||
addr_a => data_ram_addr_wr,
|
||||
addr_b => data_ram_addr_rd,
|
||||
din_a => data_ram_data_wr,
|
||||
dout_b => data_ram_data_rd
|
||||
);
|
||||
|
||||
|
||||
cache_state_next:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if RST_I = '1' then
|
||||
s <= init;
|
||||
else
|
||||
s <= sn;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
cpu_busy <= cache_busy;
|
||||
cpu_dout <= data_ram_data_rd;
|
||||
|
||||
tag_match <= '1' when tag_index_reg = cache_entry_out.tag else '0';
|
||||
cache_miss <= not (tag_match and cache_entry_out.valid);
|
||||
tag_ram_data_wr <= to_tag_ram_data(cache_entry_in);
|
||||
tag_ram_addr_rd <= cpu_cache_index when was_miss = '0' else cache_index_reg;
|
||||
cache_entry_out <= to_icache_entry(tag_ram_data_rd);
|
||||
data_ram_addr_rd <= (cpu_cache_index & cpu_word_index) when was_miss = '0' else (cache_index_reg & word_index_reg);
|
||||
ADDR_O <= tag_index_reg & cache_index_reg & to_unsigned(mem_index_count, word_index_width) & "00";
|
||||
data_ram_addr_wr <= cache_index_reg & to_unsigned(ram_index_count, word_index_width);
|
||||
data_ram_data_wr <= DAT_I;
|
||||
data_ram_we <= data_write and ACK_I;
|
||||
|
||||
cache_state:
|
||||
process(s, cache_miss, cache_index_count, ram_index_count, mem_index_count, cache_index_reg, ACK_I, tag_index_reg, cpu_en, SRDY_I, en)
|
||||
begin
|
||||
cpu_reg_en <= '0';
|
||||
cache_busy <= '1';
|
||||
tag_ram_we <= '0';
|
||||
cache_index_count_en <= '0';
|
||||
ram_index_count_rst <= '0';
|
||||
mem_index_count_en <= '0';
|
||||
mem_index_count_rst <= '0';
|
||||
CYC_O <= '0';
|
||||
STB_O <= '0';
|
||||
data_ram_re <= '0';
|
||||
tag_ram_re <= '0';
|
||||
was_miss <= '0';
|
||||
data_write <= '0';
|
||||
tag_ram_addr_wr <= to_unsigned(cache_index_count, cache_index_width);
|
||||
cache_entry_in.tv_p <= (others => '0');
|
||||
cache_entry_in.tag <= tag_index_reg;
|
||||
cache_entry_in.valid <= '0';
|
||||
sn <= s;
|
||||
|
||||
case s is
|
||||
when init =>
|
||||
sn <= flush;
|
||||
when ready =>
|
||||
if en = '1' then
|
||||
cache_busy <= '0';
|
||||
if cache_miss = '1' then
|
||||
sn <= mem_request;
|
||||
cpu_reg_en <= '0';
|
||||
cache_busy <= '1';
|
||||
CYC_O <= '1';
|
||||
elsif cpu_en = '1' then
|
||||
cpu_reg_en <= '1';
|
||||
data_ram_re <= '1';
|
||||
tag_ram_re <= '1';
|
||||
end if;
|
||||
end if;
|
||||
when flush =>
|
||||
cache_index_count_en <= '1';
|
||||
tag_ram_addr_wr <= to_unsigned(cache_index_count, cache_index_width);
|
||||
tag_ram_we <= '1';
|
||||
cache_entry_in.valid <= '0';
|
||||
cache_entry_in.tag <= (others => '0');
|
||||
if cache_index_count = 0 then
|
||||
sn <= ready;
|
||||
if cpu_en = '1' then
|
||||
cpu_reg_en <= '1';
|
||||
data_ram_re <= '1';
|
||||
tag_ram_re <= '1';
|
||||
end if;
|
||||
end if;
|
||||
when mem_request =>
|
||||
ram_index_count_rst <= '1';
|
||||
mem_index_count_rst <= '1';
|
||||
CYC_O <= '1';
|
||||
if SRDY_I = '1' then
|
||||
sn <= mem_access;
|
||||
end if;
|
||||
when mem_access =>
|
||||
mem_index_count_en <= '1';
|
||||
data_write <= '1';
|
||||
CYC_O <= '1';
|
||||
STB_O <= '1';
|
||||
if mem_index_count = 2**word_index_width-1 then
|
||||
if SRDY_I = '1' then
|
||||
sn <= mem_data;
|
||||
end if;
|
||||
end if;
|
||||
when mem_data =>
|
||||
CYC_O <= '1';
|
||||
data_write <= '1';
|
||||
if ram_index_count = 2**word_index_width-1 then
|
||||
if ACK_I = '1' then
|
||||
sn <= upd_cache;
|
||||
end if;
|
||||
end if;
|
||||
when upd_cache =>
|
||||
tag_ram_addr_wr <= cache_index_reg;
|
||||
tag_ram_we <= '1';
|
||||
cache_entry_in.valid <= '1';
|
||||
sn <= rd_cache;
|
||||
|
||||
when rd_cache =>
|
||||
tag_ram_re <= '1';
|
||||
data_ram_re <= '1';
|
||||
was_miss <= '1';
|
||||
sn <= ready;
|
||||
when others =>
|
||||
sn <= ready;
|
||||
end case;
|
||||
end process;
|
||||
|
||||
cache_index_counter:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if cache_index_count_en = '0' then
|
||||
cache_index_count <= 2**cache_index_width-1;
|
||||
elsif cache_index_count /= 0 then
|
||||
cache_index_count <= cache_index_count - 1;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
ram_index_counter:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if ram_index_count_rst = '1' then
|
||||
ram_index_count <= 0;
|
||||
elsif data_write = '1' and ACK_I = '1' then
|
||||
if ram_index_count /= 2**word_index_width-1 then
|
||||
ram_index_count <= ram_index_count + 1;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
mem_index_counter:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if mem_index_count_rst = '1' then
|
||||
mem_index_count <= 0;
|
||||
elsif mem_index_count_en = '1' and SRDY_I = '1' then
|
||||
if mem_index_count /= 2**word_index_width-1 then
|
||||
mem_index_count <= mem_index_count + 1;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end behavior;
|
||||
@@ -0,0 +1,184 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
|
||||
-- This file: The arithmetic logic unit
|
||||
--
|
||||
-- Copyright (C) 2008 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.mips_types.all;
|
||||
|
||||
entity alu is
|
||||
Generic
|
||||
(
|
||||
data_width : integer := 8
|
||||
);
|
||||
Port
|
||||
(
|
||||
op1_in : in unsigned (data_width-1 downto 0);
|
||||
op2_in : in unsigned (data_width-1 downto 0);
|
||||
op2_shifted : in unsigned (data_width-1 downto 0);
|
||||
ctrl : in alu_ctrl_t;
|
||||
result : out unsigned (data_width-1 downto 0);
|
||||
flags : out alu_flags_t
|
||||
);
|
||||
end alu;
|
||||
|
||||
architecture Behavioral of alu is
|
||||
|
||||
signal sum_res : unsigned (data_width-1 downto 0);
|
||||
signal and_res : unsigned (data_width-1 downto 0);
|
||||
signal xor_res : unsigned (data_width-1 downto 0);
|
||||
signal nor_res : unsigned (data_width-1 downto 0);
|
||||
signal or_res : unsigned (data_width-1 downto 0);
|
||||
signal eq, sa, sb, sr, c, z : STD_LOGIC;
|
||||
signal lts, ltu : STD_LOGIC;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
begin
|
||||
|
||||
eq <= '1' when op1_in = op2_in else '0' after 3 ns;
|
||||
sa <= op1_in(op1_in'left);
|
||||
sb <= op2_in(op2_in'left);
|
||||
sr <= sum_res(sum_res'left);
|
||||
z <= '1' when op1_in = (data_width-1 downto 0 => '0') else '0' after 2 ns;
|
||||
|
||||
flags.uvf <= (not ctrl.add) and ((sa and (not sb) and (not sr)) or ((not sa) and sb and sr));
|
||||
flags.ovf <= ctrl.add and ((sa and sb and (not sr)) or ((not sa) and (not sb) and sr));
|
||||
-- lts <= (not eq) and (((not c) and sa and sb) or (((not sr) and sa) or (sa and (not sb)) or (sr and (not sb))));
|
||||
lts <= not eq and ((not c and sa) or (not sb and sa) or (not sb and sr));
|
||||
|
||||
ltu <= (not eq) and (not c);
|
||||
flags.lts <= lts;
|
||||
flags.ltu <= ltu;
|
||||
flags.c <= c;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
proc_op_and:
|
||||
process(op1_in, op2_in)
|
||||
variable x1, x2 : unsigned (data_width-1 downto 0);
|
||||
begin
|
||||
x1 := op1_in;
|
||||
x2 := op2_in;
|
||||
|
||||
and_res <= (x1 and x2) after 1 ns;
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
proc_proc_xor:
|
||||
process(op1_in, op2_in)
|
||||
variable x1, x2 : unsigned (data_width-1 downto 0);
|
||||
begin
|
||||
x1 := op1_in;
|
||||
x2 := op2_in;
|
||||
|
||||
xor_res <= (x1 xor x2) after 2 ns;
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
proc_proc_nor:
|
||||
process(op1_in, op2_in)
|
||||
variable x1, x2 : unsigned (data_width-1 downto 0);
|
||||
begin
|
||||
x1 := op1_in;
|
||||
x2 := op2_in;
|
||||
|
||||
nor_res <= (x1 nor x2) after 1 ns;
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
proc_proc_or:
|
||||
process(op1_in, op2_in)
|
||||
variable x1, x2 : unsigned (data_width-1 downto 0);
|
||||
begin
|
||||
x1 := op1_in;
|
||||
x2 := op2_in;
|
||||
|
||||
or_res <= (x1 or x2) after 1 ns;
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
proc_alu_out:
|
||||
process(ctrl, sum_res, and_res, xor_res, nor_res, or_res, op2_shifted, lts, ltu)
|
||||
begin
|
||||
|
||||
result <= sum_res;
|
||||
|
||||
case ctrl.outsel is
|
||||
|
||||
when alu_adder =>
|
||||
result <= sum_res;
|
||||
|
||||
when alu_and =>
|
||||
result <= and_res;
|
||||
|
||||
when alu_xor =>
|
||||
result <= xor_res;
|
||||
|
||||
when alu_nor =>
|
||||
result <= nor_res;
|
||||
|
||||
when alu_or =>
|
||||
result <= or_res;
|
||||
|
||||
when alu_shift2 =>
|
||||
result <= op2_shifted;
|
||||
|
||||
when alu_ltu =>
|
||||
result <= (data_width-1 downto 1 => '0') & ltu;
|
||||
|
||||
when alu_lts =>
|
||||
result <= (data_width-1 downto 1 => '0') & lts;
|
||||
|
||||
when others => null;
|
||||
|
||||
end case;
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
alu_addsub:
|
||||
process(op1_in, op2_in, ctrl)
|
||||
variable sum : unsigned(data_width+1 downto 0);
|
||||
variable op1, op2 : unsigned(data_width+1 downto 0);
|
||||
begin
|
||||
|
||||
op1 := '0' & op1_in & not ctrl.add;
|
||||
if (ctrl.add = '1') then
|
||||
op2 := '0' & op2_in & '0';
|
||||
else
|
||||
op2 := '0' & not op2_in & '1';
|
||||
end if;
|
||||
sum := op1 + op2;
|
||||
|
||||
-- Form sum + carry
|
||||
sum_res <= unsigned(sum(data_width downto 1)) after 4 ns;
|
||||
c <= sum(sum'left) after 4 ns;
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
end Behavioral;
|
||||
@@ -0,0 +1,52 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
|
||||
-- This file: The arithmetic logic unit
|
||||
--
|
||||
-- Copyright (C) 2008 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.mips_types.all;
|
||||
|
||||
entity bcu is
|
||||
Generic
|
||||
(
|
||||
data_width : integer := 8
|
||||
);
|
||||
Port
|
||||
(
|
||||
op1_in : in unsigned (data_width-1 downto 0);
|
||||
op2_in : in unsigned (data_width-1 downto 0);
|
||||
flags : out bcu_flags_t
|
||||
);
|
||||
end bcu;
|
||||
|
||||
architecture Behavioral of bcu is
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
begin
|
||||
|
||||
flags.eq <= '1' when op1_in = op2_in else '0' after 3 ns;
|
||||
flags.ltz <= op1_in(op1_in'left) after 1 ns;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
end Behavioral;
|
||||
@@ -0,0 +1,496 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
|
||||
-- This file: JIPS top file
|
||||
--
|
||||
-- Copyright (C) 2008 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.mips_types.all;
|
||||
|
||||
entity biu is
|
||||
Generic
|
||||
(
|
||||
icache_size : natural := 2048; -- words
|
||||
dcache_size : natural := 2048 -- words
|
||||
);
|
||||
Port
|
||||
(
|
||||
RST_I : in STD_LOGIC;
|
||||
CLK_I : in STD_LOGIC;
|
||||
ACK_I : in STD_LOGIC;
|
||||
SRDY_I : in STD_LOGIC;
|
||||
ADDR_O : out word_t;
|
||||
DAT_I : in word_t;
|
||||
DAT_O : out word_t;
|
||||
WE_O : out STD_LOGIC;
|
||||
SEL_O : out unsigned(3 downto 0);
|
||||
CYC_O : out STD_LOGIC;
|
||||
STB_O : out STD_LOGIC;
|
||||
MRDY_O : out STD_LOGIC;
|
||||
cpu_imem_err : out STD_LOGIC;
|
||||
cpu_imem_rdy : out STD_LOGIC;
|
||||
cpu_imem_en : in STD_LOGIC;
|
||||
cpu_imem_addr : in word_t;
|
||||
cpu_imem_din : out word_t;
|
||||
cpu_dmem_err : out STD_LOGIC;
|
||||
cpu_dmem_rdy : out STD_LOGIC;
|
||||
cpu_dmem_en : in STD_LOGIC;
|
||||
cpu_dmem_we : in STD_LOGIC;
|
||||
cpu_dmem_be : in unsigned(3 downto 0);
|
||||
cpu_dmem_dout : in word_t;
|
||||
cpu_dmem_din : out word_t;
|
||||
cpu_dmem_addr : in word_t
|
||||
);
|
||||
end biu;
|
||||
|
||||
architecture behavior of biu is
|
||||
|
||||
COMPONENT icache
|
||||
GENERIC
|
||||
(
|
||||
cache_size : natural; -- words
|
||||
line_size : natural -- words
|
||||
);
|
||||
PORT
|
||||
(
|
||||
RST_I : in STD_LOGIC;
|
||||
CLK_I : in STD_LOGIC;
|
||||
ACK_I : in STD_LOGIC;
|
||||
SRDY_I : in STD_LOGIC;
|
||||
ADDR_O : out word_t;
|
||||
DAT_I : in word_t;
|
||||
STB_O : out STD_LOGIC;
|
||||
CYC_O : out STD_LOGIC;
|
||||
en : in STD_LOGIC;
|
||||
cpu_en : in STD_LOGIC;
|
||||
cpu_addr : in word_t;
|
||||
cpu_dout : out word_t;
|
||||
cpu_busy : out STD_LOGIC
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
COMPONENT dcache
|
||||
GENERIC
|
||||
(
|
||||
cache_size : natural; -- words
|
||||
line_size : natural -- words
|
||||
);
|
||||
PORT
|
||||
(
|
||||
RST_I : in STD_LOGIC;
|
||||
CLK_I : in STD_LOGIC;
|
||||
ACK_I : in STD_LOGIC;
|
||||
SRDY_I : in STD_LOGIC;
|
||||
ADDR_O : out word_t;
|
||||
DAT_I : in word_t;
|
||||
STB_O : out STD_LOGIC;
|
||||
CYC_O : out STD_LOGIC;
|
||||
en : in STD_LOGIC;
|
||||
cpu_en : in STD_LOGIC;
|
||||
cpu_we : in STD_LOGIC;
|
||||
cpu_be : in unsigned(3 downto 0);
|
||||
cpu_addr : in word_t;
|
||||
cpu_din : in word_t;
|
||||
cpu_dout : out word_t;
|
||||
cpu_busy : out STD_LOGIC
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
type bus_state_t is (init, ready, icache_bus_access, dcache_bus_access, write_bus, read_bus, read_finish);
|
||||
|
||||
signal s, sn : bus_state_t;
|
||||
signal bus_idle : std_logic;
|
||||
signal busy : std_logic;
|
||||
signal dmem_be : unsigned(3 downto 0);
|
||||
signal dcache_dout : word_t;
|
||||
signal dcache_mem_gnt : std_logic;
|
||||
signal icache_mem_gnt : std_logic;
|
||||
signal dmem_mem_wr_gnt : std_logic;
|
||||
signal dmem_mem_rd_gnt : std_logic;
|
||||
signal dcache_busy : std_logic;
|
||||
signal icache_busy : std_logic;
|
||||
signal CYC_O_icache : std_logic;
|
||||
signal CYC_O_dcache : std_logic;
|
||||
signal CYC_O_dmem_rd : std_logic;
|
||||
signal CYC_O_dmem_wr : std_logic;
|
||||
signal SRDY_I_icache : std_logic;
|
||||
signal SRDY_I_dcache : std_logic;
|
||||
signal ADDR_O_icache : word_t;
|
||||
signal ADDR_O_dcache : word_t;
|
||||
signal ADDR_O_dmem_rd : word_t;
|
||||
signal ADDR_O_dmem_wr : word_t;
|
||||
signal STB_O_icache : std_logic;
|
||||
signal STB_O_dcache : std_logic;
|
||||
signal STB_O_dmem_rd : std_logic;
|
||||
signal STB_O_dmem_wr : std_logic;
|
||||
signal DAT_I_dmem_rd : word_t;
|
||||
signal DAT_O_dmem_wr : word_t;
|
||||
signal SEL_O_dmem_wr : unsigned(3 downto 0);
|
||||
signal dcached : std_logic;
|
||||
signal dcache_en : std_logic;
|
||||
signal uncached_access : std_logic;
|
||||
|
||||
type timeout_cnt_t is range 0 to 1E5-1;
|
||||
signal bus_timeout_cnt : timeout_cnt_t;
|
||||
signal bus_timeout : std_logic;
|
||||
|
||||
signal bout_fifo_din : unsigned(68 downto 0);
|
||||
signal bout_fifo_dout : unsigned(68 downto 0);
|
||||
signal bout_fifo_re : std_logic;
|
||||
signal bout_fifo_we : std_logic;
|
||||
signal bout_fifo_full : std_logic;
|
||||
signal bout_fifo_empty : std_logic;
|
||||
signal bout_rdy : std_logic;
|
||||
|
||||
alias bout_fifo_addr_in is bout_fifo_din(31 downto 0);
|
||||
alias bout_fifo_data_in is bout_fifo_din(63 downto 32);
|
||||
alias bout_fifo_sel_in is bout_fifo_din(67 downto 64);
|
||||
alias bout_fifo_we_in is bout_fifo_din(68);
|
||||
alias bout_fifo_addr_out is bout_fifo_dout(31 downto 0);
|
||||
alias bout_fifo_data_out is bout_fifo_dout(63 downto 32);
|
||||
alias bout_fifo_sel_out is bout_fifo_dout(67 downto 64);
|
||||
alias bout_fifo_we_out is bout_fifo_dout(68);
|
||||
|
||||
signal write_fifo_din : unsigned(67 downto 0);
|
||||
signal write_fifo_dout : unsigned(67 downto 0);
|
||||
signal write_fifo_re : std_logic;
|
||||
signal write_fifo_we : std_logic;
|
||||
signal write_fifo_full : std_logic;
|
||||
signal write_fifo_empty : std_logic;
|
||||
signal write_busy : std_logic;
|
||||
|
||||
alias write_fifo_addr_in is write_fifo_din(31 downto 0);
|
||||
alias write_fifo_data_in is write_fifo_din(63 downto 32);
|
||||
alias write_fifo_sel_in is write_fifo_din(67 downto 64);
|
||||
alias write_fifo_addr_out is write_fifo_dout(31 downto 0);
|
||||
alias write_fifo_data_out is write_fifo_dout(63 downto 32);
|
||||
alias write_fifo_sel_out is write_fifo_dout(67 downto 64);
|
||||
|
||||
signal read_cycle : std_logic;
|
||||
|
||||
begin
|
||||
|
||||
|
||||
MRDY_O <= '1';
|
||||
|
||||
read_cyc_register:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if RST_I = '1' then
|
||||
read_cycle <= '0';
|
||||
else
|
||||
read_cycle <= (dmem_mem_rd_gnt and CYC_O_dmem_rd)
|
||||
or (dcache_mem_gnt and CYC_O_dcache)
|
||||
or (icache_mem_gnt and CYC_O_icache);
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
CYC_O <= not bout_fifo_empty or read_cycle;
|
||||
STB_O <= not bout_fifo_empty;
|
||||
ADDR_O <= bout_fifo_addr_out;
|
||||
DAT_O <= bout_fifo_data_out;
|
||||
SEL_O <= bout_fifo_sel_out;
|
||||
WE_O <= bout_fifo_we_out;
|
||||
|
||||
cpu_imem_rdy <= not icache_busy after 4.5 ns;
|
||||
busy <= CYC_O_dmem_rd or dcache_busy or (write_busy);
|
||||
cpu_dmem_rdy <= not busy after 4.5 ns;
|
||||
|
||||
inst_icache : icache
|
||||
GENERIC MAP
|
||||
(
|
||||
cache_size => icache_size, -- words
|
||||
line_size => 8
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
CLK_I => CLK_I,
|
||||
RST_I => RST_I,
|
||||
STB_O => STB_O_icache,
|
||||
CYC_O => CYC_O_icache,
|
||||
ADDR_O => ADDR_O_icache,
|
||||
DAT_I => DAT_I,
|
||||
ACK_I => ACK_I,
|
||||
SRDY_I => SRDY_I_icache,
|
||||
en => '1',
|
||||
cpu_en => cpu_imem_en,
|
||||
cpu_addr => cpu_imem_addr,
|
||||
cpu_dout => cpu_imem_din,
|
||||
cpu_busy => icache_busy
|
||||
);
|
||||
|
||||
SRDY_I_icache <= bout_rdy and icache_mem_gnt;
|
||||
|
||||
inst_dcache : dcache
|
||||
GENERIC MAP
|
||||
(
|
||||
cache_size => dcache_size, -- words
|
||||
line_size => 8
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
CLK_I => CLK_I,
|
||||
RST_I => RST_I,
|
||||
CYC_O => CYC_O_dcache,
|
||||
STB_O => STB_O_dcache,
|
||||
ADDR_O => ADDR_O_dcache,
|
||||
DAT_I => DAT_I,
|
||||
ACK_I => ACK_I,
|
||||
SRDY_I => SRDY_I_dcache,
|
||||
en => dcached,
|
||||
cpu_en => dcache_en,
|
||||
cpu_we => cpu_dmem_we,
|
||||
cpu_be => cpu_dmem_be,
|
||||
cpu_addr => cpu_dmem_addr,
|
||||
cpu_din => cpu_dmem_dout,
|
||||
cpu_dout => dcache_dout,
|
||||
cpu_busy => dcache_busy
|
||||
);
|
||||
|
||||
SRDY_I_dcache <= bout_rdy and dcache_mem_gnt;
|
||||
|
||||
dcached <= '1' when cpu_dmem_addr(31 downto 28) /= X"A" else '0';
|
||||
cpu_dmem_din <= dcache_dout when uncached_access = '0' else DAT_I_dmem_rd;
|
||||
dcache_en <= cpu_dmem_en and not busy;
|
||||
|
||||
-- Instantiate synchronous FIFO
|
||||
inst_bout_fifo: entity work.fifo_sync_dist
|
||||
GENERIC MAP
|
||||
(
|
||||
addr_width => 4,
|
||||
data_width => 69
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
rst => RST_I,
|
||||
clk => CLK_I,
|
||||
we => bout_fifo_we,
|
||||
re => bout_fifo_re,
|
||||
fifo_full => bout_fifo_full,
|
||||
fifo_empty => bout_fifo_empty,
|
||||
fifo_afull => open,
|
||||
fifo_aempty => open,
|
||||
data_w => bout_fifo_din,
|
||||
data_r => bout_fifo_dout
|
||||
);
|
||||
bout_rdy <= not bout_fifo_full;
|
||||
bout_fifo_re <= not bout_fifo_empty and SRDY_I;
|
||||
|
||||
bout_fifo_we <= STB_O_dmem_wr or STB_O_dmem_rd or STB_O_dcache or STB_O_icache;
|
||||
|
||||
bout_fifo_data_in <= DAT_O_dmem_wr when dmem_mem_wr_gnt = '1' else (others => '-');
|
||||
|
||||
bout_fifo_addr_in <= ADDR_O_dmem_wr when dmem_mem_wr_gnt = '1' else
|
||||
ADDR_O_dmem_rd when dmem_mem_rd_gnt = '1' else
|
||||
ADDR_O_dcache when dcache_mem_gnt = '1' else
|
||||
ADDR_O_icache when icache_mem_gnt = '1' else (others => '-');
|
||||
|
||||
bout_fifo_sel_in <= SEL_O_dmem_wr when dmem_mem_wr_gnt = '1' else (others => '0');
|
||||
bout_fifo_we_in <= '1' when dmem_mem_wr_gnt = '1' else '0';
|
||||
|
||||
-- Instantiate synchronous FIFO
|
||||
inst_write_fifo: entity work.fifo_sync_dist
|
||||
GENERIC MAP
|
||||
(
|
||||
addr_width => 4,
|
||||
data_width => 68
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
rst => RST_I,
|
||||
clk => CLK_I,
|
||||
we => write_fifo_we,
|
||||
re => write_fifo_re,
|
||||
fifo_full => write_busy,
|
||||
fifo_empty => write_fifo_empty,
|
||||
fifo_afull => open,
|
||||
fifo_aempty => open,
|
||||
data_w => write_fifo_din,
|
||||
data_r => write_fifo_dout
|
||||
);
|
||||
|
||||
CYC_O_dmem_wr <= not write_fifo_empty;
|
||||
DAT_O_dmem_wr <= write_fifo_data_out;
|
||||
ADDR_O_dmem_wr <= write_fifo_addr_out;
|
||||
SEL_O_dmem_wr <= write_fifo_sel_out;
|
||||
|
||||
write_fifo_data_in <= cpu_dmem_dout;
|
||||
write_fifo_addr_in <= cpu_dmem_addr;
|
||||
write_fifo_sel_in <= cpu_dmem_be;
|
||||
write_fifo_re <= STB_O_dmem_wr;
|
||||
write_fifo_we <= cpu_dmem_en and not busy and cpu_dmem_we;
|
||||
|
||||
dmem_rd_flags:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
uncached_access <= '0';
|
||||
if RST_I = '1' then
|
||||
CYC_O_dmem_rd <= '0';
|
||||
else
|
||||
if ACK_I = '1' and dmem_mem_rd_gnt = '1' then
|
||||
uncached_access <= '1';
|
||||
CYC_O_dmem_rd <= '0';
|
||||
end if;
|
||||
if cpu_dmem_en = '1' and busy = '0' and cpu_dmem_we = '0' then
|
||||
if dcached = '0' then
|
||||
CYC_O_dmem_rd <= '1';
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
dmem_rd_data:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if RST_I = '1' then
|
||||
DAT_I_dmem_rd <= (others => '0');
|
||||
elsif ACK_I = '1' and CYC_O_dmem_rd = '1' then
|
||||
DAT_I_dmem_rd <= DAT_I;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
dmem_rd_regs:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if cpu_dmem_en = '1' and busy = '0' then
|
||||
ADDR_O_dmem_rd <= cpu_dmem_addr;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
bus_state_next:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if RST_I = '1' then
|
||||
s <= init;
|
||||
else
|
||||
s <= sn;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
bus_state:
|
||||
process(s, CYC_O_icache, CYC_O_dcache, CYC_O_dmem_wr, CYC_O_dmem_rd, bout_rdy, ACK_I)
|
||||
begin
|
||||
|
||||
icache_mem_gnt <= '0';
|
||||
dcache_mem_gnt <= '0';
|
||||
dmem_mem_rd_gnt <= '0';
|
||||
dmem_mem_wr_gnt <= '0';
|
||||
STB_O_dmem_rd <= '0';
|
||||
STB_O_dmem_wr <= '0';
|
||||
bus_idle <= '0';
|
||||
sn <= s;
|
||||
case s is
|
||||
when init =>
|
||||
sn <= ready;
|
||||
when ready =>
|
||||
bus_idle <= '1';
|
||||
if CYC_O_dmem_wr = '1' then
|
||||
sn <= write_bus;
|
||||
elsif CYC_O_dmem_rd = '1' then
|
||||
sn <= read_bus;
|
||||
elsif CYC_O_icache = '1' then
|
||||
sn <= icache_bus_access;
|
||||
elsif CYC_O_dcache = '1' then
|
||||
sn <= dcache_bus_access;
|
||||
end if;
|
||||
when icache_bus_access =>
|
||||
icache_mem_gnt <= '1';
|
||||
if CYC_O_icache = '0' then
|
||||
sn <= ready;
|
||||
end if;
|
||||
when dcache_bus_access =>
|
||||
dcache_mem_gnt <= '1';
|
||||
if CYC_O_dcache = '0' then
|
||||
sn <= ready;
|
||||
end if;
|
||||
when write_bus =>
|
||||
dmem_mem_wr_gnt <= '1';
|
||||
if CYC_O_dmem_wr = '1' then
|
||||
if bout_rdy = '1' then
|
||||
STB_O_dmem_wr <= '1';
|
||||
end if;
|
||||
else
|
||||
sn <= ready;
|
||||
end if;
|
||||
when read_bus =>
|
||||
dmem_mem_rd_gnt <= '1';
|
||||
if bout_rdy = '1' then
|
||||
STB_O_dmem_rd <= '1';
|
||||
sn <= read_finish;
|
||||
end if;
|
||||
when read_finish =>
|
||||
dmem_mem_rd_gnt <= '1';
|
||||
if ACK_I = '1' then
|
||||
sn <= ready;
|
||||
end if;
|
||||
when others =>
|
||||
sn <= ready;
|
||||
end case;
|
||||
|
||||
end process;
|
||||
|
||||
bus_timeout_counter:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if bus_idle = '0' then
|
||||
if bus_timeout_cnt /= 0 then
|
||||
bus_timeout_cnt <= bus_timeout_cnt - 1;
|
||||
else
|
||||
bus_timeout <= '1';
|
||||
end if;
|
||||
else
|
||||
bus_timeout_cnt <= timeout_cnt_t'high;
|
||||
bus_timeout <= '0';
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
bus_err:
|
||||
process(CLK_I)
|
||||
begin
|
||||
if rising_edge(CLK_I) then
|
||||
if RST_I = '1' then
|
||||
cpu_imem_err <= '0';
|
||||
cpu_dmem_err <= '0';
|
||||
elsif bus_timeout = '1' then
|
||||
cpu_imem_err <= icache_mem_gnt;
|
||||
cpu_dmem_err <= dcache_mem_gnt or dmem_mem_wr_gnt or dmem_mem_rd_gnt;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
-------------------------------------------------------------------
|
||||
|
||||
end behavior;
|
||||
@@ -0,0 +1,415 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
|
||||
-- This file: The arithmetic logic unit
|
||||
--
|
||||
-- Copyright (C) 2008 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.mips_types.all;
|
||||
use work.mips_instr.all;
|
||||
|
||||
entity cop is
|
||||
Port
|
||||
(
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
sdu : in sdu_t;
|
||||
IR_valid : in STD_LOGIC;
|
||||
IR : in word_t;
|
||||
events : in event_t;
|
||||
ctrl_in : in cop_ctrl_in_t;
|
||||
ctrl_out : out cop_ctrl_out_t;
|
||||
din : in word_t;
|
||||
dout : out word_t
|
||||
);
|
||||
end cop;
|
||||
|
||||
architecture Behavioral of cop is
|
||||
|
||||
signal epc : word_t;
|
||||
signal cause : word_t;
|
||||
signal status : word_t;
|
||||
signal BadVAddr : word_t;
|
||||
signal exc_code : unsigned(4 downto 0);
|
||||
signal test_reg : word_t;
|
||||
signal test_reg_we : STD_LOGIC;
|
||||
signal stat_reg_we : STD_LOGIC;
|
||||
signal eflags_reg_we : STD_LOGIC;
|
||||
signal epc_reg_we : STD_LOGIC;
|
||||
signal code_reg_we : STD_LOGIC;
|
||||
signal ip_reg_we : STD_LOGIC;
|
||||
signal bd : STD_LOGIC;
|
||||
signal ip : unsigned(7 downto 0);
|
||||
signal im : unsigned(7 downto 0);
|
||||
signal status_save : STD_LOGIC;
|
||||
signal status_rest : STD_LOGIC;
|
||||
signal exception : STD_LOGIC;
|
||||
signal exception_end : STD_LOGIC;
|
||||
signal eflags : exc_flags_t;
|
||||
signal exc_enable : STD_LOGIC;
|
||||
signal cop_EX_en : STD_LOGIC;
|
||||
|
||||
type cop_pipe_t is record
|
||||
din : word_t;
|
||||
rs : reg_ptr_t;
|
||||
rd : reg_ptr_t;
|
||||
func : func_t;
|
||||
we : std_logic;
|
||||
re : std_logic;
|
||||
cs : std_logic;
|
||||
end record;
|
||||
|
||||
signal cop_pipe_ID : cop_pipe_t;
|
||||
signal cop_pipe_EX : cop_pipe_t;
|
||||
|
||||
function eval_int(ip : unsigned) return STD_LOGIC is
|
||||
variable result : STD_LOGIC;
|
||||
begin
|
||||
result := '0';
|
||||
for i in ip'range loop
|
||||
result := result or ip(i);
|
||||
end loop;
|
||||
|
||||
return result;
|
||||
end eval_int;
|
||||
|
||||
type exc_state_t is (exc_init, exc_idle, exc_commit_ID, exc_commit_EX, exc_commit_MEM);
|
||||
signal exc_state, exc_staten : exc_state_t;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
begin
|
||||
|
||||
cop_pipe_ID.din <= din;
|
||||
cop_pipe_ID.cs <= IR_valid;
|
||||
cop_pipe_ID.rs <= extract_rs(IR);
|
||||
cop_pipe_ID.rd <= extract_rd(IR);
|
||||
cop_pipe_ID.func <= extract_func(IR);
|
||||
cop_pipe_ID.re <= cop_pipe_ID.cs when cop_pipe_ID.rs = "00000" else '0';
|
||||
cop_pipe_ID.we <= cop_pipe_ID.cs when cop_pipe_ID.rs = "00100" else '0';
|
||||
cop_EX_en <= exc_enable and not status_save;
|
||||
|
||||
ctrl_out.ee <= exc_enable;
|
||||
ctrl_out.ec <= status_save;
|
||||
ctrl_out.RE <= status(25);
|
||||
ctrl_out.user_mode <= status(1);
|
||||
ctrl_out.int <= eflags.Int;
|
||||
|
||||
ctrl_out.cop_read <= cop_pipe_EX.cs and cop_pipe_EX.re after 1 ns;
|
||||
ctrl_out.reg_write <= cop_pipe_ID.re after 1 ns;
|
||||
|
||||
im <= status(15 downto 8);
|
||||
cause <= bd & (30 downto 16 => '0') & ip & '0' & exc_code & "00";
|
||||
|
||||
eflags.Ov <= events.alu_ovf or events.alu_uvf;
|
||||
eflags.DAdEL <= events.data_load_err;
|
||||
eflags.DAdES <= events.data_store_err;
|
||||
eflags.IAdEL <= events.inst_load_err;
|
||||
eflags.IAdEK <= events.inst_priv_addr and status(1);
|
||||
eflags.Sys <= events.syscall;
|
||||
eflags.Bp <= events.break;
|
||||
eflags.RI <= events.illegal;
|
||||
eflags.Int <= eval_int(ip) and status(0);
|
||||
|
||||
exception <= eflags.Ov or eflags.Sys or eflags.Bp or eflags.RI or eflags.IAdEL or eflags.IAdEK or eflags.DAdEL or eflags.DAdES or eflags.Int after 1 ns;
|
||||
|
||||
exception_state:
|
||||
process(exc_state, ctrl_in, exception, sdu)
|
||||
begin
|
||||
|
||||
exc_enable <= '0';
|
||||
ctrl_out.exc_commit <= '0';
|
||||
ctrl_out.exc_pending <= '0';
|
||||
epc_reg_we <= '0';
|
||||
code_reg_we <= '0';
|
||||
status_save <= '0';
|
||||
eflags_reg_we <= '0';
|
||||
|
||||
exc_staten <= exc_state;
|
||||
|
||||
case exc_state is
|
||||
|
||||
when exc_init =>
|
||||
exc_staten <= exc_idle;
|
||||
|
||||
when exc_idle =>
|
||||
exc_enable <= '1';
|
||||
if exception = '1' then
|
||||
status_save <= '1';
|
||||
eflags_reg_we <= '1';
|
||||
code_reg_we <= '1';
|
||||
exc_staten <= exc_commit_ID;
|
||||
end if;
|
||||
|
||||
when exc_commit_ID =>
|
||||
ctrl_out.exc_pending <= '1';
|
||||
ctrl_out.exc_commit <= '1';
|
||||
if sdu.ID_stall = '0' then
|
||||
exc_staten <= exc_commit_EX;
|
||||
end if;
|
||||
|
||||
when exc_commit_EX =>
|
||||
ctrl_out.exc_pending <= '1';
|
||||
ctrl_out.exc_commit <= '1';
|
||||
if sdu.EX_stall = '0' then
|
||||
exc_staten <= exc_commit_MEM;
|
||||
end if;
|
||||
|
||||
when exc_commit_MEM =>
|
||||
ctrl_out.exc_pending <= '1';
|
||||
if sdu.MEM_stall = '0' then
|
||||
epc_reg_we <= '1';
|
||||
exc_staten <= exc_idle;
|
||||
end if;
|
||||
|
||||
when others =>
|
||||
exc_staten <= exc_idle;
|
||||
|
||||
end case;
|
||||
end process;
|
||||
|
||||
exception_state_next:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if rst = '1' then
|
||||
exc_state <= exc_init;
|
||||
else
|
||||
exc_state <= exc_staten;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
cop_exception_epc_write:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if rst = '1' then
|
||||
bd <= '0';
|
||||
epc <= (others => '0');
|
||||
elsif epc_reg_we = '1' then
|
||||
bd <= '0';
|
||||
epc <= ctrl_in.epc_mem;
|
||||
if ctrl_in.bd_wb = '1' then
|
||||
bd <= '1';
|
||||
epc <= ctrl_in.epc_wb;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
cop_exception_map:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if rst = '1' then
|
||||
exc_code <= (others => '0');
|
||||
BadVAddr <= (others => '0');
|
||||
elsif code_reg_we = '1' then
|
||||
if eflags.Ov = '1' then
|
||||
exc_code <= "01100";
|
||||
elsif eflags.Sys = '1' then
|
||||
exc_code <= "01000";
|
||||
elsif eflags.Bp = '1' then
|
||||
exc_code <= "01001";
|
||||
elsif eflags.RI = '1' then
|
||||
exc_code <= "01010";
|
||||
elsif eflags.IAdEL = '1' then
|
||||
exc_code <= "00100";
|
||||
BadVAddr <= ctrl_in.imem_addr;
|
||||
elsif eflags.IAdEK = '1' then
|
||||
exc_code <= "00100";
|
||||
BadVAddr <= ctrl_in.imem_addr;
|
||||
elsif eflags.DAdEL = '1' then
|
||||
exc_code <= "00100";
|
||||
BadVAddr <= ctrl_in.dmem_addr;
|
||||
elsif eflags.DAdES = '1' then
|
||||
exc_code <= "00101";
|
||||
BadVAddr <= ctrl_in.dmem_addr;
|
||||
elsif eflags.Int = '1' then
|
||||
exc_code <= "00000";
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
status_rest <= exception_end and ctrl_in.exc_left;
|
||||
|
||||
cop_status_restore:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if rst = '1' then
|
||||
exception_end <= '0';
|
||||
ctrl_out.exc_exit <= '0';
|
||||
else
|
||||
if cop_pipe_ID.func = "10000" and exception_end = '0' then -- RFE
|
||||
exception_end <= cop_pipe_ID.cs;
|
||||
ctrl_out.exc_exit <= cop_pipe_ID.cs;
|
||||
elsif exception_end = '1' and ctrl_in.exc_left = '1' then
|
||||
exception_end <= '0';
|
||||
ctrl_out.exc_exit <= '0';
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
cop_ip_reg_write:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if rst = '1' then
|
||||
ip(1 downto 0) <= (others => '0');
|
||||
elsif ip_reg_we = '1' then
|
||||
ip(1 downto 0) <= cop_pipe_EX.din(9 downto 8) and im(1 downto 0);
|
||||
end if;
|
||||
ip(7 downto 2) <= events.Int and im(7 downto 2);
|
||||
end if;
|
||||
end process;
|
||||
|
||||
cop_exc_vector:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
ctrl_out.exc_vec <= X"80000180";
|
||||
if status(22) = '1' then
|
||||
ctrl_out.exc_vec <= X"BFC00180";
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
cop_pipe:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if rst = '1' then
|
||||
cop_pipe_EX.cs <= '0';
|
||||
cop_pipe_EX.we <= '0';
|
||||
cop_pipe_EX.re <= '0';
|
||||
else
|
||||
if sdu.EX_stall = '0' then
|
||||
cop_pipe_EX <= cop_pipe_ID;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
cop_register_read:
|
||||
process(clk)
|
||||
variable reg : word_t;
|
||||
begin
|
||||
if rising_edge(clk) and cop_pipe_ID.re = '1' and sdu.ID_stall = '0' then
|
||||
case cop_pipe_ID.rd is
|
||||
when "01000" => -- BadVAddr
|
||||
reg := BadVAddr;
|
||||
|
||||
when "01100" => -- Status
|
||||
reg := status;
|
||||
|
||||
when "01101" => -- Cause
|
||||
reg := cause;
|
||||
|
||||
when "01110" => -- EPC (Exception Program Counter)
|
||||
reg := epc;
|
||||
|
||||
when "01111" => -- PRId (Processor Revision Register)
|
||||
reg := X"000002" & to_unsigned(REVISION ,8);
|
||||
|
||||
when "11111" => -- test_reg
|
||||
reg := test_reg;
|
||||
|
||||
when others =>
|
||||
reg := (others => '-');
|
||||
|
||||
end case;
|
||||
dout <= reg after 1 ns;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
cop_we_gen:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if rst = '1' then
|
||||
test_reg_we <= '0';
|
||||
stat_reg_we <= '0';
|
||||
ip_reg_we <= '0';
|
||||
else
|
||||
test_reg_we <= '0';
|
||||
stat_reg_we <= '0';
|
||||
ip_reg_we <= '0';
|
||||
if (cop_EX_en and cop_pipe_EX.we) = '1' then
|
||||
|
||||
case cop_pipe_EX.rd is
|
||||
|
||||
when "01100" =>
|
||||
stat_reg_we <= not status(1) or status(28);
|
||||
when "01101" =>
|
||||
ip_reg_we <= not status(1) or status(28);
|
||||
when "11111" =>
|
||||
test_reg_we <= not status(1) or status(28);
|
||||
when others => null;
|
||||
|
||||
end case;
|
||||
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
cop_test_reg_write:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if rst = '1' then
|
||||
test_reg <= (others => '0');
|
||||
else --if ce = '1' then
|
||||
if test_reg_we = '1' then
|
||||
test_reg <= cop_pipe_EX.din;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
cop_status_reg_write:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if rst = '1' then
|
||||
status <= X"00400000";
|
||||
else
|
||||
if status_save = '1' then
|
||||
status(5 downto 4) <= status(3 downto 2);
|
||||
status(3 downto 2) <= status(1 downto 0);
|
||||
status(1 downto 0) <= "00";
|
||||
elsif status_rest = '1' then
|
||||
status(1 downto 0) <= status(3 downto 2);
|
||||
status(3 downto 2) <= status(5 downto 4);
|
||||
elsif stat_reg_we = '1' then
|
||||
status <= cop_pipe_EX.din;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
end Behavioral;
|
||||
@@ -0,0 +1,101 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
|
||||
-- This file: The datapath controller
|
||||
--
|
||||
-- Copyright (C) 2008 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.mips_types.all;
|
||||
use work.mips_instr.all;
|
||||
|
||||
entity idecode_rom is
|
||||
Port
|
||||
(
|
||||
nop : in std_logic;
|
||||
inst_in : in word_t;
|
||||
ctrl_out : out ctrl_lines_t
|
||||
);
|
||||
end idecode_rom;
|
||||
|
||||
architecture Behavioral of idecode_rom is
|
||||
|
||||
signal ctrl_special : ctrl_lines_t;
|
||||
signal ctrl_regimm : ctrl_lines_t;
|
||||
signal ctrl_opcode : ctrl_lines_t;
|
||||
|
||||
signal rom_special : rom_special_t := gen_rom_special;
|
||||
signal rom_regimm : rom_regimm_t := gen_rom_regimm;
|
||||
signal rom_opcode : rom_opcode_t := gen_rom_opcode;
|
||||
|
||||
attribute rom_style : string;
|
||||
|
||||
attribute rom_style of rom_special: signal is "distributed";
|
||||
attribute rom_style of rom_regimm: signal is "distributed";
|
||||
attribute rom_style of rom_opcode: signal is "distributed";
|
||||
|
||||
begin
|
||||
|
||||
i_dec_special:
|
||||
process(inst_in, rom_special)
|
||||
variable func : func_t;
|
||||
begin
|
||||
func := extract_func(inst_in);
|
||||
ctrl_special <= rom_special(to_integer(func));
|
||||
end process;
|
||||
|
||||
i_dec_regimm:
|
||||
process(inst_in, rom_regimm)
|
||||
variable rt : reg_ptr_t;
|
||||
begin
|
||||
rt := extract_rt(inst_in);
|
||||
ctrl_regimm <= rom_regimm(to_integer(rt));
|
||||
end process;
|
||||
|
||||
i_dec_opcode:
|
||||
process(inst_in, rom_opcode)
|
||||
variable opc : opcode_t;
|
||||
begin
|
||||
opc := extract_opc(inst_in);
|
||||
ctrl_opcode <= rom_opcode(to_integer(opc));
|
||||
end process;
|
||||
|
||||
proc_decode:
|
||||
process(inst_in, ctrl_special, ctrl_regimm, ctrl_opcode, nop)
|
||||
variable opclass : opcode_t;
|
||||
begin
|
||||
opclass := extract_opc(inst_in);
|
||||
ctrl_out <= ctrl_lines_default after 2 ns;
|
||||
if nop = '0' then
|
||||
case opclass is
|
||||
when "000000" =>
|
||||
ctrl_out <= ctrl_special after 2 ns;
|
||||
when "000001" =>
|
||||
ctrl_out <= ctrl_regimm after 2 ns;
|
||||
when others =>
|
||||
ctrl_out <= ctrl_opcode after 2 ns;
|
||||
end case;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end Behavioral;
|
||||
@@ -0,0 +1,997 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
|
||||
-- This file: Types, constants and functions for JCPU
|
||||
--
|
||||
-- Copyright (C) 2008 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.mips_types.all;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
package mips_instr is
|
||||
|
||||
function extract_opc(instr : word_t) return opcode_t;
|
||||
function extract_rs(instr : word_t) return reg_ptr_t;
|
||||
function extract_rt(instr : word_t) return reg_ptr_t;
|
||||
function extract_rd(instr : word_t) return reg_ptr_t;
|
||||
function extract_shamt(instr : word_t) return shamt_t;
|
||||
function extract_func(instr : word_t) return func_t;
|
||||
function extract_simm32(instr : word_t) return word_t;
|
||||
function extract_uimm16(instr : word_t) return word_t;
|
||||
function extract_jimm32(instr, pc : word_t) return word_t;
|
||||
function extract_bimm18(instr, pc : word_t) return word_t;
|
||||
function decode_op(instr : word_t) return op_t;
|
||||
function ctrl_lines_default return ctrl_lines_t;
|
||||
function special_ctrl_lines(func : func_t) return ctrl_lines_t;
|
||||
function regimm_ctrl_lines(rt : reg_ptr_t) return ctrl_lines_t;
|
||||
function opcode_ctrl_lines(opc : opcode_t) return ctrl_lines_t;
|
||||
function gen_rom_opcode return rom_opcode_t;
|
||||
function gen_rom_regimm return rom_regimm_t;
|
||||
function gen_rom_special return rom_special_t;
|
||||
|
||||
end mips_instr;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
library work;
|
||||
use work.mips_types.all;
|
||||
|
||||
package body mips_instr is
|
||||
|
||||
function extract_opc(instr : word_t) return opcode_t is
|
||||
variable result : opcode_t;
|
||||
begin
|
||||
result := instr(31 downto 26);
|
||||
|
||||
return result;
|
||||
|
||||
end extract_opc;
|
||||
|
||||
function extract_rs(instr : word_t) return reg_ptr_t is
|
||||
variable result : reg_ptr_t;
|
||||
begin
|
||||
result := instr(25 downto 21);
|
||||
|
||||
return result;
|
||||
|
||||
end extract_rs;
|
||||
|
||||
function extract_rt(instr : word_t) return reg_ptr_t is
|
||||
variable result : reg_ptr_t;
|
||||
begin
|
||||
result := instr(20 downto 16);
|
||||
|
||||
return result;
|
||||
|
||||
end extract_rt;
|
||||
|
||||
function extract_rd(instr : word_t) return reg_ptr_t is
|
||||
variable result : reg_ptr_t;
|
||||
begin
|
||||
result := instr(15 downto 11);
|
||||
|
||||
return result;
|
||||
|
||||
end extract_rd;
|
||||
|
||||
function extract_shamt(instr : word_t) return shamt_t is
|
||||
variable result : shamt_t;
|
||||
begin
|
||||
result := instr(10 downto 6);
|
||||
|
||||
return result;
|
||||
|
||||
end extract_shamt;
|
||||
|
||||
function extract_func(instr : word_t) return func_t is
|
||||
variable result : func_t;
|
||||
begin
|
||||
result := instr(5 downto 0);
|
||||
|
||||
return result;
|
||||
|
||||
end extract_func;
|
||||
|
||||
function extract_simm32(instr : word_t) return word_t is
|
||||
variable result : word_t;
|
||||
begin
|
||||
result := (31 downto 16 => instr(15)) & instr(15 downto 0);
|
||||
|
||||
return result;
|
||||
|
||||
end extract_simm32;
|
||||
|
||||
function extract_uimm16(instr : word_t) return word_t is
|
||||
variable result : word_t;
|
||||
begin
|
||||
result := (31 downto 16 => '0') & instr(15 downto 0);
|
||||
|
||||
return result;
|
||||
|
||||
end extract_uimm16;
|
||||
|
||||
function extract_jimm32(instr, pc : word_t) return word_t is
|
||||
variable result : word_t;
|
||||
begin
|
||||
result := pc(31 downto 28) & instr(25 downto 0) & "00";
|
||||
|
||||
return result;
|
||||
|
||||
end extract_jimm32;
|
||||
|
||||
function extract_bimm18(instr, pc : word_t) return word_t is
|
||||
variable result : word_t;
|
||||
begin
|
||||
result := (31 downto 18 => instr(15)) & instr(15 downto 0) & "00";
|
||||
|
||||
return result;
|
||||
|
||||
end extract_bimm18;
|
||||
|
||||
function decode_op(instr : word_t) return op_t is
|
||||
variable result : op_t;
|
||||
variable opc : natural range 0 to 63;
|
||||
variable func : natural range 0 to 63;
|
||||
variable rt : natural range 0 to 31;
|
||||
|
||||
begin
|
||||
|
||||
opc := to_integer(extract_opc(instr));
|
||||
func := to_integer(extract_func(instr));
|
||||
rt := to_integer(extract_rt(instr));
|
||||
|
||||
result := op_sll;
|
||||
|
||||
case opc is
|
||||
|
||||
when 0 =>
|
||||
case func is
|
||||
|
||||
when 0 =>
|
||||
result := op_sll;
|
||||
|
||||
when 2 =>
|
||||
result := op_srl;
|
||||
|
||||
when 3 =>
|
||||
result := op_sra;
|
||||
|
||||
when 4 =>
|
||||
result := op_sllv;
|
||||
|
||||
when 6 =>
|
||||
result := op_srlv;
|
||||
|
||||
when 7 =>
|
||||
result := op_srav;
|
||||
|
||||
when 8 =>
|
||||
result := op_jr;
|
||||
|
||||
when 9 =>
|
||||
result := op_jalr;
|
||||
|
||||
when 12 =>
|
||||
result := op_syscall;
|
||||
|
||||
when 13 =>
|
||||
result := op_break;
|
||||
|
||||
when 16 =>
|
||||
result := op_mfhi;
|
||||
|
||||
when 17 =>
|
||||
result := op_mthi;
|
||||
|
||||
when 18 =>
|
||||
result := op_mflo;
|
||||
|
||||
when 19 =>
|
||||
result := op_mtlo;
|
||||
|
||||
when 24 =>
|
||||
result := op_mult;
|
||||
|
||||
when 25 =>
|
||||
result := op_multu;
|
||||
|
||||
when 26 =>
|
||||
result := op_div;
|
||||
|
||||
when 27 =>
|
||||
result := op_divu;
|
||||
|
||||
when 32 =>
|
||||
result := op_add;
|
||||
|
||||
when 33 =>
|
||||
result := op_addu;
|
||||
|
||||
when 34 =>
|
||||
result := op_sub;
|
||||
|
||||
when 35 =>
|
||||
result := op_subu;
|
||||
|
||||
when 36 =>
|
||||
result := op_and;
|
||||
|
||||
when 37 =>
|
||||
result := op_or;
|
||||
|
||||
when 38 =>
|
||||
result := op_xor;
|
||||
|
||||
when 39 =>
|
||||
result := op_nor;
|
||||
|
||||
when 42 =>
|
||||
result := op_slt;
|
||||
|
||||
when 43 =>
|
||||
result := op_sltu;
|
||||
|
||||
when others => null; -- undef
|
||||
|
||||
end case;
|
||||
|
||||
when 1 =>
|
||||
case rt is
|
||||
|
||||
when 0 =>
|
||||
result := op_bltz;
|
||||
|
||||
when 1 =>
|
||||
result := op_bgez;
|
||||
|
||||
when 16 =>
|
||||
result := op_bltzal;
|
||||
|
||||
when 17 =>
|
||||
result := op_bgezal;
|
||||
|
||||
when others => null; -- undef
|
||||
|
||||
end case;
|
||||
|
||||
when 2 =>
|
||||
result := op_j;
|
||||
|
||||
when 3 =>
|
||||
result := op_jal;
|
||||
|
||||
when 4 =>
|
||||
result := op_beq;
|
||||
|
||||
when 5 =>
|
||||
result := op_bne;
|
||||
|
||||
when 6 =>
|
||||
result := op_blez;
|
||||
|
||||
when 7 =>
|
||||
result := op_bgtz;
|
||||
|
||||
when 8 =>
|
||||
result := op_addi;
|
||||
|
||||
when 9 =>
|
||||
result := op_addiu;
|
||||
|
||||
when 10 =>
|
||||
result := op_slti;
|
||||
|
||||
when 11 =>
|
||||
result := op_sltiu;
|
||||
|
||||
when 12 =>
|
||||
result := op_andi;
|
||||
|
||||
when 13 =>
|
||||
result := op_ori;
|
||||
|
||||
when 14 =>
|
||||
result := op_xori;
|
||||
|
||||
when 15 =>
|
||||
result := op_lui;
|
||||
|
||||
when 16 =>
|
||||
result := op_cop0;
|
||||
|
||||
when 17 =>
|
||||
result := op_cop1;
|
||||
|
||||
when 18 =>
|
||||
result := op_cop2;
|
||||
|
||||
when 19 =>
|
||||
result := op_cop3;
|
||||
|
||||
when 32 =>
|
||||
result := op_lb;
|
||||
|
||||
when 33 =>
|
||||
result := op_lh;
|
||||
|
||||
when 34 =>
|
||||
result := op_lwl;
|
||||
|
||||
when 35 =>
|
||||
result := op_lw;
|
||||
|
||||
when 36 =>
|
||||
result := op_lbu;
|
||||
|
||||
when 37 =>
|
||||
result := op_lhu;
|
||||
|
||||
when 38 =>
|
||||
result := op_lwr;
|
||||
|
||||
when 40 =>
|
||||
result := op_sb;
|
||||
|
||||
when 41 =>
|
||||
result := op_sh;
|
||||
|
||||
when 42 =>
|
||||
result := op_swl;
|
||||
|
||||
when 43 =>
|
||||
result := op_sw;
|
||||
|
||||
when 46 =>
|
||||
result := op_swr;
|
||||
|
||||
when 49 =>
|
||||
result := op_lwc1;
|
||||
|
||||
when 50 =>
|
||||
result := op_lwc2;
|
||||
|
||||
when 51 =>
|
||||
result := op_lwc3;
|
||||
|
||||
when 57 =>
|
||||
result := op_swc1;
|
||||
|
||||
when 58 =>
|
||||
result := op_swc2;
|
||||
|
||||
when 59 =>
|
||||
result := op_swc3;
|
||||
|
||||
when others => null; -- undef
|
||||
|
||||
end case;
|
||||
|
||||
return result;
|
||||
|
||||
end decode_op;
|
||||
|
||||
function ctrl_lines_default return ctrl_lines_t is
|
||||
variable result : ctrl_lines_t;
|
||||
begin
|
||||
result.cop_instr_en := '0';
|
||||
result.jump := '0';
|
||||
result.jump_long := '0';
|
||||
result.branch := '0';
|
||||
result.bc_src := bc_eq_ne;
|
||||
result.bc_not := '0';
|
||||
result.alu.outsel := alu_adder;
|
||||
result.alu.add := '1';
|
||||
result.alu.shift_right := '0';
|
||||
result.alu.shift_arith := '0';
|
||||
result.shamt2_srcsel := sa_src_imm;
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.imm_src := src_imm16;
|
||||
result.reg_write := '0';
|
||||
result.dmem_we := '0';
|
||||
result.dmem_en := '0';
|
||||
result.wptr_srcsel := wptr_src_imm;
|
||||
result.reg_link := '0';
|
||||
result.shift_offset := "00";
|
||||
result.shift_byp := '1';
|
||||
result.byte_en_byp := '1';
|
||||
result.sign_ext_byp := '1';
|
||||
result.word4_en := '0';
|
||||
result.word2_en := '0';
|
||||
result.align_left := '0';
|
||||
result.load_signed := '0';
|
||||
result.mul_access := '0';
|
||||
result.mul_hilo_we := '0';
|
||||
result.mul_start := '0';
|
||||
result.mul_s_un := '0';
|
||||
result.mul_mul_divn := '0';
|
||||
result.mul_hilo_sel := '1';
|
||||
result.exc_break := '0';
|
||||
result.exc_syscall := '0';
|
||||
result.exc_illegal := '0';
|
||||
result.except_en := '0';
|
||||
result.alu_exc_en := '0';
|
||||
|
||||
return result;
|
||||
|
||||
end ctrl_lines_default;
|
||||
|
||||
|
||||
function special_ctrl_lines(func : func_t) return ctrl_lines_t is
|
||||
variable result : ctrl_lines_t;
|
||||
variable op : integer range 0 to 2**func_t'length-1;
|
||||
begin
|
||||
|
||||
result := ctrl_lines_default;
|
||||
|
||||
op := to_integer(func);
|
||||
case op is
|
||||
|
||||
-- when op_add =>
|
||||
when 32 =>
|
||||
result.alu.outsel := alu_adder;
|
||||
result.alu.add := '1';
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.reg_write := '1';
|
||||
result.alu_exc_en := '1';
|
||||
|
||||
-- when op_addu =>
|
||||
when 33 =>
|
||||
result.alu.outsel := alu_adder;
|
||||
result.alu.add := '1';
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_and =>
|
||||
when 36 =>
|
||||
result.alu.outsel := alu_and;
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_break =>
|
||||
when 13 =>
|
||||
result.exc_break := '1';
|
||||
result.except_en := '1';
|
||||
|
||||
-- when op_div =>
|
||||
when 26 =>
|
||||
result.mul_access := '1';
|
||||
result.mul_start := '1';
|
||||
result.mul_s_un := '1';
|
||||
result.mul_mul_divn := '0';
|
||||
|
||||
-- when op_divu =>
|
||||
when 27 =>
|
||||
result.mul_access := '1';
|
||||
result.mul_start := '1';
|
||||
result.mul_s_un := '0';
|
||||
result.mul_mul_divn := '0';
|
||||
|
||||
-- when op_jalr =>
|
||||
when 9 =>
|
||||
result.jump_long := '1';
|
||||
result.wptr_srcsel := wptr_src_imm;
|
||||
result.reg_write := '1';
|
||||
result.reg_link := '1';
|
||||
|
||||
-- when op_jr =>
|
||||
when 8 =>
|
||||
result.jump_long := '1';
|
||||
|
||||
-- when op_mfhi =>
|
||||
when 16 =>
|
||||
result.reg_write := '1';
|
||||
result.mul_access := '1';
|
||||
result.mul_hilo_sel := '1';
|
||||
|
||||
-- when op_mflo =>
|
||||
when 18 =>
|
||||
result.reg_write := '1';
|
||||
result.mul_access := '1';
|
||||
result.mul_hilo_sel := '0';
|
||||
|
||||
-- when op_mthi =>
|
||||
when 17 =>
|
||||
result.mul_hilo_we := '1';
|
||||
result.mul_hilo_sel := '1';
|
||||
|
||||
-- when op_mtlo =>
|
||||
when 19 =>
|
||||
result.mul_hilo_we := '1';
|
||||
result.mul_hilo_sel := '0';
|
||||
|
||||
-- when op_mult =>
|
||||
when 24 =>
|
||||
result.mul_access := '1';
|
||||
result.mul_start := '1';
|
||||
result.mul_s_un := '1';
|
||||
result.mul_mul_divn := '1';
|
||||
|
||||
-- when op_multu =>
|
||||
when 25 =>
|
||||
result.mul_access := '1';
|
||||
result.mul_start := '1';
|
||||
result.mul_s_un := '0';
|
||||
result.mul_mul_divn := '1';
|
||||
|
||||
-- when op_or =>
|
||||
when 37 =>
|
||||
result.alu.outsel := alu_or;
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_nor =>
|
||||
when 39 =>
|
||||
result.alu.outsel := alu_nor;
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_sll =>
|
||||
when 0 =>
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.alu.outsel := alu_shift2;
|
||||
result.alu.shift_right := '0';
|
||||
result.shamt2_srcsel := sa_src_imm;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_sllv =>
|
||||
when 4 =>
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.alu.outsel := alu_shift2;
|
||||
result.alu.shift_right := '0';
|
||||
result.shamt2_srcsel := sa_src_reg;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_slt =>
|
||||
when 42 =>
|
||||
result.alu.outsel := alu_lts;
|
||||
result.alu.add := '0';
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_sltu =>
|
||||
when 43 =>
|
||||
result.alu.outsel := alu_ltu;
|
||||
result.alu.add := '0';
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_sra =>
|
||||
when 3 =>
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.alu.outsel := alu_shift2;
|
||||
result.alu.shift_right := '1';
|
||||
result.alu.shift_arith := '1';
|
||||
result.shamt2_srcsel := sa_src_imm;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_srav =>
|
||||
when 7 =>
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.alu.outsel := alu_shift2;
|
||||
result.alu.shift_right := '1';
|
||||
result.alu.shift_arith := '1';
|
||||
result.shamt2_srcsel := sa_src_reg;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_srl =>
|
||||
when 2 =>
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.alu.outsel := alu_shift2;
|
||||
result.alu.shift_right := '1';
|
||||
result.alu.shift_arith := '0';
|
||||
result.shamt2_srcsel := sa_src_imm;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_srlv =>
|
||||
when 6 =>
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.alu.outsel := alu_shift2;
|
||||
result.alu.shift_right := '1';
|
||||
result.alu.shift_arith := '0';
|
||||
result.shamt2_srcsel := sa_src_reg;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_sub =>
|
||||
when 34 =>
|
||||
result.alu.outsel := alu_adder;
|
||||
result.alu.add := '0';
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.reg_write := '1';
|
||||
result.alu_exc_en := '1';
|
||||
|
||||
-- when op_subu =>
|
||||
when 35 =>
|
||||
result.alu.outsel := alu_adder;
|
||||
result.alu.add := '0';
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_syscall =>
|
||||
when 12 =>
|
||||
result.exc_syscall := '1';
|
||||
result.except_en := '1';
|
||||
|
||||
-- when op_xor =>
|
||||
when 38 =>
|
||||
result.alu.outsel := alu_xor;
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_reg;
|
||||
result.reg_write := '1';
|
||||
|
||||
when others =>
|
||||
result.exc_illegal := '1';
|
||||
|
||||
end case;
|
||||
|
||||
return result;
|
||||
|
||||
end special_ctrl_lines;
|
||||
|
||||
function gen_rom_special return rom_special_t is
|
||||
variable result : rom_special_t;
|
||||
variable func : func_t;
|
||||
begin
|
||||
|
||||
for i in 0 to 2**func_t'length-1 loop
|
||||
func := to_unsigned(i, func_t'length);
|
||||
result(i) := special_ctrl_lines(func);
|
||||
end loop;
|
||||
|
||||
return result;
|
||||
end gen_rom_special;
|
||||
|
||||
function regimm_ctrl_lines(rt : reg_ptr_t) return ctrl_lines_t is
|
||||
variable result : ctrl_lines_t;
|
||||
variable op : integer range 0 to 2**reg_ptr_t'length-1;
|
||||
begin
|
||||
|
||||
result := ctrl_lines_default;
|
||||
|
||||
op := to_integer(rt);
|
||||
case op is
|
||||
|
||||
-- when op_bgez =>
|
||||
when 1 =>
|
||||
result.branch := '1';
|
||||
result.bc_src := bc_ltz_gez;
|
||||
result.bc_not := '1';
|
||||
|
||||
-- when op_bgezal =>
|
||||
when 17 =>
|
||||
result.branch := '1';
|
||||
result.bc_src := bc_ltz_gez;
|
||||
result.bc_not := '1';
|
||||
result.wptr_srcsel := wptr_src_const;
|
||||
result.reg_write := '1';
|
||||
result.reg_link := '1';
|
||||
|
||||
-- when op_bltz =>
|
||||
when 0 =>
|
||||
result.branch := '1';
|
||||
result.bc_src := bc_ltz_gez;
|
||||
result.bc_not := '0';
|
||||
|
||||
-- when op_bltzal =>
|
||||
when 16 =>
|
||||
result.branch := '1';
|
||||
result.bc_src := bc_ltz_gez;
|
||||
result.bc_not := '0';
|
||||
result.wptr_srcsel := wptr_src_const;
|
||||
result.reg_write := '1';
|
||||
result.reg_link := '1';
|
||||
|
||||
when others =>
|
||||
result.exc_illegal := '1';
|
||||
|
||||
end case;
|
||||
|
||||
return result;
|
||||
|
||||
end regimm_ctrl_lines;
|
||||
|
||||
function gen_rom_regimm return rom_regimm_t is
|
||||
variable result : rom_regimm_t;
|
||||
variable rt : reg_ptr_t;
|
||||
begin
|
||||
|
||||
for i in 0 to 2**reg_ptr_t'length-1 loop
|
||||
rt := to_unsigned(i, reg_ptr_t'length);
|
||||
result(i) := regimm_ctrl_lines(rt);
|
||||
end loop;
|
||||
|
||||
return result;
|
||||
end gen_rom_regimm;
|
||||
|
||||
function opcode_ctrl_lines(opc : opcode_t) return ctrl_lines_t is
|
||||
variable result : ctrl_lines_t;
|
||||
variable op : integer range 0 to 2**opcode_t'length-1;
|
||||
begin
|
||||
|
||||
result := ctrl_lines_default;
|
||||
|
||||
op := to_integer(opc);
|
||||
case op is
|
||||
|
||||
-- when op_addi =>
|
||||
when 8 =>
|
||||
result.imm_src := src_imm32;
|
||||
result.alu.outsel := alu_adder;
|
||||
result.alu.add := '1';
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_imm;
|
||||
result.reg_write := '1';
|
||||
result.alu_exc_en := '1';
|
||||
|
||||
-- when op_addiu =>
|
||||
when 9 =>
|
||||
result.imm_src := src_imm32;
|
||||
result.alu.outsel := alu_adder;
|
||||
result.alu.add := '1';
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_imm;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_andi =>
|
||||
when 12 =>
|
||||
result.imm_src := src_imm16;
|
||||
result.alu.outsel := alu_and;
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_imm;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_beq =>
|
||||
when 4 =>
|
||||
result.branch := '1';
|
||||
result.bc_src := bc_eq_ne;
|
||||
result.bc_not := '0';
|
||||
|
||||
-- when op_bgtz =>
|
||||
when 7 =>
|
||||
result.branch := '1';
|
||||
result.bc_src := bc_lez_gtz;
|
||||
result.bc_not := '1';
|
||||
|
||||
-- when op_blez =>
|
||||
when 6 =>
|
||||
result.branch := '1';
|
||||
result.bc_src := bc_lez_gtz;
|
||||
result.bc_not := '0';
|
||||
|
||||
-- when op_bne =>
|
||||
when 5 =>
|
||||
result.branch := '1';
|
||||
result.bc_src := bc_eq_ne;
|
||||
result.bc_not := '1';
|
||||
|
||||
-- when op_cop =>
|
||||
when 16 | 17 | 18 | 19 =>
|
||||
result.cop_instr_en := '1';
|
||||
|
||||
-- when op_j =>
|
||||
when 2 =>
|
||||
result.jump := '1';
|
||||
|
||||
-- when op_jal =>
|
||||
when 3 =>
|
||||
result.jump := '1';
|
||||
result.wptr_srcsel := wptr_src_const;
|
||||
result.reg_write := '1';
|
||||
result.reg_link := '1';
|
||||
|
||||
-- when op_lb =>
|
||||
when 32 =>
|
||||
result.imm_src := src_imm32;
|
||||
result.dmem_en := '1';
|
||||
result.reg_write := '1';
|
||||
result.shift_byp := '0';
|
||||
result.byte_en_byp := '1';
|
||||
result.sign_ext_byp := '0';
|
||||
result.load_signed := '1';
|
||||
result.word4_en := '1';
|
||||
|
||||
-- when op_lbu =>
|
||||
when 36 =>
|
||||
result.imm_src := src_imm32;
|
||||
result.dmem_en := '1';
|
||||
result.reg_write := '1';
|
||||
result.shift_byp := '0';
|
||||
result.byte_en_byp := '1';
|
||||
result.sign_ext_byp := '0';
|
||||
result.load_signed := '0';
|
||||
result.word4_en := '1';
|
||||
|
||||
-- when op_lh =>
|
||||
when 33 =>
|
||||
result.imm_src := src_imm32;
|
||||
result.dmem_en := '1';
|
||||
result.reg_write := '1';
|
||||
result.shift_byp := '0';
|
||||
result.sign_ext_byp := '0';
|
||||
result.byte_en_byp := '1';
|
||||
result.load_signed := '1';
|
||||
result.word2_en := '1';
|
||||
result.except_en := '1';
|
||||
|
||||
-- when op_lhu =>
|
||||
when 37 =>
|
||||
result.imm_src := src_imm32;
|
||||
result.dmem_en := '1';
|
||||
result.reg_write := '1';
|
||||
result.shift_byp := '0';
|
||||
result.sign_ext_byp := '0';
|
||||
result.byte_en_byp := '1';
|
||||
result.load_signed := '0';
|
||||
result.word2_en := '1';
|
||||
result.except_en := '1';
|
||||
|
||||
-- when op_lui =>
|
||||
when 15 =>
|
||||
result.imm_src := src_imm16_high;
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_imm;
|
||||
result.alu.outsel := alu_adder;
|
||||
result.reg_write := '1';
|
||||
result.alu.add := '1';
|
||||
|
||||
-- when op_lw =>
|
||||
when 35 =>
|
||||
-- result.imm_src := src_imm32;
|
||||
result.dmem_en := '1';
|
||||
result.reg_write := '1';
|
||||
result.except_en := '1';
|
||||
|
||||
-- when op_lwl =>
|
||||
when 34 =>
|
||||
-- result.imm_src := src_imm32;
|
||||
result.dmem_en := '1';
|
||||
result.reg_write := '1';
|
||||
result.shift_byp := '0';
|
||||
result.byte_en_byp := '0';
|
||||
result.shift_offset := "01";
|
||||
result.align_left := '1';
|
||||
|
||||
-- when op_lwr =>
|
||||
when 38 =>
|
||||
-- result.imm_src := src_imm32;
|
||||
result.dmem_en := '1';
|
||||
result.reg_write := '1';
|
||||
result.shift_byp := '0';
|
||||
result.byte_en_byp := '0';
|
||||
result.shift_offset := "00";
|
||||
result.align_left := '0';
|
||||
|
||||
-- when op_ori =>
|
||||
when 13 =>
|
||||
result.imm_src := src_imm16;
|
||||
result.alu.outsel := alu_or;
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_imm;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_sb =>
|
||||
when 40 =>
|
||||
result.dmem_en := '1';
|
||||
result.dmem_we := '1';
|
||||
-- result.imm_src := src_imm32;
|
||||
result.shift_byp := '0';
|
||||
result.byte_en_byp := '0';
|
||||
result.word4_en := '1';
|
||||
|
||||
-- when op_sh =>
|
||||
when 41 =>
|
||||
result.dmem_en := '1';
|
||||
result.dmem_we := '1';
|
||||
-- result.imm_src := src_imm32;
|
||||
result.shift_byp := '0';
|
||||
result.byte_en_byp := '0';
|
||||
result.word2_en := '1';
|
||||
result.except_en := '1';
|
||||
|
||||
-- when op_slti =>
|
||||
when 10 =>
|
||||
result.alu.outsel := alu_lts;
|
||||
result.alu.add := '0';
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_imm;
|
||||
result.imm_src := src_imm32;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_sltiu =>
|
||||
when 11 =>
|
||||
result.alu.outsel := alu_ltu;
|
||||
result.alu.add := '0';
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_imm;
|
||||
result.imm_src := src_imm32;
|
||||
result.reg_write := '1';
|
||||
|
||||
-- when op_sw =>
|
||||
when 43 =>
|
||||
result.dmem_en := '1';
|
||||
result.dmem_we := '1';
|
||||
-- result.imm_src := src_imm32;
|
||||
result.except_en := '1';
|
||||
|
||||
-- when op_swl =>
|
||||
when 42 =>
|
||||
result.dmem_en := '1';
|
||||
result.dmem_we := '1';
|
||||
-- result.imm_src := src_imm32;
|
||||
result.shift_byp := '0';
|
||||
result.byte_en_byp := '0';
|
||||
result.shift_offset := "01";
|
||||
|
||||
-- when op_swr =>
|
||||
when 46 =>
|
||||
result.dmem_en := '1';
|
||||
result.dmem_we := '1';
|
||||
-- result.imm_src := src_imm32;
|
||||
result.shift_byp := '0';
|
||||
result.byte_en_byp := '0';
|
||||
result.align_left := '1';
|
||||
|
||||
-- when op_xori =>
|
||||
when 14 =>
|
||||
result.imm_src := src_imm16;
|
||||
result.alu.outsel := alu_xor;
|
||||
result.alu.op1_src := alu_src_reg;
|
||||
result.alu.op2_src := alu_src_imm;
|
||||
result.reg_write := '1';
|
||||
|
||||
when others =>
|
||||
result.exc_illegal := '1';
|
||||
|
||||
end case;
|
||||
|
||||
return result;
|
||||
|
||||
end opcode_ctrl_lines;
|
||||
|
||||
function gen_rom_opcode return rom_opcode_t is
|
||||
variable result : rom_opcode_t;
|
||||
variable opc : opcode_t;
|
||||
begin
|
||||
|
||||
for i in 0 to 2**opcode_t'length-1 loop
|
||||
opc := to_unsigned(i, opcode_t'length);
|
||||
result(i) := opcode_ctrl_lines(opc);
|
||||
end loop;
|
||||
|
||||
return result;
|
||||
end gen_rom_opcode;
|
||||
|
||||
end mips_instr;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
@@ -0,0 +1,454 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
|
||||
-- This file: The arithmetic logic unit
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.mips_types.all;
|
||||
|
||||
entity muldiv is
|
||||
Port
|
||||
(
|
||||
rst : in std_logic;
|
||||
clk : in std_logic;
|
||||
hilo_we : in std_logic;
|
||||
din_hi : in word_t;
|
||||
din_lo : in word_t;
|
||||
mul_divn : in std_logic;
|
||||
start : in std_logic;
|
||||
s_un : in std_logic;
|
||||
hilo_sel : in std_logic;
|
||||
busy : out std_logic;
|
||||
dout : out word_t
|
||||
);
|
||||
end muldiv;
|
||||
|
||||
architecture Behavioral of muldiv is
|
||||
|
||||
subtype pprod_t is unsigned (39 downto 0);
|
||||
subtype prod_t is unsigned (63 downto 0);
|
||||
subtype byte_t is unsigned (7 downto 0);
|
||||
|
||||
type pprod_array_t is array (natural range <>) of pprod_t;
|
||||
type word_array_t is array (natural range <>) of word_t;
|
||||
type byte_array_t is array (natural range <>) of byte_t;
|
||||
|
||||
signal pprod : pprod_array_t(0 to 3);
|
||||
signal sign1 : std_logic;
|
||||
signal sign2 : std_logic;
|
||||
signal s1_r : std_logic;
|
||||
signal s2_r : std_logic;
|
||||
signal sr_r : std_logic;
|
||||
signal cy : unsigned (3 downto 0);
|
||||
signal mul_start : std_logic;
|
||||
signal mul_en : std_logic;
|
||||
signal sum_en : std_logic;
|
||||
signal pre_sum_vld : std_logic;
|
||||
signal pp_reg : unsigned (63 downto 8);
|
||||
signal pre_const : word_array_t(0 to 1);
|
||||
signal result : prod_t;
|
||||
signal add_op1 : unsigned (39 downto 0);
|
||||
signal add_op2 : unsigned (39 downto 0);
|
||||
signal add_res : unsigned (39 downto 0);
|
||||
signal ppadd_op1 : word_array_t(0 to 3);
|
||||
signal ppadd_op2 : word_array_t(0 to 3);
|
||||
signal ppadd_res : word_array_t(0 to 3);
|
||||
signal ppadd_cyi : unsigned (3 downto 0);
|
||||
signal ppadd_cyo : unsigned (3 downto 0);
|
||||
|
||||
signal pp_op1_r : word_t;
|
||||
signal pp_op1 : word_t;
|
||||
signal pp_op2 : word_t;
|
||||
signal pp_op2_r : byte_array_t(0 to 3);
|
||||
signal bsy : std_logic;
|
||||
|
||||
signal div_add_res : unsigned (32 downto 0);
|
||||
signal div_add_op1 : unsigned (32 downto 0);
|
||||
signal div_add_op2 : unsigned (32 downto 0);
|
||||
signal div_add_cyi : std_logic;
|
||||
signal div_qbit : std_logic;
|
||||
signal div_start : std_logic;
|
||||
signal div_en : std_logic;
|
||||
|
||||
signal div_A : unsigned (32 downto 0);
|
||||
signal div_M : unsigned (32 downto 0);
|
||||
signal div_M_n : unsigned (32 downto 0);
|
||||
signal div_Q : word_t;
|
||||
|
||||
type md_state_t is (md_rdy, mul_pre1, mul_pre2, mul_pp, mul_sum, div_process, div_post1, div_post2, div_post3);
|
||||
signal s, sn : md_state_t;
|
||||
signal cycle_cnt : natural range 0 to 31;
|
||||
signal cycle_cnt_preset : natural range 0 to 31;
|
||||
signal cycle_cnt_load : std_logic;
|
||||
signal div_fin_en : unsigned (2 downto 0);
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
begin
|
||||
-- 9A0CD0570B88D78
|
||||
|
||||
busy <= bsy;
|
||||
|
||||
sign1 <= din_hi(din_hi'left) and s_un;
|
||||
sign2 <= din_lo(din_lo'left) and s_un;
|
||||
pp_op1 <= not din_hi when sign1 = '1' else din_hi;
|
||||
pp_op2 <= not din_lo when sign2 = '1' else din_lo;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
md_state:
|
||||
process(s, start, mul_divn, cycle_cnt)
|
||||
begin
|
||||
|
||||
bsy <= '1';
|
||||
cycle_cnt_load <= '0';
|
||||
cycle_cnt_preset <= 7;
|
||||
|
||||
mul_en <= '0';
|
||||
div_en <= '0';
|
||||
sum_en <= '0';
|
||||
pre_sum_vld <= '0';
|
||||
mul_start <= '0';
|
||||
div_start <= '0';
|
||||
div_fin_en <= "000";
|
||||
sn <= s;
|
||||
case s is
|
||||
when md_rdy =>
|
||||
bsy <= '0';
|
||||
if start = '1' then
|
||||
if mul_divn = '1' then
|
||||
sn <= mul_pre1;
|
||||
cycle_cnt_load <= '1';
|
||||
cycle_cnt_preset <= 7;
|
||||
mul_start <= '1';
|
||||
else
|
||||
sn <= div_process;
|
||||
cycle_cnt_load <= '1';
|
||||
cycle_cnt_preset <= 31;
|
||||
div_start <= '1';
|
||||
end if;
|
||||
end if;
|
||||
when mul_pre1 =>
|
||||
pre_sum_vld <= '1';
|
||||
mul_en <= '1';
|
||||
sn <= mul_pre2;
|
||||
when mul_pre2 =>
|
||||
pre_sum_vld <= '1';
|
||||
mul_en <= '1';
|
||||
sn <= mul_pp;
|
||||
when mul_pp =>
|
||||
mul_en <= '1';
|
||||
if cycle_cnt = 0 then
|
||||
cycle_cnt_load <= '1';
|
||||
cycle_cnt_preset <= 3;
|
||||
sn <= mul_sum;
|
||||
end if;
|
||||
when mul_sum =>
|
||||
sum_en <= '1';
|
||||
if cycle_cnt = 0 then
|
||||
bsy <= '0';
|
||||
sn <= md_rdy;
|
||||
end if;
|
||||
when div_process =>
|
||||
div_en <= '1';
|
||||
if cycle_cnt = 0 then
|
||||
sn <= div_post1;
|
||||
end if;
|
||||
when div_post1 =>
|
||||
div_fin_en <= "001";
|
||||
sn <= div_post2;
|
||||
when div_post2 =>
|
||||
div_fin_en <= "010";
|
||||
sn <= div_post3;
|
||||
when div_post3 =>
|
||||
div_fin_en <= "100";
|
||||
sn <= md_rdy;
|
||||
bsy <= '0';
|
||||
when others =>
|
||||
sn <= md_rdy;
|
||||
end case;
|
||||
|
||||
end process;
|
||||
|
||||
md_state_next:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if rst = '1' then
|
||||
s <= md_rdy;
|
||||
else
|
||||
s <= sn;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
md_cycle_cnt:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if rst = '1' then
|
||||
cycle_cnt <= 0;
|
||||
elsif cycle_cnt_load = '1' then
|
||||
cycle_cnt <= cycle_cnt_preset;
|
||||
elsif cycle_cnt /= 0 then
|
||||
cycle_cnt <= cycle_cnt - 1;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
proc_out_reg:
|
||||
process(hilo_sel, result)
|
||||
begin
|
||||
if hilo_sel = '1' then
|
||||
dout <= result(63 downto 32);
|
||||
else
|
||||
dout <= result(31 downto 0);
|
||||
end if;
|
||||
end process;
|
||||
|
||||
proc_in_reg:
|
||||
process(clk)
|
||||
variable pre_cond : unsigned(1 downto 0);
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if mul_start = '1' or div_start = '1' then
|
||||
pp_op1_r <= pp_op1;
|
||||
pre_const(0) <= (others => '0');
|
||||
pre_const(1) <= (others => '0');
|
||||
pre_cond := (din_hi(din_hi'left) and s_un) & (din_lo(din_lo'left) and s_un);
|
||||
s1_r <= pre_cond(1);
|
||||
s2_r <= pre_cond(0);
|
||||
sr_r <= pre_cond(0) xor pre_cond(1);
|
||||
case pre_cond is
|
||||
when "01" =>
|
||||
pre_const(0) <= din_hi;
|
||||
pre_const(1) <= X"FFFF_FFFF";
|
||||
when "10" =>
|
||||
pre_const(0) <= X"0000_0000";
|
||||
pre_const(1) <= X"FFFF_FFFF";
|
||||
when "11" =>
|
||||
pre_const(0) <= not din_hi;
|
||||
pre_const(1) <= X"0000_0001";
|
||||
when others => null;
|
||||
end case;
|
||||
elsif pre_sum_vld = '1' then
|
||||
pre_const(0) <= pre_const(1);
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
proc_mul_sr:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if mul_start = '1' then
|
||||
for i in 0 to 3 loop
|
||||
cy(i) <= '0';
|
||||
pprod(i) <= ppadd_res(i) & X"00";
|
||||
end loop;
|
||||
elsif mul_en = '1' then
|
||||
for i in 0 to 3 loop
|
||||
cy(i) <= ppadd_cyo(i);
|
||||
pprod(i) <= ppadd_res(i) & pprod(i)(8 downto 1);
|
||||
end loop;
|
||||
elsif sum_en = '1' then
|
||||
for i in 1 to 3 loop
|
||||
pprod(i-1) <= pprod(i);
|
||||
end loop;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
gen_mul32x8pp:
|
||||
for i in 0 to 3 generate
|
||||
begin
|
||||
|
||||
pp_adder_mux:
|
||||
process(mul_start, pp_op1, pp_op2, pp_op1_r, pp_op2_r(i), s1_r, sign1, pprod(i), cy(i))
|
||||
variable v2 : unsigned(7 downto 0);
|
||||
begin
|
||||
ppadd_cyi(i) <= '0';
|
||||
ppadd_op1(i) <= (others => '0');
|
||||
if mul_start = '1' then
|
||||
ppadd_op2(i) <= (others => '0');
|
||||
v2 := pp_op2(8*(i+1)-1 downto 8*i);
|
||||
if v2(0) = '1' then
|
||||
ppadd_cyi(i) <= sign1;
|
||||
ppadd_op1(i) <= pp_op1;
|
||||
end if;
|
||||
else
|
||||
ppadd_op2(i) <= cy(i) & pprod(i)(39 downto 9);
|
||||
v2 := pp_op2_r(i);
|
||||
if v2(0) = '1' then
|
||||
ppadd_cyi(i) <= s1_r;
|
||||
ppadd_op1(i) <= pp_op1_r;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
pp_adder:
|
||||
process(ppadd_op1(i), ppadd_op2(i), ppadd_cyi(i))
|
||||
variable sum_pp : unsigned(33 downto 0);
|
||||
begin
|
||||
sum_pp := ('0' & ppadd_op1(i) & ppadd_cyi(i)) + ('0' & ppadd_op2(i) & ppadd_cyi(i));
|
||||
ppadd_res(i) <= sum_pp(sum_pp'left-1 downto 1);
|
||||
ppadd_cyo(i) <= sum_pp(sum_pp'left);
|
||||
end process;
|
||||
|
||||
proc_mul_ctrl:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if mul_start = '1' then
|
||||
pp_op2_r(i) <= '0' & pp_op2(8*(i+1)-1 downto 8*i+1);
|
||||
elsif mul_en = '1' then
|
||||
pp_op2_r(i) <= '0' & pp_op2_r(i)(7 downto 1);
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
end generate;
|
||||
|
||||
comb_mul_adder:
|
||||
process(add_op1, add_op2)
|
||||
variable sum_mul : unsigned(39 downto 0);
|
||||
begin
|
||||
sum_mul := (add_op1) + (add_op2);
|
||||
add_res <= sum_mul(sum_mul'left downto 0);
|
||||
end process;
|
||||
|
||||
comb_mul_adder_mux:
|
||||
process(pre_const, pre_sum_vld, pp_reg, pprod, sr_r)
|
||||
variable s_ext : std_logic;
|
||||
begin
|
||||
if pre_sum_vld = '1' then
|
||||
add_op1 <= pp_reg(63 downto 24);
|
||||
add_op2 <= pre_const(0) & X"00";
|
||||
else
|
||||
s_ext := pp_reg(63) and sr_r;
|
||||
add_op1 <= (7 downto 0 => s_ext) & pp_reg(63 downto 32);
|
||||
add_op2 <= pprod(0);
|
||||
end if;
|
||||
end process;
|
||||
|
||||
comb_mul:
|
||||
process(clk)
|
||||
variable tmp : prod_t;
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if mul_start = '1' then
|
||||
pp_reg <= (others => '0');
|
||||
elsif pre_sum_vld = '1' then
|
||||
pp_reg <= add_res & X"0000";
|
||||
elsif sum_en = '1' then
|
||||
tmp := add_res & pp_reg(31 downto 8);
|
||||
pp_reg <= tmp(63 downto 8);
|
||||
result <= tmp;
|
||||
if sr_r = '1' then
|
||||
result <= not tmp;
|
||||
end if;
|
||||
elsif div_fin_en(1) = '1' then
|
||||
result(63 downto 32) <= div_A(31 downto 0);
|
||||
if s1_r = '1' then
|
||||
result(63 downto 32) <= div_add_res(31 downto 0);
|
||||
end if;
|
||||
elsif div_fin_en(2) = '1' then
|
||||
result(31 downto 0) <= div_Q;
|
||||
if sr_r = '1' then
|
||||
result(31 downto 0) <= div_add_res(31 downto 0);
|
||||
end if;
|
||||
elsif hilo_we = '1' then
|
||||
if hilo_sel = '1' then
|
||||
result(63 downto 32) <= din_hi;
|
||||
else
|
||||
result(31 downto 0) <= din_hi;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
div_adder:
|
||||
process(div_add_op1, div_add_op2, div_add_cyi)
|
||||
variable sum_div : unsigned(33 downto 0);
|
||||
begin
|
||||
sum_div := (div_add_op1 & div_add_cyi) + (div_add_op2 & div_add_cyi);
|
||||
div_add_res <= sum_div(sum_div'left downto 1);
|
||||
end process;
|
||||
|
||||
div_adder_mux:
|
||||
process(div_start, div_en, div_fin_en, div_A, div_Q, pp_op1, sign1, s1_r, s2_r, sr_r, div_qbit, div_M, div_M_n)
|
||||
begin
|
||||
|
||||
div_add_cyi <= s2_r xor div_qbit;
|
||||
div_add_op1 <= div_A(31 downto 0) & div_Q(31);
|
||||
div_add_op2 <= (others => '0');
|
||||
if div_start = '1' then
|
||||
div_add_op1 <= '0' & pp_op1;
|
||||
div_add_cyi <= sign1;
|
||||
elsif div_en = '1' then
|
||||
div_add_op2 <= div_M;
|
||||
if div_qbit = '1' then
|
||||
div_add_op2 <= div_M_n;
|
||||
end if;
|
||||
elsif div_fin_en(0) = '1' then
|
||||
div_add_op2 <= div_M;
|
||||
div_add_cyi <= s2_r;
|
||||
div_add_op1 <= '0' & div_A(31 downto 0);
|
||||
elsif div_fin_en(1) = '1' then
|
||||
div_add_cyi <= s1_r;
|
||||
div_add_op1 <= '0' & not div_A(31 downto 0);
|
||||
elsif div_fin_en(2) = '1' then
|
||||
div_add_cyi <= sr_r;
|
||||
div_add_op1 <= '0' & not div_Q;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
divide:
|
||||
process(clk)
|
||||
variable quo : std_logic;
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
if div_start = '1' then
|
||||
div_qbit <= '1';
|
||||
div_Q <= div_add_res(31 downto 0);
|
||||
div_A <= (others => '0');
|
||||
if sign2 = '1' then
|
||||
div_M_n <= '1' & din_lo;
|
||||
div_M <= '0' & not din_lo;
|
||||
else
|
||||
div_M_n <= '1' & not din_lo;
|
||||
div_M <= '0' & din_lo;
|
||||
end if;
|
||||
elsif div_en = '1' then
|
||||
div_qbit <= not div_add_res(32);
|
||||
div_A <= div_add_res(32 downto 0);
|
||||
div_Q <= div_Q(30 downto 0) & not div_add_res(32);
|
||||
elsif div_fin_en(0) = '1' then
|
||||
if div_A(32) = '1' then
|
||||
div_A <= '0' & div_add_res(31 downto 0);
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
end Behavioral;
|
||||
@@ -0,0 +1,918 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
|
||||
-- This file: The pipeline
|
||||
--
|
||||
-- Copyright (C) 2008 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.mips_types.all;
|
||||
use work.mips_instr.all;
|
||||
|
||||
entity pipeline is
|
||||
Port
|
||||
(
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
halt : in STD_LOGIC;
|
||||
int : in unsigned(5 downto 0);
|
||||
imem_err : in STD_LOGIC;
|
||||
imem_rdy : in STD_LOGIC;
|
||||
imem_en : out STD_LOGIC;
|
||||
imem_addr : out word_t;
|
||||
imem_data : in word_t;
|
||||
dmem_err : in STD_LOGIC;
|
||||
dmem_rdy : in STD_LOGIC;
|
||||
dmem_en : out STD_LOGIC;
|
||||
dmem_we : out STD_LOGIC;
|
||||
dmem_be : out unsigned(3 downto 0);
|
||||
dmem_addr : out word_t;
|
||||
dmem_din : in word_t;
|
||||
dmem_dout : out word_t
|
||||
);
|
||||
end pipeline;
|
||||
|
||||
architecture Behavioral of pipeline is
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
COMPONENT reg_dual is
|
||||
Generic
|
||||
(
|
||||
addr_width : integer := 3;
|
||||
data_width : integer := 8
|
||||
);
|
||||
Port
|
||||
(
|
||||
clk_w : in STD_LOGIC;
|
||||
en : in STD_LOGIC;
|
||||
we : in STD_LOGIC;
|
||||
wptr : in unsigned (addr_width-1 downto 0);
|
||||
din : in unsigned (data_width-1 downto 0);
|
||||
rptr_a : in unsigned (addr_width-1 downto 0);
|
||||
rptr_b : in unsigned (addr_width-1 downto 0);
|
||||
dout_a : out unsigned (data_width-1 downto 0);
|
||||
dout_b : out unsigned (data_width-1 downto 0)
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
COMPONENT idecode_rom is
|
||||
Port
|
||||
(
|
||||
nop : in std_logic;
|
||||
inst_in : in word_t;
|
||||
ctrl_out : out ctrl_lines_t
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
COMPONENT shifter is
|
||||
Generic
|
||||
(
|
||||
data_width : integer
|
||||
);
|
||||
Port
|
||||
(
|
||||
shift_ctrl : in shift_ctrl_t;
|
||||
din : in unsigned (data_width-1 downto 0);
|
||||
dout : out unsigned (data_width-1 downto 0)
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
COMPONENT alu is
|
||||
Generic
|
||||
(
|
||||
data_width : integer
|
||||
);
|
||||
Port
|
||||
(
|
||||
op1_in : in unsigned (data_width-1 downto 0);
|
||||
op2_in : in unsigned (data_width-1 downto 0);
|
||||
op2_shifted : in unsigned (data_width-1 downto 0);
|
||||
ctrl : in alu_ctrl_t;
|
||||
result : out unsigned (data_width-1 downto 0);
|
||||
flags : out alu_flags_t
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
COMPONENT bcu is
|
||||
Generic
|
||||
(
|
||||
data_width : integer
|
||||
);
|
||||
Port
|
||||
(
|
||||
op1_in : in unsigned (data_width-1 downto 0);
|
||||
op2_in : in unsigned (data_width-1 downto 0);
|
||||
flags : out bcu_flags_t
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
COMPONENT cop is
|
||||
Port
|
||||
(
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
sdu : in sdu_t;
|
||||
IR_valid : in STD_LOGIC;
|
||||
IR : in word_t;
|
||||
events : in event_t;
|
||||
ctrl_in : in cop_ctrl_in_t;
|
||||
ctrl_out : out cop_ctrl_out_t;
|
||||
din : in word_t;
|
||||
dout : out word_t
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
COMPONENT muldiv is
|
||||
Port
|
||||
(
|
||||
rst : in std_logic;
|
||||
clk : in std_logic;
|
||||
hilo_we : in std_logic;
|
||||
din_hi : in word_t;
|
||||
din_lo : in word_t;
|
||||
mul_divn : in std_logic;
|
||||
start : in std_logic;
|
||||
s_un : in std_logic;
|
||||
hilo_sel : in std_logic;
|
||||
busy : out std_logic;
|
||||
dout : out word_t
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
constant RESET_VECTOR : word_t := X"BFC00000";
|
||||
|
||||
signal ID_stage : ID_t;
|
||||
signal EX_stage : EX_t;
|
||||
signal MEM_stage : MEM_t;
|
||||
signal WB_stage : WB_t;
|
||||
signal clk_2, clk_1 : STD_LOGIC;
|
||||
signal hdu : hdu_t;
|
||||
signal sdu : sdu_t;
|
||||
signal cpu_rst : STD_LOGIC;
|
||||
signal reg_a : word_t;
|
||||
signal reg_b : word_t;
|
||||
signal ctrl_lines : ctrl_lines_t;
|
||||
signal cpu_run : STD_LOGIC;
|
||||
signal branch_ce : STD_LOGIC;
|
||||
signal run_en : STD_LOGIC;
|
||||
signal mul_dep : STD_LOGIC;
|
||||
signal imem_dep : STD_LOGIC;
|
||||
signal dmem_dep : STD_LOGIC;
|
||||
signal cop_ctrl : cop_ctrl_in_t;
|
||||
signal cop_stat : cop_ctrl_out_t;
|
||||
signal cop_din : word_t;
|
||||
signal cop_dout : word_t;
|
||||
signal alu_result : word_t;
|
||||
signal mul_result : word_t;
|
||||
signal mul_busy : STD_LOGIC;
|
||||
signal EX_events_instr : event_t;
|
||||
signal EX_events_alu : event_t;
|
||||
signal EX_events_mem : event_t;
|
||||
signal EX_events : event_t;
|
||||
signal MEM_events : event_t;
|
||||
signal bcu_op_a : word_t;
|
||||
signal bcu_op_b : word_t;
|
||||
signal bcu_flags : bcu_flags_t;
|
||||
signal vaddr : word_t;
|
||||
|
||||
attribute ram_style : string;
|
||||
|
||||
attribute ram_style of reg_a: signal is "distributed";
|
||||
attribute ram_style of reg_b: signal is "distributed";
|
||||
|
||||
signal pc : pc_t;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
begin
|
||||
|
||||
clk_1 <= clk;
|
||||
clk_2 <= not clk;
|
||||
cpu_run <= run_en;
|
||||
|
||||
-- Stall Detection Unit ---------------------------------------------------
|
||||
sdu.ID_nop <= imem_dep or cop_stat.exc_pending or EX_stage.exc or MEM_stage.exc;
|
||||
sdu.EX_nop <= mul_dep or ID_stage.nop or ID_stage.exc;
|
||||
sdu.MEM_nop <= EX_stage.nop or EX_stage.exc;
|
||||
sdu.WB_nop <= dmem_dep or MEM_stage.nop;
|
||||
|
||||
sdu.ID_stall <= dmem_dep or imem_dep or mul_dep or ID_stage.exc;
|
||||
sdu.EX_stall <= dmem_dep;
|
||||
sdu.MEM_stall <= dmem_dep;
|
||||
sdu.WB_stall <= '0';
|
||||
|
||||
mul_dep <= ID_stage.ctrl.mul_access and (EX_stage.ctrl.mul_start or mul_busy);
|
||||
imem_dep <= not imem_rdy;
|
||||
dmem_dep <= not dmem_rdy and MEM_stage.ctrl.dmem_en;
|
||||
---------------------------------------------------------------------------
|
||||
imem_en <= cpu_run and not (mul_dep or dmem_dep or cop_stat.exc_commit);
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- Muldiv
|
||||
--------------------------------------------------------------------------
|
||||
inst_muldiv: muldiv
|
||||
PORT MAP
|
||||
(
|
||||
rst => cpu_rst,
|
||||
clk => clk,
|
||||
hilo_we => EX_stage.ctrl.mul_hilo_we,
|
||||
din_hi => EX_stage.reg_a,
|
||||
din_lo => EX_stage.reg_b,
|
||||
mul_divn => EX_stage.ctrl.mul_mul_divn,
|
||||
start => EX_stage.ctrl.mul_start,
|
||||
s_un => EX_stage.ctrl.mul_s_un,
|
||||
hilo_sel => EX_stage.ctrl.mul_hilo_sel,
|
||||
busy => mul_busy,
|
||||
dout => mul_result
|
||||
);
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- Coprocessor
|
||||
--------------------------------------------------------------------------
|
||||
inst_cop: cop
|
||||
PORT MAP
|
||||
(
|
||||
rst => cpu_rst,
|
||||
clk => clk,
|
||||
sdu => sdu,
|
||||
events => MEM_stage.events,
|
||||
IR_valid => ID_stage.ctrl.cop_instr_en,
|
||||
IR => ID_stage.IR,
|
||||
ctrl_in => cop_ctrl,
|
||||
ctrl_out => cop_stat,
|
||||
dout => cop_dout,
|
||||
din => cop_din
|
||||
);
|
||||
|
||||
cop_ctrl.bd_wb <= WB_stage.bd;
|
||||
cop_ctrl.epc_mem <= MEM_stage.pcn;
|
||||
cop_ctrl.epc_wb <= MEM_stage.epc;
|
||||
cop_ctrl.imem_addr <= pc.nxt;
|
||||
cop_ctrl.dmem_addr <= MEM_stage.va;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- IF stage
|
||||
--------------------------------------------------------------------------
|
||||
imem_addr <= pc.curr;
|
||||
|
||||
proc_stage_pc:
|
||||
process(pc, rst, cop_stat)
|
||||
begin
|
||||
if rst = '1' then
|
||||
pc.curr <= RESET_VECTOR after 2 ns;
|
||||
else
|
||||
if pc.is_branch and cop_stat.exc_pending = '0' then
|
||||
pc.curr <= pc.pc_branch after 2 ns;
|
||||
else
|
||||
pc.curr <= pc.nxt after 2 ns;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
proc_stage_pc_branch:
|
||||
process(clk_1)
|
||||
begin
|
||||
if rising_edge(clk_1) then
|
||||
if sdu.ID_stall = '0' then
|
||||
pc.pc_branch <= pc.curr + ID_stage.bimm18;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
proc_stage_pc_next:
|
||||
process(clk_1)
|
||||
begin
|
||||
if rising_edge(clk_1) then
|
||||
branch_ce <= '0';
|
||||
cop_ctrl.exc_left <= '0';
|
||||
if rst = '1' then
|
||||
pc.nxt <= pc.curr;
|
||||
pc.last <= pc.curr;
|
||||
else
|
||||
if cop_stat.exc_commit = '1' then
|
||||
pc.nxt <= cop_stat.exc_vec;
|
||||
elsif sdu.ID_stall = '0' then
|
||||
cop_ctrl.exc_left <= cop_stat.exc_exit;
|
||||
branch_ce <= '1';
|
||||
pc.last <= pc.curr;
|
||||
if ID_stage.ctrl.jump = '1' then
|
||||
pc.nxt <= ID_stage.jimm32;
|
||||
elsif ID_stage.ctrl.jump_long = '1' then
|
||||
pc.nxt <= ID_stage.reg_a;
|
||||
else
|
||||
pc.nxt <= pc.curr + 4;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
proc_stage_branch:
|
||||
process(clk_2)
|
||||
begin
|
||||
if rising_edge(clk_2) and branch_ce = '1' then
|
||||
pc.is_branch <= false;
|
||||
if EX_stage.ctrl.branch = '1' then
|
||||
|
||||
case EX_stage.ctrl.bc_src is
|
||||
|
||||
when bc_eq_ne =>
|
||||
if (EX_stage.ctrl.bc_not xor bcu_flags.eq) = '1' then
|
||||
pc.is_branch <= true;
|
||||
end if;
|
||||
|
||||
when bc_lez_gtz =>
|
||||
if (EX_stage.ctrl.bc_not xor (bcu_flags.eq or bcu_flags.ltz)) = '1' then
|
||||
pc.is_branch <= true;
|
||||
end if;
|
||||
|
||||
when bc_ltz_gez =>
|
||||
if (EX_stage.ctrl.bc_not xor bcu_flags.ltz) = '1' then
|
||||
pc.is_branch <= true;
|
||||
end if;
|
||||
|
||||
when others => null;
|
||||
end case;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
process(rst, clk_1)
|
||||
variable reset_delay : unsigned (5 downto 0);
|
||||
begin
|
||||
if rising_edge(clk_1) then
|
||||
if rst = '1' then
|
||||
reset_delay := (others => '1');
|
||||
cpu_rst <= '1';
|
||||
run_en <= '0';
|
||||
elsif reset_delay /= (5 downto 0 => '0') then
|
||||
reset_delay := reset_delay - 1;
|
||||
else
|
||||
cpu_rst <= '0';
|
||||
end if;
|
||||
if reset_delay(reset_delay'left-1) = '0' then
|
||||
run_en <= '1';
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- ID stage
|
||||
--------------------------------------------------------------------------
|
||||
ID_stage.IR <= to_01(imem_data);
|
||||
ID_stage.pcn <= pc.curr;
|
||||
ID_stage.op <= decode_op(ID_stage.IR);
|
||||
ID_stage.jimm32 <= extract_jimm32(ID_stage.IR, ID_stage.pcn);
|
||||
ID_stage.bimm18 <= extract_bimm18(ID_stage.IR, ID_stage.pcn);
|
||||
ID_stage.shamt <= extract_shamt(ID_stage.IR);
|
||||
ID_stage.reg_a_rptr <= extract_rs(ID_stage.IR);
|
||||
ID_stage.reg_b_rptr <= extract_rt(ID_stage.IR);
|
||||
ID_stage.ctrl <= ctrl_lines;
|
||||
ID_stage.reg_write <= ID_stage.ctrl.reg_write or cop_stat.reg_write;
|
||||
ID_stage.epc <= pc.last;
|
||||
ID_stage.exc <= event_is_active(ID_stage.events); -- Todo: works
|
||||
ID_stage.nop <= sdu.ID_nop;
|
||||
|
||||
proc_ID_except:
|
||||
process(ID_stage, cop_stat, pc)
|
||||
begin
|
||||
ID_stage.events <= events_clr;
|
||||
ID_stage.events.inst_load_err <= pc.nxt(1) or pc.nxt(0);
|
||||
ID_stage.events.inst_priv_addr <= pc.nxt(word_t'left) and cop_stat.user_mode;
|
||||
end process;
|
||||
|
||||
proc_stage_hdu:
|
||||
process(ID_stage, EX_stage, MEM_stage, WB_stage)
|
||||
variable read_a, read_b : boolean;
|
||||
variable raw_a_EX, raw_a_MEM, raw_a_WB : boolean;
|
||||
variable raw_b_EX, raw_b_MEM, raw_b_WB : boolean;
|
||||
variable reg_ptr_a : reg_ptr_t;
|
||||
variable reg_ptr_b : reg_ptr_t;
|
||||
begin
|
||||
|
||||
reg_ptr_a := ID_stage.reg_a_rptr;
|
||||
reg_ptr_b := ID_stage.reg_b_rptr;
|
||||
raw_a_EX := reg_ptr_a = EX_stage.reg_wptr and EX_stage.wreg_we = '1';
|
||||
raw_a_MEM := reg_ptr_a = MEM_stage.reg_wptr and MEM_stage.wreg_we = '1';
|
||||
raw_a_WB := reg_ptr_a = WB_stage.reg_wptr and WB_stage.wreg_we = '1';
|
||||
raw_b_EX := reg_ptr_b = EX_stage.reg_wptr and EX_stage.wreg_we = '1';
|
||||
raw_b_MEM := reg_ptr_b = MEM_stage.reg_wptr and MEM_stage.wreg_we = '1';
|
||||
raw_b_WB := reg_ptr_b = WB_stage.reg_wptr and WB_stage.wreg_we = '1';
|
||||
|
||||
hdu.alu_fwd_a_ex <= raw_a_EX after 1 ns;
|
||||
hdu.alu_fwd_a_mem <= raw_a_MEM after 1 ns;
|
||||
hdu.alu_fwd_a_wb <= raw_a_WB after 1 ns;
|
||||
hdu.alu_fwd_b_ex <= raw_b_EX after 1 ns;
|
||||
hdu.alu_fwd_b_mem <= raw_b_MEM after 1 ns;
|
||||
hdu.alu_fwd_b_wb <= raw_b_WB after 1 ns;
|
||||
|
||||
end process;
|
||||
|
||||
proc_stage_fwd_a:
|
||||
process(reg_a, hdu, EX_stage, MEM_stage, WB_stage)
|
||||
variable data : word_t;
|
||||
begin
|
||||
data := reg_a;
|
||||
if hdu.alu_fwd_a_ex then
|
||||
data := EX_stage.result;
|
||||
elsif hdu.alu_fwd_a_mem then
|
||||
data := MEM_stage.data;
|
||||
elsif hdu.alu_fwd_a_wb then
|
||||
data := WB_stage.data;
|
||||
end if;
|
||||
ID_stage.reg_a <= to_01(data) after 2 ns;
|
||||
end process;
|
||||
|
||||
proc_stage_fwd_b:
|
||||
process(reg_b, hdu, EX_stage, MEM_stage, WB_stage)
|
||||
variable data : word_t;
|
||||
begin
|
||||
data := reg_b;
|
||||
if hdu.alu_fwd_b_ex then
|
||||
data := EX_stage.result;
|
||||
elsif hdu.alu_fwd_b_mem then
|
||||
data := MEM_stage.data;
|
||||
elsif hdu.alu_fwd_b_wb then
|
||||
data := WB_stage.data;
|
||||
end if;
|
||||
ID_stage.reg_b <= to_01(data) after 2 ns;
|
||||
end process;
|
||||
|
||||
proc_imm_mux:
|
||||
process(ID_stage)
|
||||
variable data : word_t;
|
||||
begin
|
||||
data := extract_uimm16(ID_stage.IR);
|
||||
|
||||
case ID_stage.ctrl.imm_src is
|
||||
|
||||
when src_imm32 =>
|
||||
data := extract_simm32(ID_stage.IR);
|
||||
|
||||
when src_imm16 =>
|
||||
data := extract_uimm16(ID_stage.IR);
|
||||
|
||||
when src_imm16_high =>
|
||||
data := ID_stage.IR(word_t'length/2-1 downto 0) & (word_t'length/2-1 downto 0 => '0');
|
||||
|
||||
when others => null;
|
||||
|
||||
end case;
|
||||
|
||||
ID_stage.imm <= data after 2 ns;
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
inst_idecode_rom: idecode_rom
|
||||
PORT MAP
|
||||
(
|
||||
nop => sdu.ID_nop,
|
||||
inst_in => ID_stage.IR,
|
||||
ctrl_out => ctrl_lines
|
||||
);
|
||||
|
||||
inst_reg_dual: reg_dual
|
||||
GENERIC MAP
|
||||
(
|
||||
addr_width => reg_ptr_t'length,
|
||||
data_width => word_t'length
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
clk_w => clk_1,
|
||||
we => WB_stage.wreg_we,
|
||||
en => '1',
|
||||
wptr => WB_stage.reg_wptr,
|
||||
din => WB_stage.data,
|
||||
rptr_a => ID_stage.reg_a_rptr,
|
||||
rptr_b => ID_stage.reg_b_rptr,
|
||||
dout_a => reg_a,
|
||||
dout_b => reg_b
|
||||
);
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- EX stage
|
||||
--------------------------------------------------------------------------
|
||||
EX_stage.reg_a_rptr <= extract_rs(EX_stage.IR);
|
||||
EX_stage.reg_b_rptr <= extract_rt(EX_stage.IR);
|
||||
EX_stage.result <= alu_result when EX_stage.ctrl.mul_access = '0' else mul_result;
|
||||
|
||||
proc_stage_ID_EX_1:
|
||||
process(clk_1)
|
||||
begin
|
||||
if rising_edge(clk_1) then
|
||||
if rst = '1' then
|
||||
EX_stage.op <= NOP;
|
||||
EX_stage.IR <= (others => '0');
|
||||
EX_stage.ctrl <= ctrl_lines_default;
|
||||
EX_stage.reg_write <= '0';
|
||||
EX_stage.epc <= (others => '0');
|
||||
EX_stage.pcn <= (others => '0');
|
||||
EX_stage.events_in <= events_clr;
|
||||
elsif sdu.EX_stall = '0' then
|
||||
EX_stage.reg_a <= ID_stage.reg_a;
|
||||
EX_stage.reg_b <= ID_stage.reg_b;
|
||||
EX_stage.events_in <= ID_stage.events;
|
||||
EX_stage.op <= ID_stage.op;
|
||||
EX_stage.ctrl <= ID_stage.ctrl;
|
||||
EX_stage.reg_write <= ID_stage.reg_write;
|
||||
EX_stage.nop <= sdu.EX_nop;
|
||||
EX_stage.IR <= ID_stage.IR;
|
||||
EX_stage.pcn <= ID_stage.pcn;
|
||||
if sdu.EX_nop = '1' then
|
||||
EX_stage.op <= NOP;
|
||||
EX_stage.IR <= (others => '0');
|
||||
EX_stage.ctrl <= ctrl_lines_default;
|
||||
EX_stage.reg_write <= '0';
|
||||
else
|
||||
EX_stage.epc <= ID_stage.epc;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
proc_stage_EX_instr_except:
|
||||
process(EX_stage)
|
||||
begin
|
||||
EX_events_instr <= events_clr;
|
||||
EX_events_instr.illegal <= EX_stage.ctrl.exc_illegal;
|
||||
EX_events_instr.break <= EX_stage.ctrl.exc_break;
|
||||
EX_events_instr.syscall <= EX_stage.ctrl.exc_syscall;
|
||||
end process;
|
||||
|
||||
proc_stage_EX_alu_except:
|
||||
process(EX_stage)
|
||||
begin
|
||||
EX_events_alu <= events_clr;
|
||||
if EX_stage.ctrl.alu_exc_en = '1' then
|
||||
if EX_stage.alu_flags.ovf = '1' then
|
||||
EX_events_alu.alu_ovf <= '1';
|
||||
end if;
|
||||
if EX_stage.alu_flags.uvf = '1' then
|
||||
EX_events_alu.alu_uvf <= '1';
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
vaddr <= ID_stage.reg_a + extract_simm32(ID_stage.IR);
|
||||
|
||||
proc_stage_EX_mem_except:
|
||||
process(clk_1)
|
||||
begin
|
||||
if rising_edge(clk_1) then
|
||||
if rst = '1' then
|
||||
dmem_en <= '0';
|
||||
elsif sdu.EX_stall = '0' then
|
||||
EX_events_mem <= events_clr;
|
||||
dmem_en <= '0';
|
||||
if ID_stage.ctrl.dmem_en = '1' then
|
||||
dmem_en <= '1';
|
||||
if ID_stage.ctrl.except_en = '1' then
|
||||
if ID_stage.ctrl.word2_en = '1' then
|
||||
if vaddr(0) = '1' then
|
||||
EX_events_mem.data_load_err <= not ID_stage.ctrl.dmem_we;
|
||||
EX_events_mem.data_store_err <= ID_stage.ctrl.dmem_we;
|
||||
dmem_en <= '0';
|
||||
end if;
|
||||
elsif vaddr(1 downto 0) /= "00" then
|
||||
EX_events_mem.data_load_err <= not ID_stage.ctrl.dmem_we;
|
||||
EX_events_mem.data_store_err <= ID_stage.ctrl.dmem_we;
|
||||
dmem_en <= '0';
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
proc_stage_DMEM_ADDR:
|
||||
process(clk_1)
|
||||
begin
|
||||
if rising_edge(clk_1) then
|
||||
if sdu.EX_stall = '0' then --and ID_stage.ctrl.dmem_en = '1' then
|
||||
EX_stage.va <= vaddr;
|
||||
if cop_stat.RE = '1' then
|
||||
EX_stage.pa_off <= not vaddr(1 downto 0);
|
||||
else
|
||||
EX_stage.pa_off <= vaddr(1 downto 0);
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
dmem_be <= store_be(EX_stage.pa_off, EX_stage.ctrl.dmem_we, EX_stage.ctrl.word2_en, EX_stage.ctrl.word4_en, EX_stage.ctrl.align_left, EX_stage.ctrl.byte_en_byp) after 1 ns;
|
||||
dmem_we <= EX_stage.ctrl.dmem_we;
|
||||
dmem_dout <= store_shift(EX_stage.reg_b, EX_stage.pa_off, EX_stage.ctrl.shift_offset, EX_stage.ctrl.shift_byp) after 1ns;
|
||||
dmem_addr <= EX_stage.va;
|
||||
cop_din <= EX_stage.reg_b;
|
||||
EX_stage.events <= EX_events_instr or EX_events_mem or EX_events_alu or EX_stage.events_in;
|
||||
EX_stage.exc <= event_is_active(EX_stage.events);
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
proc_wptr_mux:
|
||||
process(EX_stage)
|
||||
variable opclass : opcode_t;
|
||||
variable reg_wptr : reg_ptr_t;
|
||||
begin
|
||||
|
||||
opclass := extract_opc(EX_stage.IR);
|
||||
case opclass is
|
||||
when "000000" =>
|
||||
reg_wptr := extract_rd(EX_stage.IR);
|
||||
when others =>
|
||||
reg_wptr := extract_rt(EX_stage.IR);
|
||||
end case;
|
||||
|
||||
EX_stage.wreg_we <= EX_stage.reg_write after 1 ns;
|
||||
if reg_wptr = "00000" then
|
||||
EX_stage.wreg_we <= '0' after 1 ns;
|
||||
end if;
|
||||
|
||||
EX_stage.reg_wptr <= reg_wptr after 1 ns;
|
||||
case EX_stage.ctrl.wptr_srcsel is
|
||||
when wptr_src_imm =>
|
||||
EX_stage.reg_wptr <= reg_wptr after 1 ns;
|
||||
|
||||
when wptr_src_const =>
|
||||
EX_stage.reg_wptr <= to_unsigned(31, reg_ptr_t'length) after 1 ns;
|
||||
EX_stage.wreg_we <= '1' after 1 ns;
|
||||
|
||||
when others => null;
|
||||
end case;
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
proc_stage_bcu_op:
|
||||
process(clk_1)
|
||||
begin
|
||||
if rising_edge(clk_1) and sdu.EX_stall = '0' then
|
||||
bcu_op_a <= ID_stage.reg_a;
|
||||
bcu_op_b <= ID_stage.reg_b;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
alu_op1_mux:
|
||||
process(EX_stage)
|
||||
variable data : word_t;
|
||||
begin
|
||||
|
||||
data := EX_stage.reg_a;
|
||||
|
||||
-- case EX_stage.ctrl.alu.op1_src is
|
||||
--
|
||||
-- when alu_src_reg =>
|
||||
-- data := EX_stage.reg_a;
|
||||
--
|
||||
-- when alu_src_muldiv =>
|
||||
-- data := mul_result;
|
||||
--
|
||||
-- when others => null;
|
||||
--
|
||||
-- end case;
|
||||
|
||||
EX_stage.alu_op1 <= data;
|
||||
|
||||
end process;
|
||||
|
||||
alu_op2_mux:
|
||||
process(clk_1)
|
||||
variable data : word_t;
|
||||
begin
|
||||
|
||||
if rising_edge(clk_1) and sdu.EX_stall = '0' then
|
||||
data := ID_stage.reg_b;
|
||||
|
||||
case ID_stage.ctrl.alu.op2_src is
|
||||
|
||||
when alu_src_reg =>
|
||||
data := ID_stage.reg_b;
|
||||
|
||||
when alu_src_imm =>
|
||||
data := ID_stage.imm;
|
||||
|
||||
when others => null;
|
||||
|
||||
end case;
|
||||
|
||||
EX_stage.alu_op2 <= data;
|
||||
end if;
|
||||
|
||||
end process;
|
||||
|
||||
shifter_sa_mux:
|
||||
process(clk_1)
|
||||
variable data : shamt_t;
|
||||
variable data_inv : shamt_t;
|
||||
|
||||
begin
|
||||
if rising_edge(clk_1) and sdu.EX_stall = '0' then
|
||||
data := ID_stage.reg_a(4 downto 0);
|
||||
case ID_stage.ctrl.shamt2_srcsel is
|
||||
|
||||
when sa_src_reg =>
|
||||
data := ID_stage.reg_a(4 downto 0);
|
||||
|
||||
when sa_src_imm =>
|
||||
data := ID_stage.shamt;
|
||||
|
||||
when others => null;
|
||||
|
||||
end case;
|
||||
data_inv := not data + 1;
|
||||
if ID_stage.ctrl.alu.shift_right = '0' then
|
||||
EX_stage.shift_ctrl.shamt_rnd <= data_inv after 2 ns;
|
||||
else
|
||||
EX_stage.shift_ctrl.shamt_rnd <= data after 2 ns;
|
||||
end if;
|
||||
EX_stage.shift_ctrl.shamt_nrm <= data after 1 ns;
|
||||
EX_stage.shift_ctrl.shift_right <= ID_stage.ctrl.alu.shift_right;
|
||||
EX_stage.shift_ctrl.shift_arith <= ID_stage.ctrl.alu.shift_arith;
|
||||
end if;
|
||||
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
inst_shifter: shifter
|
||||
GENERIC MAP
|
||||
(
|
||||
data_width => word_t'length
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
shift_ctrl => EX_stage.shift_ctrl,
|
||||
din => EX_stage.reg_b,
|
||||
dout => EX_stage.alu_op2_s
|
||||
);
|
||||
|
||||
inst_alu: alu
|
||||
GENERIC MAP
|
||||
(
|
||||
data_width => word_t'length
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
op1_in => EX_stage.alu_op1,
|
||||
op2_in => EX_stage.alu_op2,
|
||||
op2_shifted => EX_stage.alu_op2_s,
|
||||
ctrl => EX_stage.ctrl.alu,
|
||||
result => alu_result,
|
||||
flags => EX_stage.alu_flags
|
||||
);
|
||||
|
||||
inst_bcu: bcu
|
||||
GENERIC MAP
|
||||
(
|
||||
data_width => word_t'length
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
op1_in => bcu_op_a,
|
||||
op2_in => bcu_op_b,
|
||||
flags => bcu_flags
|
||||
);
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- MEM stage
|
||||
--------------------------------------------------------------------------
|
||||
proc_stage_MEM_n:
|
||||
process(clk_1)
|
||||
begin
|
||||
if rising_edge(clk_1) then
|
||||
if rst = '1' then
|
||||
MEM_stage.op <= NOP;
|
||||
MEM_stage.wreg_we <= '0';
|
||||
MEM_stage.ctrl <= ctrl_lines_default;
|
||||
MEM_stage.pa_off <= (others => '0');
|
||||
MEM_stage.events_in <= events_clr;
|
||||
-- MEM_stage.epc <= (others => '0');
|
||||
-- MEM_stage.pcn <= (others => '0');
|
||||
-- MEM_stage.va <= (others => '0');
|
||||
-- MEM_stage.reg_wptr <= (others => '0');
|
||||
-- MEM_stage.ex_result <= (others => '0');
|
||||
elsif sdu.MEM_stall = '0' then
|
||||
MEM_stage.events_in <= EX_stage.events;
|
||||
MEM_stage.op <= EX_stage.op;
|
||||
MEM_stage.wreg_we <= EX_stage.wreg_we;
|
||||
MEM_stage.ctrl <= EX_stage.ctrl;
|
||||
MEM_stage.va <= EX_stage.va;
|
||||
MEM_stage.pa_off <= EX_stage.pa_off;
|
||||
MEM_stage.reg_wptr <= EX_stage.reg_wptr;
|
||||
MEM_stage.nop <= sdu.MEM_nop;
|
||||
if EX_stage.ctrl.dmem_en = '1' then
|
||||
MEM_stage.ex_result <= EX_stage.reg_b;
|
||||
else
|
||||
MEM_stage.ex_result <= EX_stage.result;
|
||||
if cop_stat.cop_read = '1' then
|
||||
MEM_stage.ex_result <= cop_dout;
|
||||
end if;
|
||||
end if;
|
||||
if sdu.MEM_nop = '1' then
|
||||
MEM_stage.op <= NOP;
|
||||
MEM_stage.wreg_we <= '0';
|
||||
MEM_stage.ctrl <= ctrl_lines_default;
|
||||
else
|
||||
MEM_stage.pcn <= EX_stage.pcn;
|
||||
MEM_stage.epc <= EX_stage.epc;
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
proc_stage_MEM_mux:
|
||||
process(MEM_stage, dmem_din)
|
||||
variable temp1 : word_t;
|
||||
variable temp2 : word_t;
|
||||
variable data : word_t;
|
||||
variable be : unsigned(3 downto 0);
|
||||
begin
|
||||
data := MEM_stage.ex_result;
|
||||
be := load_be(MEM_stage.pa_off, MEM_stage.ctrl.align_left, MEM_stage.ctrl.byte_en_byp);
|
||||
if MEM_stage.ctrl.reg_link = '1' then
|
||||
data := MEM_stage.pcn + 4;
|
||||
elsif MEM_stage.ctrl.dmem_en = '1' then
|
||||
temp1 := load_shift(dmem_din, MEM_stage.pa_off, MEM_stage.ctrl.shift_offset, MEM_stage.ctrl.shift_byp);
|
||||
temp2 := load_sign_ext(temp1, MEM_stage.ctrl.sign_ext_byp, MEM_stage.ctrl.load_signed, MEM_stage.ctrl.word2_en, MEM_stage.ctrl.word4_en);
|
||||
if be(0) = '1' then
|
||||
data(7 downto 0) := temp2(7 downto 0);
|
||||
end if;
|
||||
if be(1) = '1' then
|
||||
data(15 downto 8) := temp2(15 downto 8);
|
||||
end if;
|
||||
if be(2) = '1' then
|
||||
data(23 downto 16) := temp2(23 downto 16);
|
||||
end if;
|
||||
if be(3) = '1' then
|
||||
data(31 downto 24) := temp2(31 downto 24);
|
||||
end if;
|
||||
end if;
|
||||
MEM_stage.data <= data after 1 ns;
|
||||
|
||||
end process;
|
||||
|
||||
proc_stage_MEM_except:
|
||||
process(MEM_stage, int)
|
||||
begin
|
||||
MEM_stage.events <= MEM_stage.events_in;
|
||||
MEM_stage.events.Int <= int;
|
||||
end process;
|
||||
|
||||
MEM_stage.exc <= cop_stat.int or event_is_active(MEM_stage.events_in);
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
-- WB stage
|
||||
--------------------------------------------------------------------------
|
||||
proc_stage_WB_p:
|
||||
process(clk_1)
|
||||
begin
|
||||
if rising_edge(clk_1) then
|
||||
if rst = '1' then
|
||||
WB_stage.op <= NOP;
|
||||
WB_stage.wreg_we <= '0';
|
||||
-- WB_stage.epc <= (others => '0');
|
||||
-- WB_stage.reg_wptr <= (others => '0');
|
||||
-- WB_stage.data <= (others => '0');
|
||||
elsif sdu.WB_stall = '0' then
|
||||
WB_stage.op <= MEM_stage.op;
|
||||
WB_stage.wreg_we <= MEM_stage.wreg_we;
|
||||
WB_stage.reg_wptr <= MEM_stage.reg_wptr;
|
||||
WB_stage.data <= MEM_stage.data;
|
||||
WB_stage.nop <= sdu.WB_nop;
|
||||
if sdu.WB_nop = '1' then
|
||||
WB_stage.op <= NOP;
|
||||
WB_stage.wreg_we <= '0';
|
||||
else
|
||||
WB_stage.epc <= MEM_stage.epc;
|
||||
WB_stage.bd <= MEM_stage.ctrl.branch or MEM_stage.ctrl.jump or MEM_stage.ctrl.jump_long; -- Todo: works
|
||||
end if;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
end Behavioral;
|
||||
@@ -0,0 +1,81 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
|
||||
-- This file: On-Chip work registers
|
||||
--
|
||||
-- Copyright (C) 2008 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.mips_types.all;
|
||||
|
||||
entity reg_dual is
|
||||
Generic
|
||||
(
|
||||
addr_width : integer := 3;
|
||||
data_width : integer := 8
|
||||
);
|
||||
Port (
|
||||
clk_w : in STD_LOGIC;
|
||||
we : in STD_LOGIC;
|
||||
en : in STD_LOGIC;
|
||||
wptr : in unsigned (addr_width-1 downto 0);
|
||||
din : in unsigned (data_width-1 downto 0);
|
||||
rptr_a : in unsigned (addr_width-1 downto 0);
|
||||
rptr_b : in unsigned (addr_width-1 downto 0);
|
||||
dout_a : out unsigned (data_width-1 downto 0);
|
||||
dout_b : out unsigned (data_width-1 downto 0)
|
||||
);
|
||||
end reg_dual;
|
||||
|
||||
architecture Behavioral of reg_dual is
|
||||
|
||||
constant depth : integer := 2**addr_width;
|
||||
type mem_t is array (0 to depth-1) of unsigned (data_width-1 downto 0);
|
||||
|
||||
function mem_clear(depth : natural) return mem_t is
|
||||
variable result : mem_t;
|
||||
begin
|
||||
for i in 0 to depth-1 loop
|
||||
result(i) := (others => '0');
|
||||
end loop;
|
||||
return result;
|
||||
end mem_clear;
|
||||
|
||||
signal reg_mem : mem_t := mem_clear(depth);
|
||||
|
||||
begin
|
||||
|
||||
reg_in:
|
||||
process(clk_w)
|
||||
begin
|
||||
if rising_edge(clk_w) then
|
||||
if we = '1' and en = '1' then
|
||||
reg_mem(to_integer(wptr)) <= din;
|
||||
end if;
|
||||
end if;
|
||||
end process;
|
||||
|
||||
dout_a <= reg_mem(to_integer(rptr_a)) after 2 ns;
|
||||
dout_b <= reg_mem(to_integer(rptr_b)) after 2 ns;
|
||||
|
||||
end Behavioral;
|
||||
|
||||
@@ -0,0 +1,114 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
|
||||
-- This file: The shifter unit
|
||||
--
|
||||
-- Copyright (C) 2008 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
use work.mips_types.all;
|
||||
|
||||
entity shifter is
|
||||
Generic
|
||||
(
|
||||
data_width : integer := 8
|
||||
);
|
||||
Port
|
||||
(
|
||||
shift_ctrl : in shift_ctrl_t;
|
||||
din : in unsigned (data_width-1 downto 0);
|
||||
dout : out unsigned (data_width-1 downto 0)
|
||||
);
|
||||
end shifter;
|
||||
|
||||
architecture Behavioral of shifter is
|
||||
|
||||
subtype word_t is unsigned(data_width-1 downto 0);
|
||||
type word_array_t is array (0 to 5) of word_t;
|
||||
|
||||
signal rot_data : word_array_t;
|
||||
signal sa_rnd : unsigned (4 downto 0);
|
||||
signal fill : std_logic;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
function rot_stage(x : unsigned; en : std_logic; stage_num : natural) return unsigned is
|
||||
variable result : unsigned(x'range);
|
||||
constant sa : natural := 2**stage_num;
|
||||
begin
|
||||
if en = '1' then
|
||||
result := x(sa-1 downto 0) & x(x'left downto sa);
|
||||
else
|
||||
result := x;
|
||||
end if;
|
||||
return result;
|
||||
|
||||
end rot_stage;
|
||||
|
||||
function rot_fill(x : unsigned; fill : std_logic; shift_right : std_logic; sa : natural) return unsigned is
|
||||
variable result : unsigned(x'range) := (others => '0');
|
||||
variable j : integer;
|
||||
begin
|
||||
|
||||
if shift_right = '0' then
|
||||
for i in 0 to x'left loop
|
||||
if i >= sa then
|
||||
result(i) := x(i);
|
||||
else
|
||||
result(i) := fill;
|
||||
end if;
|
||||
end loop;
|
||||
else
|
||||
j := x'left;
|
||||
for i in 0 to x'left loop
|
||||
if i < sa then
|
||||
result(j) := fill;
|
||||
else
|
||||
result(j) := x(j);
|
||||
end if;
|
||||
j := j - 1;
|
||||
end loop;
|
||||
end if;
|
||||
return result;
|
||||
|
||||
end rot_fill;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
begin
|
||||
|
||||
rot_data(0) <= din;
|
||||
|
||||
gen_rotate_right:
|
||||
for stage in 0 to 4 generate
|
||||
begin
|
||||
rot_data(stage+1) <= rot_stage(rot_data(stage), sa_rnd(stage), stage);
|
||||
end generate;
|
||||
|
||||
sa_rnd <= shift_ctrl.shamt_rnd;
|
||||
fill <= shift_ctrl.shift_arith and din(data_width-1);
|
||||
dout <= rot_fill(rot_data(5), fill, shift_ctrl.shift_right, to_integer(shift_ctrl.shamt_nrm)) after 5 ns;
|
||||
-- dout <= rot_data(5);
|
||||
|
||||
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
end Behavioral;
|
||||
|
||||
@@ -0,0 +1,190 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
|
||||
-- This file: JIPS top file
|
||||
--
|
||||
-- Copyright (C) 2008 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
library work;
|
||||
use work.mips_types.all;
|
||||
|
||||
entity mips_top is
|
||||
Port
|
||||
(
|
||||
debug : out unsigned(1 downto 0);
|
||||
RST_I : in STD_LOGIC;
|
||||
CLK_I : in STD_LOGIC;
|
||||
ACK_I : in STD_LOGIC;
|
||||
SRDY_I : in STD_LOGIC;
|
||||
ADDR_O : out word_t;
|
||||
DAT_I : in word_t;
|
||||
DAT_O : out word_t;
|
||||
WE_O : out STD_LOGIC;
|
||||
SEL_O : out unsigned(3 downto 0);
|
||||
CYC_O : out STD_LOGIC;
|
||||
STB_O : out STD_LOGIC;
|
||||
MRDY_O : out STD_LOGIC;
|
||||
INT : in unsigned (5 downto 0)
|
||||
);
|
||||
|
||||
end mips_top;
|
||||
|
||||
architecture rtl of mips_top is
|
||||
|
||||
COMPONENT pipeline is
|
||||
Port
|
||||
(
|
||||
rst : in STD_LOGIC;
|
||||
clk : in STD_LOGIC;
|
||||
halt : in STD_LOGIC;
|
||||
int : in unsigned (5 downto 0);
|
||||
imem_err : in STD_LOGIC;
|
||||
imem_rdy : in STD_LOGIC;
|
||||
imem_en : out STD_LOGIC;
|
||||
imem_addr : out word_t;
|
||||
imem_data : in word_t;
|
||||
dmem_err : in STD_LOGIC;
|
||||
dmem_rdy : in STD_LOGIC;
|
||||
dmem_en : out STD_LOGIC;
|
||||
dmem_we : out STD_LOGIC;
|
||||
dmem_be : out unsigned(3 downto 0);
|
||||
dmem_addr : out word_t;
|
||||
dmem_din : in word_t;
|
||||
dmem_dout : out word_t
|
||||
);
|
||||
END COMPONENT;
|
||||
signal imem_err : std_logic;
|
||||
signal imem_rdy : std_logic;
|
||||
signal imem_en : std_logic;
|
||||
signal imem_addr : word_t;
|
||||
signal imem_din : word_t;
|
||||
signal dmem_err : std_logic;
|
||||
signal dmem_rdy : std_logic;
|
||||
signal dmem_en : std_logic;
|
||||
signal dmem_we : std_logic;
|
||||
signal dmem_addr : word_t;
|
||||
signal dmem_dout : word_t;
|
||||
signal dmem_din : word_t;
|
||||
signal dmem_be : unsigned(3 downto 0);
|
||||
|
||||
|
||||
COMPONENT biu
|
||||
GENERIC
|
||||
(
|
||||
icache_size : natural;
|
||||
dcache_size : natural
|
||||
);
|
||||
PORT
|
||||
(
|
||||
RST_I : in STD_LOGIC;
|
||||
CLK_I : in STD_LOGIC;
|
||||
ACK_I : in STD_LOGIC;
|
||||
SRDY_I : in STD_LOGIC;
|
||||
ADDR_O : out word_t;
|
||||
DAT_I : in word_t;
|
||||
DAT_O : out word_t;
|
||||
WE_O : out STD_LOGIC;
|
||||
SEL_O : out unsigned(3 downto 0);
|
||||
CYC_O : out STD_LOGIC;
|
||||
STB_O : out STD_LOGIC;
|
||||
MRDY_O : out STD_LOGIC;
|
||||
cpu_imem_err : out STD_LOGIC;
|
||||
cpu_imem_rdy : out STD_LOGIC;
|
||||
cpu_imem_en : in STD_LOGIC;
|
||||
cpu_imem_addr : in word_t;
|
||||
cpu_imem_din : out word_t;
|
||||
cpu_dmem_err : out STD_LOGIC;
|
||||
cpu_dmem_rdy : out STD_LOGIC;
|
||||
cpu_dmem_en : in STD_LOGIC;
|
||||
cpu_dmem_we : in STD_LOGIC;
|
||||
cpu_dmem_be : in unsigned(3 downto 0);
|
||||
cpu_dmem_dout : in word_t;
|
||||
cpu_dmem_din : out word_t;
|
||||
cpu_dmem_addr : in word_t
|
||||
);
|
||||
END COMPONENT;
|
||||
|
||||
begin
|
||||
|
||||
-------------------------------------------------------------------
|
||||
debug(0) <= imem_err;
|
||||
debug(1) <= dmem_err;
|
||||
|
||||
inst_pipeline: pipeline
|
||||
PORT MAP
|
||||
(
|
||||
rst => RST_I,
|
||||
clk => CLK_I,
|
||||
halt => '0',
|
||||
int => INT,
|
||||
imem_err => imem_err,
|
||||
imem_rdy => imem_rdy,
|
||||
imem_en => imem_en,
|
||||
imem_addr => imem_addr,
|
||||
imem_data => imem_din,
|
||||
dmem_err => dmem_err,
|
||||
dmem_rdy => dmem_rdy,
|
||||
dmem_en => dmem_en,
|
||||
dmem_we => dmem_we,
|
||||
dmem_be => dmem_be,
|
||||
dmem_addr => dmem_addr,
|
||||
dmem_din => dmem_din,
|
||||
dmem_dout => dmem_dout
|
||||
);
|
||||
|
||||
inst_biu: biu
|
||||
GENERIC MAP
|
||||
(
|
||||
icache_size => 4096, -- words
|
||||
dcache_size => 4096 -- words
|
||||
)
|
||||
PORT MAP
|
||||
(
|
||||
RST_I => RST_I,
|
||||
CLK_I => CLK_I,
|
||||
ACK_I => ACK_I,
|
||||
SRDY_I => SRDY_I,
|
||||
ADDR_O => ADDR_O,
|
||||
DAT_I => DAT_I,
|
||||
DAT_O => DAT_O,
|
||||
WE_O => WE_O,
|
||||
SEL_O => SEL_O,
|
||||
CYC_O => CYC_O,
|
||||
STB_O => STB_O,
|
||||
MRDY_O => MRDY_O,
|
||||
cpu_imem_err => imem_err,
|
||||
cpu_imem_rdy => imem_rdy,
|
||||
cpu_imem_en => imem_en,
|
||||
cpu_imem_addr => imem_addr,
|
||||
cpu_imem_din => imem_din,
|
||||
cpu_dmem_err => dmem_err,
|
||||
cpu_dmem_rdy => dmem_rdy,
|
||||
cpu_dmem_en => dmem_en,
|
||||
cpu_dmem_we => dmem_we,
|
||||
cpu_dmem_be => dmem_be,
|
||||
cpu_dmem_addr => dmem_addr,
|
||||
cpu_dmem_din => dmem_din,
|
||||
cpu_dmem_dout => dmem_dout
|
||||
);
|
||||
|
||||
end rtl;
|
||||
@@ -0,0 +1,619 @@
|
||||
--------------------------------------------------------------------------
|
||||
-- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
|
||||
-- This file: Types, constants and functions for JIPS
|
||||
--
|
||||
-- Copyright (C) 2008 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
library IEEE;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
use IEEE.numeric_std.ALL;
|
||||
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
package mips_types is
|
||||
|
||||
-- Revision of the CPU
|
||||
constant REVISION : integer := 1;
|
||||
constant WORD_WIDTH : integer := 32;
|
||||
|
||||
--Types
|
||||
subtype instr_name_t is string(1 to 12);
|
||||
type instr_name_array_t is array (0 to 63) of instr_name_t;
|
||||
subtype opcode_t is unsigned (5 downto 0);
|
||||
subtype word_t is unsigned (WORD_WIDTH-1 downto 0);
|
||||
subtype reg_ptr_t is unsigned (4 downto 0);
|
||||
subtype shamt_t is unsigned(4 downto 0);
|
||||
subtype sa_t is natural range 0 to 63;
|
||||
subtype func_t is unsigned(5 downto 0);
|
||||
|
||||
type opclass_t is (special, regimm, opcode);
|
||||
|
||||
type op_t is
|
||||
(
|
||||
nop,
|
||||
op_sll,
|
||||
op_srl,
|
||||
op_sra,
|
||||
op_sllv,
|
||||
op_srlv,
|
||||
op_srav,
|
||||
op_jr,
|
||||
op_jalr,
|
||||
op_syscall,
|
||||
op_break,
|
||||
op_mfhi,
|
||||
op_mthi,
|
||||
op_mflo,
|
||||
op_mtlo,
|
||||
op_mult,
|
||||
op_multu,
|
||||
op_div,
|
||||
op_divu,
|
||||
op_add,
|
||||
op_addu,
|
||||
op_sub,
|
||||
op_subu,
|
||||
op_and,
|
||||
op_or,
|
||||
op_xor,
|
||||
op_nor,
|
||||
op_slt,
|
||||
op_sltu,
|
||||
op_bltz,
|
||||
op_bgez,
|
||||
op_bltzal,
|
||||
op_bgezal,
|
||||
op_j,
|
||||
op_jal,
|
||||
op_beq,
|
||||
op_bne,
|
||||
op_blez,
|
||||
op_bgtz,
|
||||
op_addi,
|
||||
op_addiu,
|
||||
op_slti,
|
||||
op_sltiu,
|
||||
op_andi,
|
||||
op_ori,
|
||||
op_xori,
|
||||
op_lui,
|
||||
op_lb,
|
||||
op_lh,
|
||||
op_lwl,
|
||||
op_lw,
|
||||
op_lbu,
|
||||
op_lhu,
|
||||
op_lwr,
|
||||
op_sb,
|
||||
op_sh,
|
||||
op_swl,
|
||||
op_sw,
|
||||
op_swr,
|
||||
op_cop0,
|
||||
op_cop1,
|
||||
op_cop2,
|
||||
op_cop3,
|
||||
op_lwc1,
|
||||
op_lwc2,
|
||||
op_lwc3,
|
||||
op_swc1,
|
||||
op_swc2,
|
||||
op_swc3
|
||||
);
|
||||
|
||||
attribute ENUM_ENCODING : string;
|
||||
|
||||
type imm_src_t is (src_imm32, src_imm16, src_imm16_high);
|
||||
type sa_src_t is (sa_src_reg, sa_src_imm);
|
||||
type alu_src1_t is (alu_src_reg);
|
||||
type alu_src2_t is (alu_src_reg, alu_src_imm);
|
||||
type bc_src_t is (bc_eq_ne, bc_lez_gtz, bc_ltz_gez);
|
||||
type shift_opsel_t is (shift_sll, shift_srl, shift_sra);
|
||||
type wptr_src_t is (wptr_src_imm, wptr_src_const);
|
||||
|
||||
-- attribute ENUM_ENCODING of itype_t: type is "ONE-HOT";
|
||||
|
||||
type pc_t is record
|
||||
curr : word_t;
|
||||
last : word_t;
|
||||
nxt : word_t;
|
||||
pc_branch : word_t;
|
||||
is_branch : boolean;
|
||||
end record;
|
||||
|
||||
type alu_outsel_t is
|
||||
(
|
||||
alu_adder,
|
||||
alu_shift2,
|
||||
alu_and,
|
||||
alu_or,
|
||||
alu_xor,
|
||||
alu_nor,
|
||||
alu_ltu,
|
||||
alu_lts
|
||||
);
|
||||
|
||||
type alu_flags_t is record
|
||||
c : STD_LOGIC;
|
||||
uvf : STD_LOGIC;
|
||||
ovf : STD_LOGIC;
|
||||
ltu : STD_LOGIC;
|
||||
lts : STD_LOGIC;
|
||||
end record;
|
||||
|
||||
type bcu_flags_t is record
|
||||
eq : STD_LOGIC;
|
||||
ltz : STD_LOGIC;
|
||||
end record;
|
||||
|
||||
type event_t is record
|
||||
Int : unsigned(5 downto 0);
|
||||
data_load_err : STD_LOGIC;
|
||||
data_store_err : STD_LOGIC;
|
||||
inst_load_err : STD_LOGIC;
|
||||
inst_priv_addr : STD_LOGIC;
|
||||
alu_ovf : STD_LOGIC;
|
||||
alu_uvf : STD_LOGIC;
|
||||
syscall : STD_LOGIC;
|
||||
break : STD_LOGIC;
|
||||
illegal : STD_LOGIC;
|
||||
end record;
|
||||
|
||||
type exc_flags_t is record
|
||||
Int : STD_LOGIC;
|
||||
DAdEL : STD_LOGIC;
|
||||
DAdES : STD_LOGIC;
|
||||
IAdEL : STD_LOGIC;
|
||||
IAdEK : STD_LOGIC;
|
||||
Ov : STD_LOGIC;
|
||||
Sys : STD_LOGIC;
|
||||
Bp : STD_LOGIC;
|
||||
RI : STD_LOGIC;
|
||||
IBE : STD_LOGIC;
|
||||
DBE : STD_LOGIC;
|
||||
end record;
|
||||
|
||||
type except_t is record
|
||||
act : STD_LOGIC;
|
||||
epc : word_t;
|
||||
cause : word_t;
|
||||
end record;
|
||||
|
||||
type cop_ctrl_in_t is record
|
||||
bd_wb : STD_LOGIC;
|
||||
epc_mem : word_t;
|
||||
epc_wb : word_t;
|
||||
imem_addr : word_t;
|
||||
dmem_addr : word_t;
|
||||
exc_left : STD_LOGIC;
|
||||
end record;
|
||||
|
||||
type cop_ctrl_out_t is record
|
||||
RE : STD_LOGIC;
|
||||
ee : STD_LOGIC;
|
||||
ec : STD_LOGIC;
|
||||
exc_commit : STD_LOGIC;
|
||||
exc_pending : STD_LOGIC;
|
||||
exc_exit : STD_LOGIC;
|
||||
reg_write : STD_LOGIC;
|
||||
cop_read : STD_LOGIC;
|
||||
user_mode : STD_LOGIC;
|
||||
int : STD_LOGIC;
|
||||
exc_vec : word_t;
|
||||
end record;
|
||||
|
||||
type sdu_t is record
|
||||
ID_nop : STD_LOGIC;
|
||||
EX_nop : STD_LOGIC;
|
||||
MEM_nop : STD_LOGIC;
|
||||
WB_nop : STD_LOGIC;
|
||||
ID_stall : STD_LOGIC;
|
||||
EX_stall : STD_LOGIC;
|
||||
MEM_stall : STD_LOGIC;
|
||||
WB_stall : STD_LOGIC;
|
||||
end record;
|
||||
|
||||
type hdu_t is record
|
||||
alu_fwd_a_ex : boolean;
|
||||
alu_fwd_a_mem : boolean;
|
||||
alu_fwd_a_wb : boolean;
|
||||
alu_fwd_b_ex : boolean;
|
||||
alu_fwd_b_mem : boolean;
|
||||
alu_fwd_b_wb : boolean;
|
||||
end record;
|
||||
|
||||
type alu_ctrl_t is record
|
||||
outsel : alu_outsel_t;
|
||||
add : STD_LOGIC;
|
||||
shift_right : STD_LOGIC;
|
||||
shift_arith : STD_LOGIC;
|
||||
op1_src : alu_src1_t;
|
||||
op2_src : alu_src2_t;
|
||||
end record;
|
||||
|
||||
type shift_ctrl_t is record
|
||||
shamt_nrm : shamt_t;
|
||||
shamt_rnd : shamt_t;
|
||||
shift_right : STD_LOGIC;
|
||||
shift_arith : STD_LOGIC;
|
||||
end record;
|
||||
|
||||
type ctrl_lines_t is record
|
||||
branch : STD_LOGIC;
|
||||
jump_long : STD_LOGIC;
|
||||
jump : STD_LOGIC;
|
||||
bc_not : STD_LOGIC;
|
||||
bc_src : bc_src_t;
|
||||
imm_src : imm_src_t;
|
||||
alu : alu_ctrl_t;
|
||||
reg_write : STD_LOGIC;
|
||||
reg_link : STD_LOGIC;
|
||||
dmem_we : STD_LOGIC;
|
||||
dmem_en : STD_LOGIC;
|
||||
shamt2_srcsel : sa_src_t;
|
||||
wptr_srcsel : wptr_src_t;
|
||||
cop_instr_en : STD_LOGIC;
|
||||
shift_offset : unsigned(1 downto 0);
|
||||
shift_byp : STD_LOGIC;
|
||||
byte_en_byp : STD_LOGIC;
|
||||
sign_ext_byp : STD_LOGIC;
|
||||
word4_en : STD_LOGIC;
|
||||
word2_en : STD_LOGIC;
|
||||
align_left : STD_LOGIC;
|
||||
load_signed : STD_LOGIC;
|
||||
mul_access : STD_LOGIC;
|
||||
mul_hilo_we : STD_LOGIC;
|
||||
mul_mul_divn : STD_LOGIC;
|
||||
mul_start : STD_LOGIC;
|
||||
mul_s_un : STD_LOGIC;
|
||||
mul_hilo_sel : STD_LOGIC;
|
||||
exc_break : STD_LOGIC;
|
||||
exc_syscall : STD_LOGIC;
|
||||
exc_illegal : STD_LOGIC;
|
||||
except_en : STD_LOGIC;
|
||||
alu_exc_en : STD_LOGIC;
|
||||
end record;
|
||||
|
||||
type ID_t is record
|
||||
nop : STD_LOGIC;
|
||||
exc : std_logic;
|
||||
IR : word_t;
|
||||
op : op_t;
|
||||
pcn : word_t;
|
||||
epc : word_t;
|
||||
jimm32 : word_t;
|
||||
bimm18 : word_t;
|
||||
imm : word_t;
|
||||
shamt : shamt_t;
|
||||
ctrl : ctrl_lines_t;
|
||||
reg_write : STD_LOGIC;
|
||||
reg_a_rptr : reg_ptr_t;
|
||||
reg_b_rptr : reg_ptr_t;
|
||||
reg_a : word_t;
|
||||
reg_b : word_t;
|
||||
events : event_t;
|
||||
end record;
|
||||
|
||||
type EX_t is record
|
||||
nop : STD_LOGIC;
|
||||
exc : std_logic;
|
||||
IR : word_t;
|
||||
op : op_t;
|
||||
pcn : word_t;
|
||||
epc : word_t;
|
||||
reg_a : word_t;
|
||||
reg_b : word_t;
|
||||
ctrl : ctrl_lines_t;
|
||||
shift_ctrl : shift_ctrl_t;
|
||||
alu_op1 : word_t;
|
||||
alu_op2 : word_t;
|
||||
alu_op2_s : word_t;
|
||||
alu_flags : alu_flags_t;
|
||||
result : word_t;
|
||||
reg_write : STD_LOGIC;
|
||||
wreg_we : STD_LOGIC;
|
||||
reg_wptr : reg_ptr_t;
|
||||
reg_a_rptr : reg_ptr_t;
|
||||
reg_b_rptr : reg_ptr_t;
|
||||
va : word_t;
|
||||
pa_off : unsigned(1 downto 0);
|
||||
events_in : event_t;
|
||||
events : event_t;
|
||||
end record;
|
||||
|
||||
type MEM_t is record
|
||||
nop : STD_LOGIC;
|
||||
exc : std_logic;
|
||||
op : op_t;
|
||||
pcn : word_t;
|
||||
epc : word_t;
|
||||
ctrl : ctrl_lines_t;
|
||||
ex_result : word_t;
|
||||
reg_wptr : reg_ptr_t;
|
||||
wreg_we : STD_LOGIC;
|
||||
data : word_t;
|
||||
va : word_t;
|
||||
pa_off : unsigned(1 downto 0);
|
||||
events_in : event_t;
|
||||
events : event_t;
|
||||
end record;
|
||||
|
||||
type WB_t is record
|
||||
nop : STD_LOGIC;
|
||||
op : op_t;
|
||||
epc : word_t;
|
||||
reg_wptr : reg_ptr_t;
|
||||
wreg_we : STD_LOGIC;
|
||||
data : word_t;
|
||||
bd : STD_LOGIC;
|
||||
end record;
|
||||
|
||||
|
||||
type rom_special_t is array (0 to 2**func_t'length-1) of ctrl_lines_t;
|
||||
type rom_regimm_t is array (0 to 2**reg_ptr_t'length-1) of ctrl_lines_t;
|
||||
type rom_opcode_t is array (0 to 2**opcode_t'length-1) of ctrl_lines_t;
|
||||
|
||||
function store_shift(x : word_t; va, shift_off : unsigned(1 downto 0); bypass : std_logic) return word_t;
|
||||
function store_be(va : unsigned(1 downto 0); be_src, word2_en, word4_en, align_left, bypass : std_logic) return unsigned;
|
||||
function load_shift(x : word_t; va, shift_off : unsigned(1 downto 0); bypass : std_logic) return word_t;
|
||||
function load_be(va : unsigned(1 downto 0); align_left, bypass : std_logic) return unsigned;
|
||||
function load_sign_ext(x : word_t; bypass, signed, word2_en, word4_en : std_logic) return word_t;
|
||||
function events_clr return event_t;
|
||||
function event_is_active(e : event_t) return std_logic;
|
||||
function "or" (a, b : event_t) return event_t;
|
||||
|
||||
end mips_types;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
package body mips_types is
|
||||
|
||||
function store_shift(x : word_t; va, shift_off : unsigned(1 downto 0); bypass : std_logic) return word_t is
|
||||
variable stage1 : word_t;
|
||||
variable result : word_t;
|
||||
variable sa : unsigned(1 downto 0);
|
||||
begin
|
||||
|
||||
if bypass = '1' then
|
||||
sa := "00";
|
||||
else
|
||||
sa := va + shift_off;
|
||||
end if;
|
||||
|
||||
stage1 := x;
|
||||
if sa(0) = '1' then
|
||||
stage1 := x(23 downto 0) & x(31 downto 24);
|
||||
end if;
|
||||
result := stage1;
|
||||
if sa(1) = '1' then
|
||||
result := stage1(15 downto 0) & stage1(31 downto 16);
|
||||
end if;
|
||||
|
||||
return result;
|
||||
end store_shift;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
function store_be(va : unsigned(1 downto 0); be_src, word2_en, word4_en, align_left, bypass : std_logic) return unsigned is
|
||||
variable result : unsigned(3 downto 0);
|
||||
begin
|
||||
if bypass = '1' then
|
||||
result := (3 downto 0 => be_src);
|
||||
elsif word2_en = '1' then
|
||||
case va is
|
||||
when "00" | "01" =>
|
||||
result := "00" & be_src & be_src;
|
||||
when "10" | "11" =>
|
||||
result := be_src & be_src & "00";
|
||||
when others =>
|
||||
result := "0000";
|
||||
end case;
|
||||
elsif word4_en = '1' then
|
||||
case va is
|
||||
when "00" =>
|
||||
result := "000" & be_src;
|
||||
when "01" =>
|
||||
result := "00" & be_src & '0';
|
||||
when "10" =>
|
||||
result := '0' & be_src & "00";
|
||||
when "11" =>
|
||||
result := be_src & "000";
|
||||
when others =>
|
||||
result := "0000";
|
||||
end case;
|
||||
elsif align_left = '1' then
|
||||
case va is
|
||||
when "00" =>
|
||||
result := be_src & be_src & be_src & be_src;
|
||||
when "01" =>
|
||||
result := be_src & be_src & be_src & '0';
|
||||
when "10" =>
|
||||
result := be_src & be_src & "00";
|
||||
when "11" =>
|
||||
result := be_src & "000";
|
||||
when others =>
|
||||
result := "0000";
|
||||
end case;
|
||||
else
|
||||
case va is
|
||||
when "00" =>
|
||||
result := "000" & be_src;
|
||||
when "01" =>
|
||||
result := "00" & be_src & be_src;
|
||||
when "10" =>
|
||||
result := '0' & be_src & be_src & be_src;
|
||||
when "11" =>
|
||||
result := be_src & be_src & be_src & be_src;
|
||||
when others =>
|
||||
result := "0000";
|
||||
end case;
|
||||
end if;
|
||||
|
||||
return result;
|
||||
|
||||
end store_be;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
function load_shift(x : word_t; va, shift_off : unsigned(1 downto 0); bypass : std_logic) return word_t is
|
||||
variable stage1 : word_t;
|
||||
variable result : word_t;
|
||||
variable sa : unsigned(1 downto 0);
|
||||
|
||||
begin
|
||||
if bypass = '1' then
|
||||
sa := "00";
|
||||
else
|
||||
sa := va + shift_off;
|
||||
end if;
|
||||
|
||||
stage1 := x;
|
||||
if sa(0) = '1' then
|
||||
stage1 := x(7 downto 0) & x(31 downto 8);
|
||||
end if;
|
||||
result := stage1;
|
||||
if sa(1) = '1' then
|
||||
result := stage1(15 downto 0) & stage1(31 downto 16);
|
||||
end if;
|
||||
|
||||
return result;
|
||||
end load_shift;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
function load_be(va : unsigned(1 downto 0); align_left, bypass : std_logic) return unsigned is
|
||||
variable result : unsigned(3 downto 0);
|
||||
begin
|
||||
if bypass = '1' then
|
||||
result := (3 downto 0 => '1');
|
||||
elsif align_left = '1' then
|
||||
case va is
|
||||
when "00" =>
|
||||
result := "1000";
|
||||
when "01" =>
|
||||
result := "1100";
|
||||
when "10" =>
|
||||
result := "1110";
|
||||
when "11" =>
|
||||
result := "1111";
|
||||
when others =>
|
||||
result := "0000";
|
||||
end case;
|
||||
else
|
||||
case va is
|
||||
when "00" =>
|
||||
result := "1111";
|
||||
when "01" =>
|
||||
result := "0111";
|
||||
when "10" =>
|
||||
result := "0011";
|
||||
when "11" =>
|
||||
result := "0001";
|
||||
when others =>
|
||||
result := "0000";
|
||||
end case;
|
||||
end if;
|
||||
|
||||
return result;
|
||||
|
||||
end load_be;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
function load_sign_ext(x : word_t; bypass, signed, word2_en, word4_en : std_logic) return word_t is
|
||||
variable result : word_t;
|
||||
variable sign : std_logic;
|
||||
|
||||
begin
|
||||
if bypass = '1' then
|
||||
result := x;
|
||||
elsif word2_en = '1' then
|
||||
sign := signed and x(15);
|
||||
result := (31 downto 16 => sign) & x(15 downto 0);
|
||||
else
|
||||
sign := signed and x(7);
|
||||
result := (31 downto 8 => sign) & x(7 downto 0);
|
||||
end if;
|
||||
|
||||
return result;
|
||||
end load_sign_ext;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
function events_clr return event_t is
|
||||
variable result : event_t;
|
||||
begin
|
||||
result.Int := (others => '0');
|
||||
result.data_load_err := '0';
|
||||
result.data_store_err := '0';
|
||||
result.inst_load_err := '0';
|
||||
result.inst_priv_addr := '0';
|
||||
result.alu_ovf := '0';
|
||||
result.alu_uvf := '0';
|
||||
result.syscall := '0';
|
||||
result.break := '0';
|
||||
result.illegal := '0';
|
||||
|
||||
return result;
|
||||
|
||||
end events_clr;
|
||||
|
||||
function event_is_active(e : event_t) return std_logic is
|
||||
variable result : std_logic;
|
||||
begin
|
||||
result := '0';
|
||||
|
||||
for i in e.Int'range loop
|
||||
result := result or e.Int(i);
|
||||
end loop;
|
||||
|
||||
result := result or e.data_load_err;
|
||||
result := result or e.data_store_err;
|
||||
result := result or e.inst_load_err;
|
||||
result := result or e.inst_priv_addr;
|
||||
result := result or e.alu_ovf;
|
||||
result := result or e.alu_uvf;
|
||||
result := result or e.syscall;
|
||||
result := result or e.break;
|
||||
result := result or e.illegal;
|
||||
|
||||
return result;
|
||||
|
||||
end event_is_active;
|
||||
|
||||
function "or" (a, b : event_t) return event_t is
|
||||
variable result : event_t;
|
||||
begin
|
||||
for i in a.Int'range loop
|
||||
result.Int(i) := a.Int(i) or b.Int(i);
|
||||
end loop;
|
||||
result.data_load_err := a.data_load_err or b.data_load_err;
|
||||
result.data_store_err := a.data_store_err or b.data_store_err;
|
||||
result.inst_load_err := a.inst_load_err or b.inst_load_err;
|
||||
result.inst_priv_addr := a.inst_priv_addr or b.inst_priv_addr;
|
||||
result.alu_ovf := a.alu_ovf or b.alu_ovf;
|
||||
result.alu_uvf := a.alu_uvf or b.alu_uvf;
|
||||
result.syscall := a.syscall or b.syscall;
|
||||
result.break := a.break or b.break;
|
||||
result.illegal := a.illegal or b.illegal;
|
||||
|
||||
return result;
|
||||
|
||||
end "or";
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
end mips_types;
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
--------------------------------------------------------------------------
|
||||
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,320 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
|
||||
-- This file: The ROM file for use in your VHDL design
|
||||
--
|
||||
-- Copyright (C) 2008 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
|
||||
ENTITY rom IS
|
||||
Generic
|
||||
(
|
||||
addr_width : integer := 2;
|
||||
data_width : integer := 32
|
||||
);
|
||||
Port
|
||||
(
|
||||
clk : in STD_LOGIC;
|
||||
addr : in unsigned(addr_width-1 downto 0);
|
||||
dout : out unsigned(data_width-1 downto 0)
|
||||
);
|
||||
END rom;
|
||||
|
||||
ARCHITECTURE itest OF rom IS
|
||||
|
||||
subtype word_t is unsigned(data_width-1 downto 0);
|
||||
type word_array_t is array (0 to 2**addr_width-1) of word_t;
|
||||
|
||||
-- Assembled from itest.jsm
|
||||
constant word_array : word_array_t :=
|
||||
(
|
||||
X"3C1D7FFF", -- 00000000
|
||||
X"0C100014", -- 00000004
|
||||
X"37BDEFFC", -- 00000008
|
||||
X"24080002", -- 0000000C
|
||||
X"0107102A", -- 00000010
|
||||
X"ACC40000", -- 00000014
|
||||
X"1040000B", -- 00000018
|
||||
X"ACC50004", -- 0000001C
|
||||
X"24C60008", -- 00000020
|
||||
X"24E8FFFE", -- 00000024
|
||||
X"8CC2FFF8", -- 00000028
|
||||
X"8CC3FFFC", -- 0000002C
|
||||
X"2508FFFF", -- 00000030
|
||||
X"00431021", -- 00000034
|
||||
X"ACC20000", -- 00000038
|
||||
X"1500FFFA", -- 0000003C
|
||||
X"24C60004", -- 00000040
|
||||
X"00E04021", -- 00000044
|
||||
X"03E00008", -- 00000048
|
||||
X"01001021", -- 0000004C
|
||||
X"27BDFF78", -- 00000050
|
||||
X"3C021003", -- 00000054
|
||||
X"3C030001", -- 00000058
|
||||
X"AFB60078", -- 0000005C
|
||||
X"3456FFFC", -- 00000060
|
||||
X"3C02AAAA", -- 00000064
|
||||
X"AFB7007C", -- 00000068
|
||||
X"AFB50074", -- 0000006C
|
||||
X"AFB40070", -- 00000070
|
||||
X"AFB20068", -- 00000074
|
||||
X"AFB00060", -- 00000078
|
||||
X"AFBF0080", -- 0000007C
|
||||
X"AFB3006C", -- 00000080
|
||||
X"AFB10064", -- 00000084
|
||||
X"AEC00000", -- 00000088
|
||||
X"3450AAAA", -- 0000008C
|
||||
X"347786A0", -- 00000090
|
||||
X"27B20010", -- 00000094
|
||||
X"24150014", -- 00000098
|
||||
X"3474869F", -- 0000009C
|
||||
X"00009821", -- 000000A0
|
||||
X"00002021", -- 000000A4
|
||||
X"02401021", -- 000000A8
|
||||
X"24060013", -- 000000AC
|
||||
X"24C6FFFF", -- 000000B0
|
||||
X"AC500000", -- 000000B4
|
||||
X"04C1FFFD", -- 000000B8
|
||||
X"24420004", -- 000000BC
|
||||
X"02041026", -- 000000C0
|
||||
X"24910001", -- 000000C4
|
||||
X"24420001", -- 000000C8
|
||||
X"02202821", -- 000000CC
|
||||
X"27A60010", -- 000000D0
|
||||
X"24070014", -- 000000D4
|
||||
X"0C100003", -- 000000D8
|
||||
X"00028040", -- 000000DC
|
||||
X"24070002", -- 000000E0
|
||||
X"26450008", -- 000000E4
|
||||
X"0810003E", -- 000000E8
|
||||
X"24060011", -- 000000EC
|
||||
X"04C0000A", -- 000000F0
|
||||
X"00000000", -- 000000F4
|
||||
X"8CA20000", -- 000000F8
|
||||
X"8CA3FFFC", -- 000000FC
|
||||
X"8CA4FFF8", -- 00000100
|
||||
X"00431023", -- 00000104
|
||||
X"24C6FFFF", -- 00000108
|
||||
X"1482FFF8", -- 0000010C
|
||||
X"24A50004", -- 00000110
|
||||
X"04C1FFF8", -- 00000114
|
||||
X"24E70001", -- 00000118
|
||||
X"10F5000C", -- 0000011C
|
||||
X"00000000", -- 00000120
|
||||
X"0291102A", -- 00000124
|
||||
X"1040FFDF", -- 00000128
|
||||
X"02202021", -- 0000012C
|
||||
X"1677FFDB", -- 00000130
|
||||
X"00009821", -- 00000134
|
||||
X"8EC20000", -- 00000138
|
||||
X"00000000", -- 0000013C
|
||||
X"24420001", -- 00000140
|
||||
X"AEC20000", -- 00000144
|
||||
X"0810002A", -- 00000148
|
||||
X"00002021", -- 0000014C
|
||||
X"08100049", -- 00000150
|
||||
X"26730001", -- 00000154
|
||||
X"00000000", -- 00000158
|
||||
X"00000000", -- 0000015C
|
||||
X"00000000", -- 00000160
|
||||
X"00000000", -- 00000164
|
||||
X"00000000", -- 00000168
|
||||
X"00000000", -- 0000016C
|
||||
X"00000000", -- 00000170
|
||||
X"00000000", -- 00000174
|
||||
X"00000000", -- 00000178
|
||||
X"00000000", -- 0000017C
|
||||
X"00000000", -- 00000180
|
||||
X"00000000", -- 00000184
|
||||
X"00000000", -- 00000188
|
||||
X"00000000", -- 0000018C
|
||||
X"00000000", -- 00000190
|
||||
X"00000000", -- 00000194
|
||||
X"00000000", -- 00000198
|
||||
X"00000000", -- 0000019C
|
||||
X"00000000", -- 000001A0
|
||||
X"00000000", -- 000001A4
|
||||
X"00000000", -- 000001A8
|
||||
X"00000000", -- 000001AC
|
||||
X"00000000", -- 000001B0
|
||||
X"00000000", -- 000001B4
|
||||
X"00000000", -- 000001B8
|
||||
X"00000000", -- 000001BC
|
||||
X"00000000", -- 000001C0
|
||||
X"00000000", -- 000001C4
|
||||
X"00000000", -- 000001C8
|
||||
X"00000000", -- 000001CC
|
||||
X"00000000", -- 000001D0
|
||||
X"00000000", -- 000001D4
|
||||
X"00000000", -- 000001D8
|
||||
X"00000000", -- 000001DC
|
||||
X"00000000", -- 000001E0
|
||||
X"00000000", -- 000001E4
|
||||
X"00000000", -- 000001E8
|
||||
X"00000000", -- 000001EC
|
||||
X"00000000", -- 000001F0
|
||||
X"00000000", -- 000001F4
|
||||
X"00000000", -- 000001F8
|
||||
X"00000000", -- 000001FC
|
||||
X"00000000", -- 00000200
|
||||
X"00000000", -- 00000204
|
||||
X"00000000", -- 00000208
|
||||
X"00000000", -- 0000020C
|
||||
X"00000000", -- 00000210
|
||||
X"00000000", -- 00000214
|
||||
X"00000000", -- 00000218
|
||||
X"00000000", -- 0000021C
|
||||
X"00000000", -- 00000220
|
||||
X"00000000", -- 00000224
|
||||
X"00000000", -- 00000228
|
||||
X"00000000", -- 0000022C
|
||||
X"00000000", -- 00000230
|
||||
X"00000000", -- 00000234
|
||||
X"00000000", -- 00000238
|
||||
X"00000000", -- 0000023C
|
||||
X"00000000", -- 00000240
|
||||
X"00000000", -- 00000244
|
||||
X"00000000", -- 00000248
|
||||
X"00000000", -- 0000024C
|
||||
X"00000000", -- 00000250
|
||||
X"00000000", -- 00000254
|
||||
X"00000000", -- 00000258
|
||||
X"00000000", -- 0000025C
|
||||
X"00000000", -- 00000260
|
||||
X"00000000", -- 00000264
|
||||
X"00000000", -- 00000268
|
||||
X"00000000", -- 0000026C
|
||||
X"00000000", -- 00000270
|
||||
X"00000000", -- 00000274
|
||||
X"00000000", -- 00000278
|
||||
X"00000000", -- 0000027C
|
||||
X"00000000", -- 00000280
|
||||
X"00000000", -- 00000284
|
||||
X"00000000", -- 00000288
|
||||
X"00000000", -- 0000028C
|
||||
X"00000000", -- 00000290
|
||||
X"00000000", -- 00000294
|
||||
X"00000000", -- 00000298
|
||||
X"00000000", -- 0000029C
|
||||
X"00000000", -- 000002A0
|
||||
X"00000000", -- 000002A4
|
||||
X"00000000", -- 000002A8
|
||||
X"00000000", -- 000002AC
|
||||
X"00000000", -- 000002B0
|
||||
X"00000000", -- 000002B4
|
||||
X"00000000", -- 000002B8
|
||||
X"00000000", -- 000002BC
|
||||
X"00000000", -- 000002C0
|
||||
X"00000000", -- 000002C4
|
||||
X"00000000", -- 000002C8
|
||||
X"00000000", -- 000002CC
|
||||
X"00000000", -- 000002D0
|
||||
X"00000000", -- 000002D4
|
||||
X"00000000", -- 000002D8
|
||||
X"00000000", -- 000002DC
|
||||
X"00000000", -- 000002E0
|
||||
X"00000000", -- 000002E4
|
||||
X"00000000", -- 000002E8
|
||||
X"00000000", -- 000002EC
|
||||
X"00000000", -- 000002F0
|
||||
X"00000000", -- 000002F4
|
||||
X"00000000", -- 000002F8
|
||||
X"00000000", -- 000002FC
|
||||
X"00000000", -- 00000300
|
||||
X"00000000", -- 00000304
|
||||
X"00000000", -- 00000308
|
||||
X"00000000", -- 0000030C
|
||||
X"00000000", -- 00000310
|
||||
X"00000000", -- 00000314
|
||||
X"00000000", -- 00000318
|
||||
X"00000000", -- 0000031C
|
||||
X"00000000", -- 00000320
|
||||
X"00000000", -- 00000324
|
||||
X"00000000", -- 00000328
|
||||
X"00000000", -- 0000032C
|
||||
X"00000000", -- 00000330
|
||||
X"00000000", -- 00000334
|
||||
X"00000000", -- 00000338
|
||||
X"00000000", -- 0000033C
|
||||
X"00000000", -- 00000340
|
||||
X"00000000", -- 00000344
|
||||
X"00000000", -- 00000348
|
||||
X"00000000", -- 0000034C
|
||||
X"00000000", -- 00000350
|
||||
X"00000000", -- 00000354
|
||||
X"00000000", -- 00000358
|
||||
X"00000000", -- 0000035C
|
||||
X"00000000", -- 00000360
|
||||
X"00000000", -- 00000364
|
||||
X"00000000", -- 00000368
|
||||
X"00000000", -- 0000036C
|
||||
X"00000000", -- 00000370
|
||||
X"00000000", -- 00000374
|
||||
X"00000000", -- 00000378
|
||||
X"00000000", -- 0000037C
|
||||
X"00000000", -- 00000380
|
||||
X"00000000", -- 00000384
|
||||
X"00000000", -- 00000388
|
||||
X"00000000", -- 0000038C
|
||||
X"00000000", -- 00000390
|
||||
X"00000000", -- 00000394
|
||||
X"00000000", -- 00000398
|
||||
X"00000000", -- 0000039C
|
||||
X"00000000", -- 000003A0
|
||||
X"00000000", -- 000003A4
|
||||
X"00000000", -- 000003A8
|
||||
X"00000000", -- 000003AC
|
||||
X"00000000", -- 000003B0
|
||||
X"00000000", -- 000003B4
|
||||
X"00000000", -- 000003B8
|
||||
X"00000000", -- 000003BC
|
||||
X"00000000", -- 000003C0
|
||||
X"00000000", -- 000003C4
|
||||
X"00000000", -- 000003C8
|
||||
X"00000000", -- 000003CC
|
||||
X"00000000", -- 000003D0
|
||||
X"00000000", -- 000003D4
|
||||
X"00000000", -- 000003D8
|
||||
X"00000000", -- 000003DC
|
||||
X"00000000", -- 000003E0
|
||||
X"00000000", -- 000003E4
|
||||
X"00000000", -- 000003E8
|
||||
X"00000000", -- 000003EC
|
||||
X"00000000", -- 000003F0
|
||||
X"00000000", -- 000003F4
|
||||
X"00000000", -- 000003F8
|
||||
X"00000000" -- 000003FC
|
||||
);
|
||||
|
||||
begin
|
||||
|
||||
PROM_READ:
|
||||
process(clk)
|
||||
begin
|
||||
if rising_edge(clk) then
|
||||
dout <= word_array(to_integer(addr));
|
||||
end if;
|
||||
end process;
|
||||
|
||||
|
||||
end itest;
|
||||
@@ -0,0 +1,121 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The ROM file for use in your VHDL design
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
|
||||
ENTITY rom IS
|
||||
Generic
|
||||
(
|
||||
addr_width : integer := 2;
|
||||
data_width : integer := 32
|
||||
);
|
||||
Port
|
||||
(
|
||||
addr : in unsigned(addr_width-1 downto 0);
|
||||
dout : out unsigned(data_width-1 downto 0)
|
||||
);
|
||||
END rom;
|
||||
|
||||
ARCHITECTURE itest OF rom IS
|
||||
|
||||
subtype word_t is unsigned(data_width-1 downto 0);
|
||||
type word_array_t is array (0 to 2**addr_width-1) of word_t;
|
||||
|
||||
-- Assembled from itest.jsm
|
||||
constant word_array : word_array_t :=
|
||||
(
|
||||
X"08100001", -- [0x00400000] j 0x00400004 [main]
|
||||
X"3c011234", -- [0x00400004] lui $1, 4660
|
||||
X"34215678", -- [0x00400008] ori $1, $1, 22136
|
||||
X"3021f00f", -- [0x0040000c] andi $1, $1, -4081
|
||||
X"2021affc", -- [0x00400010] addi $1, $1, -20484
|
||||
X"2021ffff", -- [0x00400014] addi $1, $1, -1
|
||||
X"1c20fffe", -- [0x00400018] bgtz $1 -8 [loop-0x00400018]
|
||||
X"3c020000", -- [0x0040001c] lui $2, 0
|
||||
X"34420001", -- [0x00400020] ori $2, $2, 1
|
||||
X"3c010000", -- [0x00400024] lui $1, 0
|
||||
X"34210004", -- [0x00400028] ori $1, $1, 4
|
||||
X"00220822", -- [0x0040002c] sub $1, $1, $2
|
||||
X"1c20fffe", -- [0x00400030] bgtz $1 -8 [loop2-0x00400030]
|
||||
X"3c1f0040", -- [0x00400034] lui $31, 64
|
||||
X"03e00008", -- [0x00400038] jr $31
|
||||
X"00000000", -- [0x0040003c] nop
|
||||
X"00000000", -- [0x00400040] nop
|
||||
X"00000000", -- [0x00400044] nop
|
||||
X"00000000", -- [0x00400048] nop
|
||||
X"00000000", -- [0x0040004c] nop
|
||||
X"00000000", -- [0x00400050] nop
|
||||
X"00000000", -- [0x00400054] nop
|
||||
X"00000000", -- [0x00400058] nop
|
||||
X"00000000", -- [0x0040005c] nop
|
||||
X"00000000", -- [0x00400060] nop
|
||||
X"00000000", -- [0x00400064] nop
|
||||
X"00000000", -- [0x00400068] nop
|
||||
X"00000000", -- [0x0040006c] nop
|
||||
X"00000000", -- [0x00400070] nop
|
||||
X"00000000", -- [0x00400074] nop
|
||||
X"00000000", -- [0x00400078] nop
|
||||
X"00000000", -- [0x0040007c] nop
|
||||
X"00000000", -- [0x00400080] nop
|
||||
X"00000000", -- [0x00400084] nop
|
||||
X"00000000", -- [0x00400088] nop
|
||||
X"00000000", -- [0x0040008c] nop
|
||||
X"00000000", -- [0x00400090] nop
|
||||
X"00000000", -- [0x00400094] nop
|
||||
X"00000000", -- [0x00400098] nop
|
||||
X"00000000", -- [0x0040009c] nop
|
||||
X"00000000", -- [0x004000a0] nop
|
||||
X"00000000", -- [0x004000a4] nop
|
||||
X"00000000", -- [0x004000a8] nop
|
||||
X"00000000", -- [0x004000ac] nop
|
||||
X"00000000", -- [0x004000b0] nop
|
||||
X"00000000", -- [0x004000b4] nop
|
||||
X"00000000", -- [0x004000b8] nop
|
||||
X"00000000", -- [0x004000bc] nop
|
||||
X"00000000", -- [0x004000c0] nop
|
||||
X"00000000", -- [0x004000c4] nop
|
||||
X"00000000", -- [0x004000c8] nop
|
||||
X"00000000", -- [0x004000cc] nop
|
||||
X"00000000", -- [0x004000d0] nop
|
||||
X"00000000", -- [0x004000d4] nop
|
||||
X"00000000", -- [0x004000d8] nop
|
||||
X"00000000", -- [0x004000dc] nop
|
||||
X"00000000", -- [0x004000e0] nop
|
||||
X"00000000", -- [0x004000e4] nop
|
||||
X"00000000", -- [0x004000e8] nop
|
||||
X"00000000", -- [0x004000ec] nop
|
||||
X"00000000", -- [0x004000f0] nop
|
||||
X"00000000", -- [0x004000f4] nop
|
||||
X"00000000", -- [0x004000f8] nop
|
||||
X"00000000" -- [0x004000fc] nop
|
||||
);
|
||||
|
||||
begin
|
||||
|
||||
PROM_READ:
|
||||
dout <= word_array(to_integer(addr));
|
||||
|
||||
end itest;
|
||||
@@ -0,0 +1,73 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The ROM file for use in your VHDL design
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
|
||||
ENTITY rom IS
|
||||
Generic
|
||||
(
|
||||
addr_width : integer := 2;
|
||||
data_width : integer := 32
|
||||
);
|
||||
Port
|
||||
(
|
||||
addr : in unsigned(addr_width-1 downto 0);
|
||||
dout : out unsigned(data_width-1 downto 0)
|
||||
);
|
||||
END rom;
|
||||
|
||||
ARCHITECTURE itest OF rom IS
|
||||
|
||||
subtype word_t is unsigned(data_width-1 downto 0);
|
||||
type word_array_t is array (0 to 2**addr_width-1) of word_t;
|
||||
|
||||
-- Assembled from itest.jsm
|
||||
constant word_array : word_array_t :=
|
||||
(
|
||||
X"08100001", -- j 0x00400004 [main] ; 5: j main
|
||||
X"3c011234", -- lui $1, 4660 ; 7: lui $1, 0x1234
|
||||
X"34215678", -- ori $1, $1, 22136 ; 8: ori $1, $1, 0x5678
|
||||
X"3c035555", -- lui $3, 21845 ; 9: lui $3, 0x5555
|
||||
X"3463aaaa", -- ori $3, $3, -21846 ; 10: ori $3, $3, 0xAAAA
|
||||
X"3c021000", -- lui $2, 4096 ; 11: lui $2, 0x1000
|
||||
X"ac410000", -- sw $1, 0($2) ; 12: sw $1, 0($2)
|
||||
X"ac430004", -- sw $3, 4($2) ; 13: sw $3, 4($2)
|
||||
X"00000000", -- nop ; 14: sll $0, $0, 0
|
||||
X"ac400000", -- sw $0, 0($2) ; 15: sw $0, 0($2)
|
||||
X"ac400004", -- sw $0, 4($2) ; 16: sw $0, 4($2)
|
||||
X"8c410000", -- lw $1, 0($2) ; 17: lw $1, 0($2)
|
||||
X"8c430004", -- lw $3, 4($2) ; 18: lw $3, 4($2)
|
||||
X"00000000", -- nop ; 19: sll $0, $0, 0
|
||||
X"00000000", -- nop ; 20: sll $0, $0, 0
|
||||
X"08100001" -- j 0x00400004 [main] ; 21: j main
|
||||
);
|
||||
|
||||
begin
|
||||
|
||||
PROM_READ:
|
||||
dout <= word_array(to_integer(addr));
|
||||
|
||||
end itest;
|
||||
@@ -0,0 +1,122 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The ROM file for use in your VHDL design
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
|
||||
ENTITY rom IS
|
||||
Generic
|
||||
(
|
||||
addr_width : integer := 2;
|
||||
data_width : integer := 32
|
||||
);
|
||||
Port
|
||||
(
|
||||
addr : in unsigned(addr_width-1 downto 0);
|
||||
dout : out unsigned(data_width-1 downto 0)
|
||||
);
|
||||
END rom;
|
||||
|
||||
ARCHITECTURE itest OF rom IS
|
||||
|
||||
subtype word_t is unsigned(data_width-1 downto 0);
|
||||
type word_array_t is array (0 to 2**addr_width-1) of word_t;
|
||||
|
||||
-- Assembled from itest.jsm
|
||||
constant word_array : word_array_t :=
|
||||
(
|
||||
|
||||
X"08100001", -- [0x00400000] j 0x00400004 [main]
|
||||
X"3c011234", -- [0x00400004] lui $1, 4660
|
||||
X"34215a5a", -- [0x00400008] ori $1, $1, 23130
|
||||
X"00010840", -- [0x0040000c] sll $1, $1, 1
|
||||
X"00010900", -- [0x00400010] sll $1, $1, 4
|
||||
X"00010880", -- [0x00400014] sll $1, $1, 2
|
||||
X"00010840", -- [0x00400018] sll $1, $1, 1
|
||||
X"00010a00", -- [0x0040001c] sll $1, $1, 8
|
||||
X"00010882", -- [0x00400020] srl $1, $1, 2
|
||||
X"00010942", -- [0x00400024] srl $1, $1, 5
|
||||
X"00010842", -- [0x00400028] srl $1, $1, 1
|
||||
X"00010a02", -- [0x0040002c] srl $1, $1, 8
|
||||
X"3821ffff", -- [0x00400030] xori $1, $1, -1
|
||||
X"3c1f0040", -- [0x00400034] lui $31, 64
|
||||
X"03e00008", -- [0x00400038] jr $31
|
||||
X"003f0826", -- [0x0040003c] xor $1, $1, $31
|
||||
X"00000000", -- [0x00400040] nop
|
||||
X"00000000", -- [0x00400044] nop
|
||||
X"00000000", -- [0x00400048] nop
|
||||
X"00000000", -- [0x0040004c] nop
|
||||
X"00000000", -- [0x00400050] nop
|
||||
X"00000000", -- [0x00400054] nop
|
||||
X"00000000", -- [0x00400058] nop
|
||||
X"00000000", -- [0x0040005c] nop
|
||||
X"00000000", -- [0x00400060] nop
|
||||
X"00000000", -- [0x00400064] nop
|
||||
X"00000000", -- [0x00400068] nop
|
||||
X"00000000", -- [0x0040006c] nop
|
||||
X"00000000", -- [0x00400070] nop
|
||||
X"00000000", -- [0x00400074] nop
|
||||
X"00000000", -- [0x00400078] nop
|
||||
X"00000000", -- [0x0040007c] nop
|
||||
X"00000000", -- [0x00400080] nop
|
||||
X"00000000", -- [0x00400084] nop
|
||||
X"00000000", -- [0x00400088] nop
|
||||
X"00000000", -- [0x0040008c] nop
|
||||
X"00000000", -- [0x00400090] nop
|
||||
X"00000000", -- [0x00400094] nop
|
||||
X"00000000", -- [0x00400098] nop
|
||||
X"00000000", -- [0x0040009c] nop
|
||||
X"00000000", -- [0x004000a0] nop
|
||||
X"00000000", -- [0x004000a4] nop
|
||||
X"00000000", -- [0x004000a8] nop
|
||||
X"00000000", -- [0x004000ac] nop
|
||||
X"00000000", -- [0x004000b0] nop
|
||||
X"00000000", -- [0x004000b4] nop
|
||||
X"00000000", -- [0x004000b8]
|
||||
X"00000000", -- [0x004000bc]
|
||||
X"00000000", -- [0x004000c0]
|
||||
X"00000000", -- [0x004000c4]
|
||||
X"00000000", -- [0x004000c8]
|
||||
X"00000000", -- [0x004000cc]
|
||||
X"00000000", -- [0x004000d0]
|
||||
X"00000000", -- [0x004000d4]
|
||||
X"00000000", -- [0x004000d8]
|
||||
X"00000000", -- [0x004000dc]
|
||||
X"00000000", -- [0x004000e0]
|
||||
X"00000000", -- [0x004000e4]
|
||||
X"00000000", -- [0x004000e8]
|
||||
X"00000000", -- [0x004000ec]
|
||||
X"00000000", -- [0x004000f0]
|
||||
X"00000000", -- [0x004000f4]
|
||||
X"00000000", -- [0x004000f8]
|
||||
X"00000000" -- [0x004000fc]
|
||||
);
|
||||
|
||||
begin
|
||||
|
||||
PROM_READ:
|
||||
dout <= word_array(to_integer(addr));
|
||||
|
||||
end itest;
|
||||
@@ -0,0 +1,122 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The ROM file for use in your VHDL design
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
|
||||
ENTITY rom IS
|
||||
Generic
|
||||
(
|
||||
addr_width : integer := 2;
|
||||
data_width : integer := 32
|
||||
);
|
||||
Port
|
||||
(
|
||||
addr : in unsigned(addr_width-1 downto 0);
|
||||
dout : out unsigned(data_width-1 downto 0)
|
||||
);
|
||||
END rom;
|
||||
|
||||
ARCHITECTURE itest OF rom IS
|
||||
|
||||
subtype word_t is unsigned(data_width-1 downto 0);
|
||||
type word_array_t is array (0 to 2**addr_width-1) of word_t;
|
||||
|
||||
-- Assembled from itest.jsm
|
||||
constant word_array : word_array_t :=
|
||||
(
|
||||
|
||||
X"08100001", -- [0x00400000] j 0x00400004 [main] ; 5: j main
|
||||
X"00000000", -- [0x00400004] nop ; 7: sll $0, $0, 0
|
||||
X"3c011000", -- [0x00400008] lui $1, 4096 ; 8: lui $1, 0x1000
|
||||
X"20220000", -- [0x0040000c] addi $2, $1, 0 ; 9: addi $2, $1, 0
|
||||
X"3c071234", -- [0x00400010] lui $7, 4660 ; 10: lui $7, 0x1234
|
||||
X"3c050001", -- [0x00400014] lui $5, 1 ; 11: lui $5, 0x0001
|
||||
X"ac270000", -- [0x00400018] sw $7, 0($1) ; 12: sw $7, 0($1)
|
||||
X"8c430000", -- [0x0040001c] lw $3, 0($2) ; 13: lw $3, 0($2)
|
||||
X"00654020", -- [0x00400020] add $8, $3, $5 ; 14: add $8, $3, $5
|
||||
X"00654820", -- [0x00400024] add $9, $3, $5 ; 15: add $9, $3, $5
|
||||
X"00655020", -- [0x00400028] add $10, $3, $5 ; 16: add $10, $3, $5
|
||||
X"00655820", -- [0x0040002c] add $11, $3, $5 ; 17: add $11, $3, $5
|
||||
X"00000000", -- [0x00400030] nop ; 18: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400034] nop ; 19: sll $0, $0, 0
|
||||
X"08100001", -- [0x00400038] j 0x00400004 [main] ; 20: j main
|
||||
X"00000000", -- [0x0040003c] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400040] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400044] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400048] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x0040004c] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400050] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400054] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400058] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x0040005c] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400060] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400064] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400068] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x0040006c] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400070] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400074] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400078] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x0040007c] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400080] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400084] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400088] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x0040008c] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400090] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400094] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x00400098] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x0040009c] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000a0] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000a4] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000a8] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000ac] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000b0] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000b4] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000b8] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000bc] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000c0] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000c4] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000c8] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000cc] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000d0] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000d4] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000d8] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000dc] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000e0] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000e4] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000e8] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000ec] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000f0] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000f4] nop ; 21: sll $0, $0, 0
|
||||
X"00000000", -- [0x004000f8] nop ; 21: sll $0, $0, 0
|
||||
X"00000000" -- [0x004000fc] nop ; 21: sll $0, $0, 0
|
||||
);
|
||||
|
||||
begin
|
||||
|
||||
PROM_READ:
|
||||
dout <= word_array(to_integer(addr));
|
||||
|
||||
end itest;
|
||||
@@ -0,0 +1,122 @@
|
||||
-------------------------------------------------------------------------
|
||||
-- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
|
||||
-- This file: The ROM file for use in your VHDL design
|
||||
--
|
||||
-- Copyright (C) 2007 J. Ahrensfeld
|
||||
--
|
||||
-- This program is free software: you can redistribute it and/or modify
|
||||
-- it under the terms of the GNU General Public License as published by
|
||||
-- the Free Software Foundation, either version 3 of the License, or
|
||||
-- (at your option) any later version.
|
||||
--
|
||||
-- This program is distributed in the hope that it will be useful,
|
||||
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
-- GNU General Public License for more details.
|
||||
--
|
||||
-- You should have received a copy of the GNU General Public License
|
||||
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
--
|
||||
-- For questions and ideas, please contact the author at jens@jayfield.org
|
||||
--
|
||||
--------------------------------------------------------------------------
|
||||
|
||||
LIBRARY ieee;
|
||||
use IEEE.STD_LOGIC_1164.ALL;
|
||||
USE ieee.numeric_std.ALL;
|
||||
|
||||
|
||||
ENTITY rom IS
|
||||
Generic
|
||||
(
|
||||
addr_width : integer := 2;
|
||||
data_width : integer := 32
|
||||
);
|
||||
Port
|
||||
(
|
||||
addr : in unsigned(addr_width-1 downto 0);
|
||||
dout : out unsigned(data_width-1 downto 0)
|
||||
);
|
||||
END rom;
|
||||
|
||||
ARCHITECTURE itest OF rom IS
|
||||
|
||||
subtype word_t is unsigned(data_width-1 downto 0);
|
||||
type word_array_t is array (0 to 2**addr_width-1) of word_t;
|
||||
|
||||
-- Assembled from itest.jsm
|
||||
constant word_array : word_array_t :=
|
||||
(
|
||||
|
||||
X"08100001", -- [0x00400000] j 0x00400004 [main]
|
||||
X"3c018000", -- [0x00400004] lui $1, -32768
|
||||
X"3c020000", -- [0x00400008] lui $2, 0
|
||||
X"3c030000", -- [0x0040000c] lui $3, 0
|
||||
X"34420001", -- [0x00400010] ori $2, $2, 1
|
||||
X"34630003", -- [0x00400014] ori $3, $3, 3
|
||||
X"00010842", -- [0x00400018] srl $1, $1, 1
|
||||
X"00010840", -- [0x0040001c] sll $1, $1, 1
|
||||
X"00010843", -- [0x00400020] sra $1, $1, 1
|
||||
X"000108c3", -- [0x00400024] sra $1, $1, 3
|
||||
X"00612004", -- [0x00400028] sllv $4, $1, $3
|
||||
X"00412807", -- [0x0040002c] srav $5, $1, $2
|
||||
X"00613007", -- [0x00400030] srav $6, $1, $3
|
||||
X"3c1f0040", -- [0x00400034] lui $31, 64
|
||||
X"03e00008", -- [0x00400038] jr $31
|
||||
X"00000000", -- [0x0040003c] nop
|
||||
X"00000000", -- [0x00400040] nop
|
||||
X"00000000", -- [0x00400044] nop
|
||||
X"00000000", -- [0x00400048] nop
|
||||
X"00000000", -- [0x0040004c] nop
|
||||
X"00000000", -- [0x00400050] nop
|
||||
X"00000000", -- [0x00400054] nop
|
||||
X"00000000", -- [0x00400058] nop
|
||||
X"00000000", -- [0x0040005c] nop
|
||||
X"00000000", -- [0x00400060] nop
|
||||
X"00000000", -- [0x00400064] nop
|
||||
X"00000000", -- [0x00400068] nop
|
||||
X"00000000", -- [0x0040006c] nop
|
||||
X"00000000", -- [0x00400070] nop
|
||||
X"00000000", -- [0x00400074] nop
|
||||
X"00000000", -- [0x00400078] nop
|
||||
X"00000000", -- [0x0040007c] nop
|
||||
X"00000000", -- [0x00400080] nop
|
||||
X"00000000", -- [0x00400084] nop
|
||||
X"00000000", -- [0x00400088] nop
|
||||
X"00000000", -- [0x0040008c] nop
|
||||
X"00000000", -- [0x00400090] nop
|
||||
X"00000000", -- [0x00400094] nop
|
||||
X"00000000", -- [0x00400098] nop
|
||||
X"00000000", -- [0x0040009c] nop
|
||||
X"00000000", -- [0x004000a0] nop
|
||||
X"00000000", -- [0x004000a4] nop
|
||||
X"00000000", -- [0x004000a8] nop
|
||||
X"00000000", -- [0x004000ac] nop
|
||||
X"00000000", -- [0x004000b0] nop
|
||||
X"00000000", -- [0x004000b4] nop
|
||||
X"00000000", -- [0x004000b8] nop
|
||||
X"00000000", -- [0x004000bc] nop
|
||||
X"00000000", -- [0x004000c0] nop
|
||||
X"00000000", -- [0x004000c4] nop
|
||||
X"00000000", -- [0x004000c8] nop
|
||||
X"00000000", -- [0x004000cc] nop
|
||||
X"00000000", -- [0x004000d0] nop
|
||||
X"00000000", -- [0x004000d4] nop
|
||||
X"00000000", -- [0x004000d8] nop
|
||||
X"00000000", -- [0x004000dc] nop
|
||||
X"00000000", -- [0x004000e0] nop
|
||||
X"00000000", -- [0x004000e4] nop
|
||||
X"00000000", -- [0x004000e8] nop
|
||||
X"00000000", -- [0x004000ec] nop
|
||||
X"00000000", -- [0x004000f0] nop
|
||||
X"00000000", -- [0x004000f4] nop
|
||||
X"00000000", -- [0x004000f8] nop
|
||||
X"00000000" -- [0x004000fc] nop
|
||||
);
|
||||
|
||||
begin
|
||||
|
||||
PROM_READ:
|
||||
dout <= word_array(to_integer(addr));
|
||||
|
||||
end itest;
|
||||
Some files were not shown because too many files have changed in this diff Show More
Reference in New Issue
Block a user