This commit was manufactured by cvs2svn to create tag 'JCPU_R4'.

git-svn-id: http://moon:8086/svn/vhdl/tags/JCPU_R4@559 cc03376c-175c-47c8-b038-4cd826a8556b

lib/CPUs/JCpu/sim/tb_cpu.fdo

@@ -12,8 +12,8 @@ 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"
+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.wdo}
 view wave

lib/CPUs/JCpu/sim/tb_cpu_embedded.fdo

@@ -12,7 +12,7 @@ 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"
+vcom -explicit  -93 "../src/itest_irom.vhdl"
 vsim -t 1ps   -lib work tb_cpu_embedded
 do {tb_cpu_embedded.wdo}
 view wave

lib/CPUs/JCpu/src/core/chipreg.vhd

@@ -42,7 +42,7 @@ end chipreg;
 
 architecture Behavioral of chipreg is
 
-	signal reg_page_sel		: page_sel_t;
+	signal reg_bank_sel		: bank_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);
@@ -53,7 +53,7 @@ proc_assign_ctrl_lines:
 	process (clk)
 	begin
 		if rising_edge(clk) then
-			ctrl_out.page_sel	<= reg_page_sel;
+			ctrl_out.bank_sel	<= reg_bank_sel;
 			ctrl_out.int_ctrl	<= reg_int_ctrl;
 			ctrl_out.stk_high	<= reg_stk_high;
 			ctrl_out.cmem_high	<= reg_cmem_high;
@@ -66,21 +66,15 @@ proc_reg_write:
 		if rst = '1' then
 			reg_stk_high <= (others => '0');
 			reg_cmem_high <= (others => '0');
-			reg_page_sel <= (others => '0');
+			reg_bank_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);
+					reg_bank_sel(bank_sel_t'range)	<= din(bank_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" =>
@@ -99,11 +93,11 @@ proc_reg_read:
 			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;
+				dout <= (7 downto bank_sel_t'length => '0') & reg_bank_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;
+				dout <= "0000000" & reg_int_ctrl.enable;
 			when X"04" =>	-- Upper stack bits out
 				dout <= "0000" & reg_cmem_high;
 			when X"05" =>	-- Upper cmem bits out

lib/CPUs/JCpu/src/core/cpu.vhd

@@ -39,7 +39,6 @@ entity cpu is
 		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);
@@ -215,13 +214,12 @@ begin
 	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);
+	cmem_addr <= '1' & creg_ctrl_out.bank_sel & mem_addr(MIN(cmem_addr'length-creg_ctrl_out.bank_sel'length-1, mem_addr'length)-1 downto 0);
 
 --------------------------------------------------------------------
 mem_ctrl_lines:
@@ -368,7 +366,7 @@ mem_data_mux:
 	end process;
 
 mem_addr_mux:
-	process(ctrl.lines.daddr_src_sel, reg_a_dout, reg_b_dout, const_data, creg_ctrl_out.page_sel)
+	process(ctrl.lines.daddr_src_sel, reg_a_dout, reg_b_dout, const_data, creg_ctrl_out.bank_sel)
 	begin
 		case ctrl.lines.daddr_src_sel is
 		when reg_a => 

lib/CPUs/JCpu/src/core/cpu_pkg.vhd

@@ -34,9 +34,6 @@ package cpu_pkg is
 	-- 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;
 	
@@ -52,7 +49,7 @@ package cpu_pkg is
 	constant IMEM_DATA_WIDTH : integer := INST_OPCODE_WIDTH + DMEM_DATA_WIDTH + REG_SIZE_BITS;
 
 	-- Microcode ROM
-	constant MUCODE_ADDR_WIDTH : integer := 10;
+	constant MUCODE_ADDR_WIDTH : integer := 9;
 	
 	-- Stack depth (uses lower half of CHIPRAM)
 	constant STACK_SIZE_BITS : integer := CHIPRAM_SIZE_BITS-1;
@@ -75,7 +72,7 @@ package cpu_pkg is
 	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);
+	subtype bank_sel_t is unsigned (CHIPRAM_SIZE_BITS-DMEM_DATA_WIDTH-2 downto 0);
 	
 	type alu_op_t is
 	(
@@ -103,7 +100,6 @@ package cpu_pkg is
 
 	type cpu_status_t is record
 		alu			: alu_status_t;
-		xmem_wait	: STD_LOGIC;
 	end record;
 
 	type ctrl_lines_t is record
@@ -136,13 +132,10 @@ package cpu_pkg is
 	
 	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;
+		bank_sel		: bank_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);
@@ -337,12 +330,11 @@ package body cpu_pkg is
 
 	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;
+	variable ze, cy : STD_LOGIC;
 	
 	begin
 		ze			:= status.alu.zero;
 		cy			:= status.alu.carry;
-		xmem_wait	:= status.xmem_wait;
 		
 		result := ctrl_lines_default;
 		if iphase = 0 then
@@ -438,10 +430,6 @@ package body cpu_pkg is
 			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;
@@ -449,10 +437,6 @@ package body cpu_pkg is
 			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;
@@ -460,55 +444,33 @@ package body cpu_pkg is
 			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
+			elsif 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
+			elsif 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
+			elsif 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;
@@ -516,10 +478,6 @@ package body cpu_pkg is
 			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;
@@ -527,10 +485,6 @@ package body cpu_pkg is
 			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;
@@ -858,8 +812,6 @@ package body cpu_pkg is
 			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;
@@ -870,7 +822,7 @@ package body cpu_pkg is
 	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;
+		addr := status.alu.carry & status.alu.zero & to_unsigned(iphase, 1) & opcode;
 		return addr;
 		
 	end get_muromaddr;

lib/CPUs/JCpu/src/core/int_ctrl.vhd

@@ -48,13 +48,11 @@ 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
 
@@ -74,7 +72,6 @@ irg_ctrl_fsm:
 		pc_load <= '0';
 		stk_push <= '0';
 		stk_pop <= '0';
-
 		case int_state is
 		
 		when int_idle =>
@@ -121,46 +118,10 @@ 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;
+			int_request <= '0';
+			if ctrl_in.enable = '1' then
+				int_request <= int_in;
+			end if;	
 		end if;
 	end process;
 

lib/CPUs/JCpu/src/cpu_embedded.vhd

@@ -34,7 +34,6 @@ entity cpu_embedded is
 		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);
@@ -56,7 +55,6 @@ architecture rtl of cpu_embedded is
 		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);
@@ -87,7 +85,6 @@ inst_cpu: cpu
 		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,

lib/CPUs/JCpu/src/itest_irom.vhdl

@@ -26,25 +26,22 @@ use IEEE.STD_LOGIC_1164.ALL;
 USE ieee.numeric_std.ALL;
 
 library work;
-use work.types_pkg.all;
+use work.cpu_pkg.all;
 
 -- JASM_ROM_INSERT_HERE
 ENTITY irom IS
-	Generic 
+	Port
 	(
-		depth 	: integer := 4
-	);
-	Port (
 	clk			: in  STD_LOGIC;
 	ce			: in  STD_LOGIC;
-	addr		: in  addr_t;
-	dout		: out word_t
+	addr		: in  inst_addr_t;
+	dout		: out inst_t
 	);
 END irom;
 
 ARCHITECTURE itest OF irom IS 
 
-	type imem_rom_t is array (0 to depth-1) of word_t;
+	type imem_rom_t is array (0 to 1023) of inst_t;
 
 	-- Assembled from itest.jsm
 	constant imem_rom : imem_rom_t :=

lib/CPUs/JCpu/src/tb_cpu_embedded.vhd

@@ -41,7 +41,6 @@ ARCHITECTURE behavior OF tb_cpu_embedded IS
 		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);
@@ -58,7 +57,6 @@ ARCHITECTURE behavior OF tb_cpu_embedded IS
 	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;
@@ -77,7 +75,6 @@ uut: cpu_embedded
 		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,

lib/CPUs/JCpu/src/tb_cpu_itest.vhd

@@ -47,7 +47,6 @@ ARCHITECTURE behavior OF tb_cpu IS
 		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);
@@ -77,7 +76,6 @@ ARCHITECTURE behavior OF tb_cpu IS
 	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 => '-');
@@ -112,7 +110,6 @@ uut: cpu
 		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,
@@ -137,21 +134,6 @@ CLK_GEN: process
 		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;

lib/CPUs/MIPS/sim/compile_simprim.do

@@ -1,6 +0,0 @@
-vlib simprim
-
-vcom -93 -work simprim  F:/Xilinx9/vhdl/src/simprims/simprim_Vcomponents_mti.vhd
-vcom -93 -work simprim  F:/Xilinx9/vhdl/src/simprims/simprim_Vpackage_mti.vhd
-vcom -93 -work simprim  F:/Xilinx9/vhdl/src/simprims/simprim_SMODEL_mti.vhd
-vcom -93 -work simprim  F:/Xilinx9/vhdl/src/simprims/simprim_VITAL_mti.vhd

lib/CPUs/MIPS/sim/compile_unisim.do

@@ -1,6 +0,0 @@
-vlib unisim
-
-vcom -93 -work unisim  F:/Xilinx9/vhdl/src/unisims/unisim_vpkg.vhd
-vcom -93 -work unisim  F:/Xilinx9/vhdl/src/unisims/unisim_vcomp.vhd
-vcom -93 -work unisim  F:/Xilinx9/vhdl/src/unisims/unisim_smodel.vhd
-vcom -93 -work unisim  F:/Xilinx9/vhdl/src/unisims/unisim_vital.vhd

lib/CPUs/MIPS/sim/tb_mips_embedded.fdo

@@ -1,22 +0,0 @@
-## NOTE:  Do not edit this file.
-##
-vlib work
-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_bcu.vhd"
-vcom -explicit  -93 "../src/core/mips_pipeline.vhd"
-vcom -explicit  -93 "../src/core/mips_top.vhd"
-vcom -explicit  -93 "../src/ram.vhd"
-vcom -explicit  -93 "../asm/fibonacci.vhd"
-vcom -explicit  -93 "../src/mips_embedded.vhd"
-vcom -explicit  -93 "../src/tb_mips_embedded.vhd"
-vsim -t 1ps   -lib work tb_mips_embedded
-do {tb_mips_embedded.wdo}
-view wave
-view structure
-view signals
-run 20us

lib/CPUs/MIPS/sim/tb_mips_embedded.wdo

@@ -1,41 +0,0 @@
-onerror {resume}
-quietly WaveActivateNextPane {} 0
-add wave -noupdate -format Logic /tb_mips_embedded/rst
-add wave -noupdate -format Logic /tb_mips_embedded/clk
-add wave -noupdate -format Logic /tb_mips_embedded/uut/inst_mips_top/inst_pipeline/exception
-add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_embedded/uut/inst_mips_top/inst_pipeline/pc
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded/dout
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded/uut/inst_ram/sram
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded/uut/dmem_addr
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded/uut/dmem_din
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded/uut/dmem_dout
-add wave -noupdate -format Logic -radix hexadecimal /tb_mips_embedded/uut/dmem_re
-add wave -noupdate -format Logic -radix hexadecimal /tb_mips_embedded/uut/dmem_we
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded/uut/imem_addr
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded/uut/imem_din
-add wave -noupdate -format Logic /tb_mips_embedded/clk
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded/uut/inst_mips_top/inst_pipeline/id_stage
-add wave -noupdate -format Logic /tb_mips_embedded/clk
-add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_embedded/uut/inst_mips_top/inst_pipeline/ex_stage
-add wave -noupdate -format Logic /tb_mips_embedded/clk
-add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_embedded/uut/inst_mips_top/inst_pipeline/mem_stage
-add wave -noupdate -format Logic /tb_mips_embedded/clk
-add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_embedded/uut/inst_mips_top/inst_pipeline/wb_stage
-add wave -noupdate -format Logic /tb_mips_embedded/clk
-add wave -noupdate -format Literal /tb_mips_embedded/uut/inst_mips_top/inst_pipeline/hdu
-TreeUpdate [SetDefaultTree]
-WaveRestoreCursors {{Cursor 1} {624000 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 100
-configure wave -griddelta 40
-configure wave -timeline 1
-update
-WaveRestoreZoom {0 ps} {2520 ns}

lib/CPUs/MIPS/sim/tb_mips_embedded_syn.fdo

@@ -1,31 +0,0 @@
-## NOTE:  Do not edit this file.
-##
-vlib work
-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_bcu.vhd"
-vcom -explicit  -93 "../src/core/mips_pipeline.vhd"
-vcom -explicit  -93 "../src/core/mips_muldiv.vhd"
-vcom -explicit  -93 "../src/core/mips_cop.vhd"
-vcom -explicit  -93 "../src/core/mips_bui.vhd"
-vcom -explicit  -93 "../src/core/mips_top.vhd"
-vcom -explicit  -93 "../src/core/dcache.vhd"
-vcom -explicit  -93 "../asm/testbench.ROM.vhd"
-vcom -explicit  -93 "../src/mips_embedded.vhd"
-vcom -explicit  -93 "../src/mips_embedded_syn.vhd"
-vcom -explicit  -93 "../../../uart/bbfifo_16x8.vhd"
-vcom -explicit  -93 "../../../uart/kcuart_rx.vhd"
-vcom -explicit  -93 "../../../uart/kcuart_tx.vhd"
-vcom -explicit  -93 "../../../uart/uart_rx.vhd"
-vcom -explicit  -93 "../../../uart/uart_tx.vhd"
-vcom -explicit  -93 "../src/tb_mips_embedded_syn.vhd"
-vsim -t 1ps   -lib work tb_mips_embedded_syn
-do {tb_mips_embedded_syn.wdo}
-view wave
-view structure
-view signals
-run 100us

lib/CPUs/MIPS/sim/tb_mips_embedded_syn.tdo

@@ -1,13 +0,0 @@
-## NOTE:  Do not edit this file.
-##
-vlib work
-
-vcom -explicit  -93 "../syn/ise9/netgen/par/mips_embedded_syn_timesim.vhd"
-vcom -explicit  -93 "../src/tb_mips_embedded_syn.vhd"
-vsim -t 1ps -sdfmax "/uut=../syn/ise9/netgen/par/mips_embedded_syn_timesim.sdf"  -lib work tb_mips_embedded_syn
-do {tb_mips_embedded_syn.wdo}
-view wave
-#add wave *
-view structure
-view signals
-run 2400ns

lib/CPUs/MIPS/sim/tb_mips_embedded_syn.wdo

@@ -1,112 +0,0 @@
-onerror {resume}
-quietly WaveActivateNextPane {} 0
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/sys_rx
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/sys_tx
-add wave -noupdate -format Logic /tb_mips_embedded_syn/sys_rst_n_in
-add wave -noupdate -format Logic /tb_mips_embedded_syn/sys_clk_in
-add wave -noupdate -format Literal /tb_mips_embedded_syn/sys_led
-add wave -noupdate -format Literal /tb_mips_embedded_syn/sys_dip
-add wave -noupdate -format Literal /tb_mips_embedded_syn/sys_btn
-add wave -noupdate -format Literal /tb_mips_embedded_syn/sys_error
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/cpu_rst
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/cpu_run
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/reg_uart_rx
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/reg_uart_tx
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/reg_uart_ctrl
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/reg_uart_baud
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/uart_status_port
-add wave -noupdate -format Literal -radix decimal /tb_mips_embedded_syn/uut/inst_mips_embedded/cnt_usec
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/cnt_usec_en
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/cnt_sec
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/mem_rdy
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/mem_en
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/mem_re
-add wave -noupdate -format Literal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/mem_we
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/mem_addr
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/mem_din
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/mem_dout
-add wave -noupdate -format Literal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_bui/s
-add wave -noupdate -divider DMEM
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/clk
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/dmem_addr
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/dmem_din
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/dmem_dout
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/dmem_en
-add wave -noupdate -format Literal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/dmem_we
-add wave -noupdate -divider IMEM
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/clk
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/imem_addr
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/imem_din
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/imem_en
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/pc_run
-add wave -noupdate -divider PC
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/clk
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/pc
-add wave -noupdate -format Literal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/hdu
-add wave -noupdate -divider Stages
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/clk
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/clk
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/clk
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/halt
-add wave -noupdate -format Literal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_reg_dual_a/reg_mem
-add wave -noupdate -divider Cop
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/ir_valid
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/cop_pipe_id
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/cop_pipe_ex
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/cop_ex_en
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/ctrl_in
-add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/ctrl_out
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/exc_entered
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/din
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/dout
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/epc
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/cause
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/test_reg_we
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/test_reg
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/stat_reg_we
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/status
-add wave -noupdate -format Literal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/events
-add wave -noupdate -format Literal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/eflags
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/badvaddr
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/rst
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/exception
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/status_save
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/status_rest
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/exc_strobe
-add wave -noupdate -format Literal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_cop/ip
-add wave -noupdate -divider Stages
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/id_stage
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/clk
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/dmem_addr
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/dmem_din
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/dmem_dout
-add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/ex_stage
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/clk
-add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/mem_stage
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/clk
-add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/wb_stage
-add wave -noupdate -divider Muldiv
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_muldiv/clk
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_muldiv/dout
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_muldiv/result
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_muldiv/start
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_muldiv/busy
-add wave -noupdate -format Logic /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_muldiv/hilo_sel
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_muldiv/din_hi
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_embedded_syn/uut/inst_mips_embedded/inst_mips_top/inst_pipeline/inst_muldiv/din_lo
-TreeUpdate [SetDefaultTree]
-WaveRestoreCursors {{Cursor 1} {1121030000 ps} 0} {{Cursor 2} {1436367 ps} 0} {{Cursor 3} {1122030000 ps} 0}
-configure wave -namecolwidth 179
-configure wave -valuecolwidth 89
-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 {1351336 ps} {1583596 ps}

lib/CPUs/MIPS/sim/tb_mips_muldiv.fdo

@@ -1,15 +0,0 @@
-## 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 5000us

lib/CPUs/MIPS/sim/tb_mips_muldiv.ndo

@@ -1,19 +0,0 @@
-## NOTE: Do not edit this file.
-## Auto generated by Project Navigator for Post-Translate Simulation
-##
-vlib work
-## Compile Post-Translate Model
-vcom -explicit  -93 "../syn/eval_muldiv/netgen/translate/muldiv_translate.vhd"
-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/tb_mips_muldiv.vhd"
-
-vsim -t 1ps  -lib work tb_mips_muldiv
-#do {tb_mips_muldiv.udo}
-view wave
-add wave *
-view structure
-view signals
-run 1000ns
-## End

lib/CPUs/MIPS/sim/tb_mips_muldiv.sdo

@@ -1,19 +0,0 @@
-## NOTE: Do not edit this file.
-## Auto generated by Project Navigator for Post-Translate Simulation
-##
-vlib work
-## Compile Post-Translate Model
-vcom -explicit  -93 "../syn/eval_muldiv/netgen/synthesis/muldiv_synthesis.vhd"
-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/tb_mips_muldiv.vhd"
-
-vsim -t 1ps  -lib work tb_mips_muldiv
-do {tb_mips_muldiv.wdo}
-view wave
-#add wave *
-view structure
-view signals
-run 1000ns
-## End

lib/CPUs/MIPS/sim/tb_mips_muldiv.wdo

@@ -1,78 +0,0 @@
-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/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/uut/result
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/ref_hi
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_muldiv/ref_lo
-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} {4999822285 ps} 0} {{Cursor 2} {102205454 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 {102150244 ps} {102363615 ps}

lib/CPUs/MIPS/sim/tb_mips_top.fdo

@@ -1,22 +0,0 @@
-## 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_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_bcu.vhd"
-vcom -explicit  -93 "../src/core/mips_pipeline.vhd"
-vcom -explicit  -93 "../src/core/mips_top.vhd"
-vcom -explicit  -93 "../asm/fibonacci.vhd"
-vcom -explicit  -93 "../src/ram.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

lib/CPUs/MIPS/sim/tb_mips_top.mdo

@@ -1,18 +0,0 @@
-## NOTE:  Do not edit this file.
-##
-vlib work
-## Compile Post-Map Model
-vcom -explicit  -93 "../syn/ise9/netgen/map/mips_top_map.vhd"
-vsim -t 1ps -sdfmax "/mips_top=../syn/ise9/netgen/map/mips_top_map.sdf"  -lib work mips_top
-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/irom_hello.vhd"
-vcom -explicit  -93 "../src/tb_mips_top.vhd"
-vsim -t 1ps   -lib work tb_mips_top
-do {tb_mips_top.mwdo}
-view wave
-#add wave *
-view structure
-view signals
-run 2400ns

lib/CPUs/MIPS/sim/tb_mips_top.mwdo

@@ -1,31 +0,0 @@
-onerror {resume}
-quietly WaveActivateNextPane {} 0
-add wave -noupdate -format Logic /tb_mips_top/rst
-add wave -noupdate -format Logic /tb_mips_top/clk
-add wave -noupdate -format Logic /tb_mips_top/ce
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/irom_data
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/irom_addr
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/dmem_din
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/dmem_dout
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/dmem_addr
-add wave -noupdate -format Logic /tb_mips_top/dmem_we
-add wave -noupdate -format Logic /tb_mips_top/dmem_re
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/sram
-add wave -noupdate -format Literal /tb_mips_top/uut/inst_pipeline_ex_stage_alu_op2
-add wave -noupdate -format Literal /tb_mips_top/uut/inst_pipeline_ex_stage_alu_result
-TreeUpdate [SetDefaultTree]
-WaveRestoreCursors {{Cursor 1} {77481 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 100
-configure wave -griddelta 40
-configure wave -timeline 1
-update
-WaveRestoreZoom {0 ps} {729730 ps}

lib/CPUs/MIPS/sim/tb_mips_top.sdo

@@ -1,16 +0,0 @@
-## NOTE:  Do not edit this file.
-##
-vlib work
-vcom -explicit  -93 "../syn/ise9/netgen/synthesis/mips_top_synthesis.vhd"
-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/irom_hello.vhd"
-vcom -explicit  -93 "../src/tb_mips_top.vhd"
-vsim -t 1ps   -lib work tb_mips_top
-#do {tb_mips_top.wdo}
-view wave
-add wave *
-view structure
-view signals
-run 2400ns

lib/CPUs/MIPS/sim/tb_mips_top.wdo

@@ -1,51 +0,0 @@
-onerror {resume}
-quietly WaveActivateNextPane {} 0
-add wave -noupdate -format Logic /tb_mips_top/rst
-add wave -noupdate -format Logic /tb_mips_top/clk
-add wave -noupdate -format Logic /tb_mips_top/cpu_halt
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/irom_data
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/irom_addr
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/dmem_addr
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/dmem_din
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/dmem_dout
-add wave -noupdate -format Logic /tb_mips_top/dmem_re
-add wave -noupdate -format Logic /tb_mips_top/dmem_we
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/inst_ram/sram
-add wave -noupdate -divider ALU
-add wave -noupdate -format Literal /tb_mips_top/uut/inst_pipeline/hdu
-add wave -noupdate -format Logic /tb_mips_top/clk
-add wave -noupdate -divider PC
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/uut/inst_pipeline/pc
-add wave -noupdate -format Logic /tb_mips_top/uut/inst_pipeline/exception
-add wave -noupdate -format Logic /tb_mips_top/clk
-add wave -noupdate -format Logic /tb_mips_top/uut/inst_pipeline/stall
-add wave -noupdate -divider PC
-add wave -noupdate -format Logic /tb_mips_top/clk
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/uut/inst_pipeline/if_stage
-add wave -noupdate -format Logic /tb_mips_top/clk
-add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_top/uut/inst_pipeline/id_stage
-add wave -noupdate -format Logic /tb_mips_top/clk
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/dmem_din
-add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_top/uut/inst_pipeline/ex_stage
-add wave -noupdate -format Logic /tb_mips_top/clk
-add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_top/uut/inst_pipeline/mem_stage
-add wave -noupdate -format Logic /tb_mips_top/clk
-add wave -noupdate -format Literal -radix hexadecimal /tb_mips_top/dmem_din
-add wave -noupdate -format Literal -radix hexadecimal -expand /tb_mips_top/uut/inst_pipeline/wb_stage
-add wave -noupdate -format Logic /tb_mips_top/clk
-TreeUpdate [SetDefaultTree]
-WaveRestoreCursors {{Cursor 1} {0 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}

lib/CPUs/MIPS/sim/tb_mips_top_syn.mdo

@@ -1,17 +0,0 @@
-## NOTE:  Do not edit this file.
-##
-vlib work
-## Compile Post-Map Model
-vcom -explicit  -93 "../syn/ise9/netgen/map/mips_top_syn_map.vhd"
-vsim -t 1ps -sdfmax "/mips_top_syn=../syn/ise9/netgen/map/mips_top_syn_map.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

lib/CPUs/MIPS/sim/tb_mips_top_syn.tdo

@@ -1,17 +0,0 @@
-## 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

lib/CPUs/MIPS/sim/tb_mips_top_syn.wdo

@@ -1,31 +0,0 @@
-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}

lib/CPUs/MIPS/src/core/dcache.vhd

@@ -1,435 +0,0 @@
-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 := 2 + 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;
-		dirty	: 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.dirty	:= x(1);
-		result.tv_p		:= x(4 downto 2);
-		result.tag		:= x(tag_width+4 downto 5);
-		
-		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(1)										:= x.dirty;
-		result(4 downto 2)								:= x.tv_p;
-		result(tag_width+4 downto 5)					:= 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';
-		cache_entry_in.dirty	<= '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;

lib/CPUs/MIPS/src/core/icache.vhd

@@ -1,354 +0,0 @@
-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;

lib/CPUs/MIPS/src/core/mips_alu.vhd

@@ -1,184 +0,0 @@
---------------------------------------------------------------------------
--- 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;

lib/CPUs/MIPS/src/core/mips_bcu.vhd

@@ -1,52 +0,0 @@
---------------------------------------------------------------------------
--- 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;

lib/CPUs/MIPS/src/core/mips_bui.vhd

@@ -1,496 +0,0 @@
---------------------------------------------------------------------------
--- 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 bui is
-	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 bui;
-
-architecture behavior of bui is
-
-	COMPONENT icache
-	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 COMPONENT;
-
-	COMPONENT dcache
-	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 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	=> 2048,	-- 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	=> 2048,	-- 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_we		<= STB_O_dmem_wr when dmem_mem_wr_gnt = '1' else
--- 						   STB_O_dmem_rd when dmem_mem_rd_gnt = '1' else
--- 						   STB_O_dcache when dcache_mem_gnt = '1' else
--- 						   STB_O_icache when icache_mem_gnt = '1' else '0';
-						   
-
-	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;

lib/CPUs/MIPS/src/core/mips_cop.vhd

@@ -1,415 +0,0 @@
---------------------------------------------------------------------------
--- 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	:= X"DEADBEEF";
-
-			end case;	
-			dout	<= reg;
-		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;

lib/CPUs/MIPS/src/core/mips_idecode_rom.vhd

@@ -1,101 +0,0 @@
---------------------------------------------------------------------------
--- 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;

lib/CPUs/MIPS/src/core/mips_instr.vhd

@@ -1,997 +0,0 @@
---------------------------------------------------------------------------
--- 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;
-
---------------------------------------------------------------------------
---------------------------------------------------------------------------
-

lib/CPUs/MIPS/src/core/mips_muldiv.vhd

@@ -1,454 +0,0 @@
---------------------------------------------------------------------------
--- 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;

lib/CPUs/MIPS/src/core/mips_pipeline.vhd

@@ -1,918 +0,0 @@
---------------------------------------------------------------------------
--- 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;

lib/CPUs/MIPS/src/core/mips_reg.vhd

@@ -1,81 +0,0 @@
---------------------------------------------------------------------------
--- 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;
-

lib/CPUs/MIPS/src/core/mips_shifter.vhd

@@ -1,114 +0,0 @@
---------------------------------------------------------------------------
--- 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;
-

lib/CPUs/MIPS/src/core/mips_top.vhd

@@ -1,180 +0,0 @@
---------------------------------------------------------------------------
--- 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 bui
-	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_bui: bui
-	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;

lib/CPUs/MIPS/src/core/mips_types.vhd

@@ -1,619 +0,0 @@
---------------------------------------------------------------------------
--- 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;
-
---------------------------------------------------------------------------
---------------------------------------------------------------------------

lib/CPUs/MIPS/src/irom_hello.vhd

@@ -1,320 +0,0 @@
--------------------------------------------------------------------------
--- 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;

lib/CPUs/MIPS/src/irom_test1.vhd

@@ -1,121 +0,0 @@
--------------------------------------------------------------------------
--- 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;

lib/CPUs/MIPS/src/irom_test2.vhd

@@ -1,73 +0,0 @@
--------------------------------------------------------------------------
--- 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;

lib/CPUs/MIPS/src/irom_test3.vhd

@@ -1,122 +0,0 @@
--------------------------------------------------------------------------
--- 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;

lib/CPUs/MIPS/src/irom_test4.vhd

@@ -1,122 +0,0 @@
--------------------------------------------------------------------------
--- 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;

lib/CPUs/MIPS/src/irom_test5.vhd

@@ -1,122 +0,0 @@
--------------------------------------------------------------------------
--- 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;

lib/CPUs/MIPS/src/irom_test6.vhd

@@ -1,121 +0,0 @@
--------------------------------------------------------------------------
--- 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"3c080000", --	[0x00400004]	lui $8, 0                       ; 7: lui $8, 0
-		X"00000000", --	[0x00400008]	nop                             ; 8: sll $0, $0, 0	
-		X"0c100009", --	[0x0040000c]	jal 0x00400024 [subr1]          ; 9: jal subr1
-		X"3c010040", --	[0x00400010]	lui $1, 64 [subr2]              ; 10: la $2, subr2
-		X"34220030", --	[0x00400014]	ori $2, $1, 48 [subr2]
-		X"00407809", --	[0x00400018]	jalr $15, $2                    ; 11: jalr $15, $2
-		X"00000000", --	[0x0040001c]	nop                             ; 12: sll $0, $0, 0
-		X"08100002", --	[0x00400020]	j 0x00400008 [loop]             ; 13: j	loop
-		X"21080001", --	[0x00400024]	addi $8, $8, 1                  ; 15: addi $8, 1
-		X"00000000", --	[0x00400028]	nop                             ; 16: sll $0, $0, 0
-		X"03e00008", --	[0x0040002c]	jr $31                          ; 17: jr   $31
-		X"21080010", --	[0x00400030]	addi $8, $8, 16                 ; 18: addi $8, 16
-		X"00000000", --	[0x00400034]	nop                             ; 19: sll $0, $0, 0
-		X"01e00008", --	[0x00400038]	jr $15                          ; 20: jr   $15
-		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;

lib/CPUs/MIPS/src/irom_test_addsub.vhd

@@ -1,121 +0,0 @@
--------------------------------------------------------------------------
--- 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"3c011234", --	[0x00400000]	lui $1, 4660       
-		X"34225678", --	[0x00400004]	ori $2, $1, 22136
-		X"3c012345", --	[0x00400008]	lui $1, 9029       
-		X"34236789", --	[0x0040000c]	ori $3, $1, 26505
-		X"3c018765", --	[0x00400010]	lui $1, -30875     
-		X"34244321", --	[0x00400014]	ori $4, $1, 17185
-		X"3c019876", --	[0x00400018]	lui $1, -26506     
-		X"34255432", --	[0x0040001c]	ori $5, $1, 21554
-		X"00000000", --	[0x00400020]	nop                
-		X"00427823", --	[0x00400024]	subu $15, $2, $2   
-		X"00437823", --	[0x00400028]	subu $15, $2, $3   
-		X"00447823", --	[0x0040002c]	subu $15, $2, $4   
-		X"00457823", --	[0x00400030]	subu $15, $2, $5   
-		X"00627823", --	[0x00400034]	subu $15, $3, $2   
-		X"00637823", --	[0x00400038]	subu $15, $3, $3   
-		X"00647823", --	[0x0040003c]	subu $15, $3, $4   
-		X"00657823", --	[0x00400040]	subu $15, $3, $5   
-		X"00827823", --	[0x00400044]	subu $15, $4, $2   
-		X"00837823", --	[0x00400048]	subu $15, $4, $3   
-		X"00847823", --	[0x0040004c]	subu $15, $4, $4   
-		X"00857823", --	[0x00400050]	subu $15, $4, $5   
-		X"00a27823", --	[0x00400054]	subu $15, $5, $2   
-		X"00a37823", --	[0x00400058]	subu $15, $5, $3   
-		X"00a47823", --	[0x0040005c]	subu $15, $5, $4   
-		X"00a57823", --	[0x00400060]	subu $15, $5, $5   
-		X"00000000", --	[0x00400064]	nop                
-		X"00427822", --	[0x00400068]	sub $15, $2, $2    
-		X"00437822", --	[0x0040006c]	sub $15, $2, $3    
-		X"00447822", --	[0x00400070]	sub $15, $2, $4    
-		X"00457822", --	[0x00400074]	sub $15, $2, $5    
-		X"00627822", --	[0x00400078]	sub $15, $3, $2    
-		X"00637822", --	[0x0040007c]	sub $15, $3, $3    
-		X"00647822", --	[0x00400080]	sub $15, $3, $4    
-		X"00657822", --	[0x00400084]	sub $15, $3, $5    
-		X"00827822", --	[0x00400088]	sub $15, $4, $2    
-		X"00837822", --	[0x0040008c]	sub $15, $4, $3    
-		X"00847822", --	[0x00400090]	sub $15, $4, $4    
-		X"00857822", --	[0x00400094]	sub $15, $4, $5    
-		X"00a27822", --	[0x00400098]	sub $15, $5, $2    
-		X"00a37822", --	[0x0040009c]	sub $15, $5, $3    
-		X"00a47822", --	[0x004000a0]	sub $15, $5, $4    
-		X"00a57822", --	[0x004000a4]	sub $15, $5, $5    
-		X"00000000", --	[0x004000a8]	nop                
-		X"08104000", --	[0x004000ac]	j 0x00410000 [main]
-		X"00000000", --	[0x004000b0]	nop                
-		X"00000000", --	[0x004000b4]
-		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;

lib/CPUs/MIPS/src/irom_test_slt.vhd

@@ -1,121 +0,0 @@
--------------------------------------------------------------------------
--- 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"3c011234", --	[0x00400000]	lui $1, 4660                    
-		X"34225678", --	[0x00400004]	ori $2, $1, 22136
-		X"3c012345", --	[0x00400008]	lui $1, 9029                    
-		X"34236789", --	[0x0040000c]	ori $3, $1, 26505
-		X"3c018765", --	[0x00400010]	lui $1, -30875                  
-		X"34244321", --	[0x00400014]	ori $4, $1, 17185
-		X"3c019876", --	[0x00400018]	lui $1, -26506                  
-		X"34255432", --	[0x0040001c]	ori $5, $1, 21554
-		X"3c081000", --	[0x00400020]	lui $8, 4096                    
-		X"00000000", --	[0x00400024]	nop                             
-		X"0042782b", --	[0x00400028]	sltu $15, $2, $2                
-		X"0043782b", --	[0x0040002c]	sltu $15, $2, $3                
-		X"0044782b", --	[0x00400030]	sltu $15, $2, $4                
-		X"0045782b", --	[0x00400034]	sltu $15, $2, $5                
-		X"0062782b", --	[0x00400038]	sltu $15, $3, $2                
-		X"0063782b", --	[0x0040003c]	sltu $15, $3, $3                
-		X"0064782b", --	[0x00400040]	sltu $15, $3, $4                
-		X"0065782b", --	[0x00400044]	sltu $15, $3, $5                
-		X"0082782b", --	[0x00400048]	sltu $15, $4, $2                
-		X"0083782b", --	[0x0040004c]	sltu $15, $4, $3                
-		X"0084782b", --	[0x00400050]	sltu $15, $4, $4                
-		X"0085782b", --	[0x00400054]	sltu $15, $4, $5                
-		X"00a2782b", --	[0x00400058]	sltu $15, $5, $2                
-		X"00a3782b", --	[0x0040005c]	sltu $15, $5, $3                
-		X"00a4782b", --	[0x00400060]	sltu $15, $5, $4                
-		X"00a5782b", --	[0x00400064]	sltu $15, $5, $5                
-		X"00000000", --	[0x00400068]	nop                             
-		X"0042782a", --	[0x0040006c]	slt $15, $2, $2                 
-		X"0043782a", --	[0x00400070]	slt $15, $2, $3                 
-		X"0044782a", --	[0x00400074]	slt $15, $2, $4                 
-		X"0045782a", --	[0x00400078]	slt $15, $2, $5                 
-		X"0062782a", --	[0x0040007c]	slt $15, $3, $2                 
-		X"0063782a", --	[0x00400080]	slt $15, $3, $3                 
-		X"0064782a", --	[0x00400084]	slt $15, $3, $4                 
-		X"0065782a", --	[0x00400088]	slt $15, $3, $5                 
-		X"0082782a", --	[0x0040008c]	slt $15, $4, $2                 
-		X"0083782a", --	[0x00400090]	slt $15, $4, $3                 
-		X"0084782a", --	[0x00400094]	slt $15, $4, $4                 
-		X"0085782a", --	[0x00400098]	slt $15, $4, $5                 
-		X"00a2782a", --	[0x0040009c]	slt $15, $5, $2                 
-		X"00a3782a", --	[0x004000a0]	slt $15, $5, $3                 
-		X"00a4782a", --	[0x004000a4]	slt $15, $5, $4                 
-		X"00a5782a", --	[0x004000a8]	slt $15, $5, $5                 
-		X"00000000", --	[0x004000ac]	nop                             
-		X"08104000", --	[0x004000b0]	j 0x00410000 [main]             
-		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;

lib/CPUs/MIPS/src/irom_test_slti.vhd

@@ -1,121 +0,0 @@
--------------------------------------------------------------------------
--- 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"3c011234", --	[0x00400000]	lui $1, 4660                     
-		X"34225678", --	[0x00400004]	ori $2, $1, 22136
-		X"3c012345", --	[0x00400008]	lui $1, 9029                     
-		X"34236789", --	[0x0040000c]	ori $3, $1, 26505
-		X"3c018765", --	[0x00400010]	lui $1, -30875                   
-		X"34244321", --	[0x00400014]	ori $4, $1, 17185
-		X"3c019876", --	[0x00400018]	lui $1, -26506                   
-		X"34255432", --	[0x0040001c]	ori $5, $1, 21554
-		X"3c081000", --	[0x00400020]	lui $8, 4096                     
-		X"00000000", --	[0x00400024]	nop                              
-		X"2c4f1234", --	[0x00400028]	sltiu $15, $2, 4660              
-		X"2c4f2345", --	[0x0040002c]	sltiu $15, $2, 9029              
-		X"2c4fedcc", --	[0x00400030]	sltiu $15, $2, -4660             
-		X"2c4fdcbb", --	[0x00400034]	sltiu $15, $2, -9029             
-		X"2c6f1234", --	[0x00400038]	sltiu $15, $3, 4660              
-		X"2c6f2345", --	[0x0040003c]	sltiu $15, $3, 9029              
-		X"2c6fedcc", --	[0x00400040]	sltiu $15, $3, -4660             
-		X"2c6fdcbb", --	[0x00400044]	sltiu $15, $3, -9029             
-		X"2c8f1234", --	[0x00400048]	sltiu $15, $4, 4660              
-		X"2c8f2345", --	[0x0040004c]	sltiu $15, $4, 9029              
-		X"2c8fedcc", --	[0x00400050]	sltiu $15, $4, -4660             
-		X"2c8fdcbb", --	[0x00400054]	sltiu $15, $4, -9029             
-		X"2caf1234", --	[0x00400058]	sltiu $15, $5, 4660              
-		X"2caf2345", --	[0x0040005c]	sltiu $15, $5, 9029              
-		X"2cafedcc", --	[0x00400060]	sltiu $15, $5, -4660             
-		X"2cafdcbb", --	[0x00400064]	sltiu $15, $5, -9029             
-		X"00000000", --	[0x00400068]	nop                              
-		X"284f1234", --	[0x0040006c]	slti $15, $2, 4660               
-		X"284f2345", --	[0x00400070]	slti $15, $2, 9029               
-		X"284fedcc", --	[0x00400074]	slti $15, $2, -4660              
-		X"284fdcbb", --	[0x00400078]	slti $15, $2, -9029              
-		X"286f1234", --	[0x0040007c]	slti $15, $3, 4660               
-		X"286f2345", --	[0x00400080]	slti $15, $3, 9029               
-		X"286fedcc", --	[0x00400084]	slti $15, $3, -4660              
-		X"286fdcbb", --	[0x00400088]	slti $15, $3, -9029              
-		X"288f1234", --	[0x0040008c]	slti $15, $4, 4660               
-		X"288f2345", --	[0x00400090]	slti $15, $4, 9029               
-		X"288fedcc", --	[0x00400094]	slti $15, $4, -4660              
-		X"288fdcbb", --	[0x00400098]	slti $15, $4, -9029              
-		X"28af1234", --	[0x0040009c]	slti $15, $5, 4660               
-		X"28af2345", --	[0x004000a0]	slti $15, $5, 9029               
-		X"28afedcc", --	[0x004000a4]	slti $15, $5, -4660              
-		X"28afdcbb", --	[0x004000a8]	slti $15, $5, -9029              
-		X"00000000", --	[0x004000ac]	nop                              
-		X"08104000", --	[0x004000b0]	j 0x00410000 [main]              
-		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;

lib/CPUs/MIPS/src/irom_test_sub.vhd

@@ -1,121 +0,0 @@
--------------------------------------------------------------------------
--- 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"3c011234", --	[0x00400000]	lui $1, 4660       
-		X"34225678", --	[0x00400004]	ori $2, $1, 22136
-		X"3c012345", --	[0x00400008]	lui $1, 9029       
-		X"34236789", --	[0x0040000c]	ori $3, $1, 26505
-		X"3c018765", --	[0x00400010]	lui $1, -30875     
-		X"34244321", --	[0x00400014]	ori $4, $1, 17185
-		X"3c019876", --	[0x00400018]	lui $1, -26506     
-		X"34255432", --	[0x0040001c]	ori $5, $1, 21554
-		X"00000000", --	[0x00400020]	nop                
-		X"00427823", --	[0x00400024]	subu $15, $2, $2   
-		X"00437823", --	[0x00400028]	subu $15, $2, $3   
-		X"00447823", --	[0x0040002c]	subu $15, $2, $4   
-		X"00457823", --	[0x00400030]	subu $15, $2, $5   
-		X"00627823", --	[0x00400034]	subu $15, $3, $2   
-		X"00637823", --	[0x00400038]	subu $15, $3, $3   
-		X"00647823", --	[0x0040003c]	subu $15, $3, $4   
-		X"00657823", --	[0x00400040]	subu $15, $3, $5   
-		X"00827823", --	[0x00400044]	subu $15, $4, $2   
-		X"00837823", --	[0x00400048]	subu $15, $4, $3   
-		X"00847823", --	[0x0040004c]	subu $15, $4, $4   
-		X"00857823", --	[0x00400050]	subu $15, $4, $5   
-		X"00a27823", --	[0x00400054]	subu $15, $5, $2   
-		X"00a37823", --	[0x00400058]	subu $15, $5, $3   
-		X"00a47823", --	[0x0040005c]	subu $15, $5, $4   
-		X"00a57823", --	[0x00400060]	subu $15, $5, $5   
-		X"00000000", --	[0x00400064]	nop                
-		X"00427822", --	[0x00400068]	sub $15, $2, $2    
-		X"00437822", --	[0x0040006c]	sub $15, $2, $3    
-		X"00447822", --	[0x00400070]	sub $15, $2, $4    
-		X"00457822", --	[0x00400074]	sub $15, $2, $5    
-		X"00627822", --	[0x00400078]	sub $15, $3, $2    
-		X"00637822", --	[0x0040007c]	sub $15, $3, $3    
-		X"00647822", --	[0x00400080]	sub $15, $3, $4    
-		X"00657822", --	[0x00400084]	sub $15, $3, $5    
-		X"00827822", --	[0x00400088]	sub $15, $4, $2    
-		X"00837822", --	[0x0040008c]	sub $15, $4, $3    
-		X"00847822", --	[0x00400090]	sub $15, $4, $4    
-		X"00857822", --	[0x00400094]	sub $15, $4, $5    
-		X"00a27822", --	[0x00400098]	sub $15, $5, $2    
-		X"00a37822", --	[0x0040009c]	sub $15, $5, $3    
-		X"00a47822", --	[0x004000a0]	sub $15, $5, $4    
-		X"00a57822", --	[0x004000a4]	sub $15, $5, $5    
-		X"00000000", --	[0x004000a8]	nop                
-		X"08104000", --	[0x004000ac]	j 0x00410000 [main]
-		X"00000000", --	[0x004000b0]	nop                
-		X"00000000", --	[0x004000b4]
-		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;

lib/CPUs/MIPS/src/mips_embedded.vhd

@@ -1,332 +0,0 @@
--------------------------------------------------------------------------
--- 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;
-
-library work;
-use work.mips_types.all;
-
-entity mips_embedded is
-	Port 
-	(
-		rst			: in  STD_LOGIC;
-		clk			: in  STD_LOGIC;
-		halt		: in  STD_LOGIC;
-		int			: in  unsigned(5 downto 0);
-		rxd			: in  STD_LOGIC;
-		txd			: out STD_LOGIC;
-		dout		: out word_t
-	);
-end mips_embedded;
-
-architecture rtl of mips_embedded is
-
-	COMPONENT mips_top
-	Port 
-	(
-		rst			: in  STD_LOGIC;
-		clk			: in  STD_LOGIC;
-		int			: in  unsigned(5 downto 0);
-		mem_rdy		: in  STD_LOGIC;
-		mem_re		: out STD_LOGIC;
-		mem_en		: out STD_LOGIC;
-		mem_we		: out unsigned(3 downto 0);
-		mem_din		: in  word_t;
-		mem_dout	: out word_t;
-		mem_addr	: out word_t
-		
-	);
-	END COMPONENT;
-
-	signal mem_din		: word_t;
-	signal mem_dout 	: word_t;
-	signal mem_addr 	: word_t;
-	signal mem_re 		: std_logic;
-	signal mem_en 		: std_logic;
-	signal mem_we 		: unsigned(3 downto 0);
-	signal mem_rdy		: std_logic;
-	
-	subtype tick_usec_t	is natural range 0 to 99;
-	signal tick_usec		: tick_usec_t;
-	signal cnt_usec			: word_t;
-	signal cnt_sec			: word_t;
-	signal cnt_usec_preset	: word_t;
-	signal cnt_sec_preset	: word_t;
-	signal cnt_usec_en		: std_logic;
-	signal cnt_usec_we		: std_logic;
-	signal cnt_sec_en		: std_logic;
-	signal cnt_sec_we		: std_logic;
-	
-	COMPONENT uart_tx
-    Port
-    (
-		data_in				: in std_logic_vector(7 downto 0);
-		write_buffer		: in std_logic;
-		reset_buffer		: in std_logic;
-		en_16_x_baud		: in std_logic;
-		serial_out			: out std_logic;
-		buffer_full			: out std_logic;
-		buffer_half_full	: out std_logic;
-		clk					: in std_logic
-	);
-	END COMPONENT;
-
-	COMPONENT uart_rx
-	Port 
-	(
-		serial_in			: in std_logic;
-		data_out			: out std_logic_vector(7 downto 0);
-		read_buffer			: in std_logic;
-		reset_buffer		: in std_logic;
-		en_16_x_baud		: in std_logic;
-		buffer_data_present	: out std_logic;
-		buffer_full			: out std_logic;
-		buffer_half_full	: out std_logic;
-		clk					: in std_logic
-	);
-	END COMPONENT;
-
-	signal baud_count		: unsigned(7 downto 0);
-	signal en_16_x_baud		: std_logic;
-	signal reg_we_uart_tx	: std_logic;
-	signal tx_full			: std_logic;
-	signal tx_half_full		: std_logic;
-	signal reg_uart_tx		: unsigned(7 downto 0);
-	signal reg_re_uart_rx	: std_logic;
-	signal reg_uart_rx		: std_logic_vector(7 downto 0);
-	signal rx_data_present	: std_logic;
-	signal rx_full			: std_logic;
-	signal rx_half_full		: std_logic;
-	signal uart_status_port	: unsigned(7 downto 0);
-	signal reg_uart_ctrl	: unsigned(7 downto 0);
-	signal reg_uart_baud	: unsigned(7 downto 0);
-
-begin
-
-registers_write: 
-	process(clk)
-	begin
-		if rising_edge(clk) then
-			reg_we_uart_tx	<= '0';
-			cnt_usec_we		<= '0';
-			cnt_sec_we		<= '0';
-			if rst = '1' then
-				dout			<= (others => '0');
-				reg_uart_baud	<= to_unsigned(53, 8);
-				reg_uart_ctrl	<= to_unsigned(0, 8);
-			elsif mem_en = '1' then
-				case mem_addr(5 downto 2) is
-				
-				when "0000" =>
-					if mem_we(0) = '1' then
-						dout(7 downto 0) <= mem_dout(7 downto 0);
-					end if;	
-					if mem_we(1) = '1' then
-						dout(15 downto 8) <= mem_dout(15 downto 8);
-					end if;	
-					if mem_we(2) = '1' then
-						dout(23 downto 16) <= mem_dout(23 downto 16);
-					end if;	
-					if mem_we(3) = '1' then
-						dout(31 downto 24) <= mem_dout(31 downto 24);
-					end if;	
-					
-				when "0001" =>
-					if mem_we(0) = '1' then
-						reg_we_uart_tx	<= '1';
-						reg_uart_tx <= mem_dout(7 downto 0);
-					end if;	
-					
-				when "0010" =>
-					if mem_we(0) = '1' then
-						reg_uart_ctrl	<= mem_dout(7 downto 0);
-					end if;	
-					if mem_we(1) = '1' then
-						reg_uart_baud	<= mem_dout(15 downto 8);
-					end if;	
-
-				when "0100" =>
-					if mem_we(3) = '1' then
-						cnt_usec_we		<= '1';
-						cnt_usec_preset	<= mem_dout;
-					end if;	
-
-				when "0101" =>
-					if mem_we(3) = '1' then
-						cnt_sec_we		<= '1';
-						cnt_sec_preset	<= mem_dout;
-					end if;	
-
-				when others => null;
-				end case;
-			end if;	
-		end if;	
-	end process;
-	
-registers_read: 
-	process(clk)
-	begin
-		if rising_edge(clk) then
-			reg_re_uart_rx	<= '0';
-			if mem_en = '1' then
-				mem_din			<= (others => '0');
-				case mem_addr(5 downto 2) is
-
-				when "0000" => null;
-
-				when "0001" =>
-					reg_re_uart_rx			<= '1';
-					mem_din(7 downto 0)		<= unsigned(reg_uart_rx);
-
-				when "0010" =>
-					mem_din(7 downto 0)		<= uart_status_port;
-					mem_din(15 downto 8)	<= reg_uart_baud;
-
-				when "0100" =>
-					mem_din					<= cnt_usec;
-
-				when "0101" =>
-					mem_din					<= cnt_sec;
-
-				when others => null;
-				end case;
-			end if;
-		end if;	
-	end process;
-
-	mem_rdy <= not halt;
-
-inst_mips_top: mips_top
-	PORT MAP
-	(
-		rst				=> rst,
-		clk				=> clk,
-		int				=> int,
-		mem_rdy			=> mem_rdy,
-		mem_en			=> mem_en,
-		mem_we			=> mem_we,
-		mem_din			=> mem_din,
-		mem_dout		=> mem_dout,
-		mem_addr		=> mem_addr
-	);
-
-inst_uart_tx: uart_tx 
-	port map
-	(
-		data_in				=> std_logic_vector(reg_uart_tx), 
-		write_buffer		=> reg_we_uart_tx,
-		reset_buffer		=> rst,
-		en_16_x_baud		=> en_16_x_baud,
-		serial_out			=> txd,
-		buffer_full			=> tx_full,
-		buffer_half_full	=> tx_half_full,
-		clk					=> clk
-	);
-	
-inst_uart_rx: uart_rx
-	port map
-	(
-		serial_in			=> rxd,
-		data_out			=> reg_uart_rx,
-		read_buffer			=> reg_re_uart_rx,
-		reset_buffer		=> rst,
-		en_16_x_baud		=> en_16_x_baud,
-		buffer_data_present => rx_data_present,
-		buffer_full			=> rx_full,
-		buffer_half_full	=> rx_half_full,
-		clk					=> clk
-	);  
-
-	uart_status_port <= (7 downto 5 => '0') & rx_data_present & rx_full & rx_half_full & tx_full & tx_half_full;
-
-tick_usec_timer:
-	process(clk)
-	begin
-		if clk'event and clk='1' then
-			cnt_usec_en		<= '0';
-			if rst = '1' then
-				tick_usec	<= 0;
-				cnt_usec_en	<= '0';
-			elsif tick_usec = tick_usec_t'high then
-				tick_usec		<= 0;
-				cnt_usec_en		<= '1';
-			else
-				tick_usec		<= tick_usec + 1;
-			end if;
-		end if;
-	end process;
-
-cnt_usec_timer:
-	process(clk)
-	begin
-		if clk'event and clk='1' then
-			cnt_sec_en		<= '0';
-			if rst = '1' then
-				cnt_usec	<= (others => '0');
-				cnt_sec_en	<= '0';
-			elsif cnt_usec_we = '1' then
-				cnt_usec		<= cnt_usec_preset;
-			elsif cnt_usec_en = '1' then
-				if cnt_usec = to_unsigned(1E6 - 1, word_t'length) then
-					cnt_usec		<= (others => '0');
-					cnt_sec_en		<= '1';
-				else
-					cnt_usec		<= cnt_usec + 1;
-				end if;
-			end if;	
-		end if;
-	end process;
-
-cnt_sec_timer:
-	process(clk)
-	begin
-		if clk'event and clk='1' then
-			if rst = '1' then
-				cnt_sec		<= (others => '0');
-			elsif cnt_sec_we = '1' then
-				cnt_sec		<= cnt_sec_preset;
-			elsif cnt_sec_en = '1' then
-				cnt_sec		<= cnt_sec + 1;
-			end if;	
-		end if;
-	end process;
-
-baud_timer:
-	process(clk)
-	begin
-		if clk'event and clk='1' then
-			if rst = '1' then
-				baud_count <= (others => '0');
-			elsif baud_count = reg_uart_baud then
-				baud_count <= (others => '0');
-				en_16_x_baud <= '1';
-			else
-				baud_count <= baud_count + 1;
-				en_16_x_baud <= '0';
-			end if;
-		end if;
-	end process;
-
-end rtl;

lib/CPUs/MIPS/src/mips_embedded_syn.vhd

@@ -1,137 +0,0 @@
---------------------------------------------------------------------------
--- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
--- This file: JIPS 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;
-
-library work;
-use work.mips_types.all;
-
-entity mips_embedded_syn is
-	Port
-	(
-		sys_rst_n_in		: in  STD_LOGIC;
-		sys_clk_in			: in  STD_LOGIC;
-		sys_dip				: in  STD_LOGIC_VECTOR (7 downto 0);
-		sys_btn				: in  STD_LOGIC_VECTOR (8 downto 0);
-		sys_led				: out STD_LOGIC_VECTOR (7 downto 0);
-		sys_rx				: in  STD_LOGIC;
-		sys_tx				: out STD_LOGIC;
-		sys_error			: out STD_LOGIC_VECTOR (1 downto 0)
-	);
-	
-end mips_embedded_syn;
-
-architecture struct of mips_embedded_syn is
-
-	COMPONENT mips_embedded
-	Port 
-	(
-		rst			: in  STD_LOGIC;
-		clk			: in  STD_LOGIC;
-		halt		: in  STD_LOGIC;
-		int			: in  unsigned(5 downto 0);
-		rxd			: in  STD_LOGIC;
-		txd			: out STD_LOGIC;
-		dout		: out word_t
-	);
-	END COMPONENT;
-
-	signal dout			: word_t;
-	signal rst			: STD_LOGIC;
-	signal clk			: STD_LOGIC;
-	signal halt			: STD_LOGIC;
-	signal int			: unsigned(5 downto 0);
-	signal btn_r		: unsigned (8 downto 0);
-	signal dip_r		: unsigned (7 downto 0);
-
-begin
-
--------------------------------------------------------------------
-inst_mips_embedded: mips_embedded
-	PORT MAP
-	(
-		rst				=> rst,
-		clk				=> clk,
-		halt			=> halt,
-		int				=> int,
-		rxd				=> sys_rx,
-		txd				=> sys_tx,
-		dout			=> dout
-	);
-
-	clk		<= sys_clk_in;
-	rst		<= not sys_rst_n_in;
-
-ERR_LED_reg:
-	process(rst, clk)
-	begin
-		if rst = '1' then
-			sys_error <= (others => '1');
-		elsif rising_edge(clk) then
-			sys_error <= STD_LOGIC_VECTOR(dout(31 downto 30));
-		end if;
-	end process;
-
-LED_reg:
-	process(rst, clk)
-	begin
-		if rst = '1' then
-			sys_led <= (others => '0');
-		elsif rising_edge(clk) then
-			sys_led <= STD_LOGIC_VECTOR(dout(7 downto 0));
-		end if;
-	end process;
-
-DIP_reg:
-	process(rst, clk)
-	begin
-		if rst = '1' then
-			dip_r <= (others => '0');
-		elsif rising_edge(clk) then
-			dip_r <= unsigned(sys_dip);
-		end if;
-	end process;
-
-BTN_reg:
-	process(rst, clk)
-	begin
-		if rst = '1' then
-			btn_r <= (others => '0');
-		elsif rising_edge(clk) then
-			btn_r <= unsigned(sys_btn);
-		end if;
-	end process;
-
-	halt <= btn_r(4) after 6.5 ns;
-	int(0)	<= dip_r(0) and btn_r(3) after 1 ns;
-	int(1)	<= dip_r(1) and btn_r(3) after 1 ns;
-	int(2)	<= dip_r(2) and btn_r(3) after 1 ns;
-	int(3)	<= dip_r(3) and btn_r(3) after 1 ns;
-	int(4)	<= dip_r(4) and btn_r(3) after 1 ns;
-	int(5)	<= dip_r(5) and btn_r(3) after 1 ns;
-	
--------------------------------------------------------------------
-	
-end struct;

lib/CPUs/MIPS/src/ram.vhd

@@ -1,115 +0,0 @@
--------------------------------------------------------------------------
--- 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 ram IS
-	Generic 
-	(
-		word_addr_width 	: integer := 6
-	);
-	Port 
-	(
-		clk			: in  STD_LOGIC;
-		we			: in  unsigned(3 downto 0);
-		ce			: in  STD_LOGIC;
-		addr		: in  unsigned(31 downto 0);
-		din			: in  unsigned(31 downto 0);
-		dout		: out unsigned(31 downto 0)
-	);
-END ram;
-
-ARCHITECTURE behavior OF ram IS 
-
-	constant depth : natural := 2**word_addr_width;
-	
-	type sram_t is array (0 to depth-1) of unsigned(7 downto 0);
-
-	function sram_clear return sram_t is
-
-	variable result : sram_t;
-	begin
-		for i in 0 to sram_t'length-1 loop
-			result(i) := (others => '0');
-		end loop;
-		return result;
-	end sram_clear;
-
-	signal sram0, sram1, sram2, sram3 : sram_t := sram_clear;
-	
-BEGIN
-
-
-SRAM_RW:
-	process(clk)
-	variable index : natural range 0 to depth-1;
-	begin
-		if rising_edge(clk) and ce = '1' then
-			index := to_integer(addr(word_addr_width+1 downto 2));
-			if we(0) = '1' then
-				sram0(index)<= din(7 downto 0);
-			end if;	
-			dout(7 downto 0) <= sram0(index);
-		end if;	
-	end process;
-	
-	process(clk)
-	variable index : natural range 0 to depth-1;
-	begin
-		if rising_edge(clk) and ce = '1' then
-			index := to_integer(addr(word_addr_width+1 downto 2));
-			if we(1) = '1' then
-				sram1(index)<= din(15 downto 8);
-			end if;	
-			dout(15 downto 8) <= sram1(index);
-		end if;	
-	end process;
-
-	process(clk)
-	variable index : natural range 0 to depth-1;
-	begin
-		if rising_edge(clk) and ce = '1' then
-			index := to_integer(addr(word_addr_width+1 downto 2));
-			if we(2) = '1' then
-				sram2(index)<= din(23 downto 16);
-			end if;	
-			dout(23 downto 16) <= sram2(index);
-		end if;	
-	end process;
-
-	process(clk)
-	variable index : natural range 0 to depth-1;
-	begin
-		if rising_edge(clk) and ce = '1' then
-			index := to_integer(addr(word_addr_width+1 downto 2));
-			if we(3) = '1' then
-				sram3(index)<= din(31 downto 24);
-			end if;	
-			dout(31 downto 24) <= sram3(index);
-		end if;	
-	end process;
-
-end behavior;

lib/CPUs/MIPS/src/ram_ld.vhd

@@ -1,177 +0,0 @@
--------------------------------------------------------------------------
--- 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 UNISIM;
-use UNISIM.VComponents.all;
-
-ENTITY ram IS
-	Generic 
-	(
-		word_addr_width 	: integer := 6
-	);
-	Port 
-	(
-		clk			: in  STD_LOGIC;
-		ce			: in  STD_LOGIC;
-		we			: in  unsigned(3 downto 0);
-		addr		: in  unsigned(31 downto 0);
-		din			: in  unsigned(31 downto 0);
-		dout		: out unsigned(31 downto 0)
-	);
-END ram;
-
-ARCHITECTURE behavior OF ram IS 
-
-	COMPONENT dpram_2w2r
-	Generic 
-	(
-		addr_width : integer;
-		data_width : integer
-	);
-	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;
-	
-	signal jtag_clk		: STD_LOGIC;
-	signal jtag_we		: unsigned(3 downto 0);
-	signal jtag_addr	: unsigned (15 downto 0);
-	signal jtag_dout	: unsigned (31 downto 0);
-	signal jtag_din		: unsigned (31 downto 0);
-	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 (47 downto 0);
-	
-BEGIN
-
-gen_sram:
-	for i in 0 to 3 generate
-	begin
-	inst_dpram_2w2r : dpram_2w2r
-		GENERIC MAP
-		(
-			addr_width	=> word_addr_width,
-			data_width	=> 8
-		)
-		PORT MAP
-		(
-			clk_a		=> clk,
-			en_a		=> ce,
-			we_a		=> we(i),
-			addr_a		=> addr(word_addr_width+1 downto 2),
-			din_a		=> din((i+1)*8-1 downto i*8),
-			dout_a		=> dout((i+1)*8-1 downto i*8),
-
-			clk_b		=> jtag_clk,
-			en_b		=> jtag_we(i),
-			we_b		=> jtag_we(i),
-			addr_b		=> jtag_addr(word_addr_width-1 downto 0),
-			din_b		=> jtag_din((i+1)*8-1 downto i*8),
-			dout_b		=> jtag_dout((i+1)*8-1 downto i*8)
-		);
-	end generate;
-	
---------------------------------------------------------------------------
--- 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_addr	<= user_regi(user_regi'left downto jtag_dout'length);
-	jtag_din	<= user_regi(jtag_dout'length-1 downto 0);
-	jtag_clk	<= bs_update1;
-	jtag_we		<= (3 downto 0 => 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 jtag_dout'length => '0') & jtag_dout;	
-			end if;
-		end if;
-	end process;	
-	
---------------------------------------------------------------------------
-end behavior;

lib/CPUs/MIPS/src/ram_sim.vhd

@@ -1,88 +0,0 @@
--------------------------------------------------------------------------
--- 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 ram IS
-	Generic 
-	(
-		word_addr_width 	: integer := 6
-	);
-	Port 
-	(
-		clk			: in  STD_LOGIC;
-		ce			: in  STD_LOGIC;
-		we			: in  unsigned(3 downto 0);
-		addr		: in  unsigned(31 downto 0);
-		din			: in  unsigned(31 downto 0);
-		dout		: out unsigned(31 downto 0)
-	);
-END ram;
-
-ARCHITECTURE behavior OF ram IS 
-
-	constant depth : natural := 2**word_addr_width;
-	
-	type sram_t is array (0 to depth-1) of unsigned(31 downto 0);
-
-	function sram_clear return sram_t is
-
-	variable result : sram_t;
-	begin
-		for i in 0 to sram_t'length-1 loop
-			result(i) := (others => '0');
-		end loop;
-		return result;
-	end sram_clear;
-
-	signal sram : sram_t := sram_clear;
-	
-BEGIN
-
-
-SRAM_RW:
-	process(clk)
-	variable index : natural range 0 to depth-1;
-	begin
-		if rising_edge(clk) and ce = '1' then
-			index := to_integer(addr(word_addr_width+1 downto 2));
-			if we(0) = '1' then
-				sram(index)(7 downto 0)		<= din(7 downto 0);
-			end if;	
-			if we(1) = '1' then
-				sram(index)(15 downto 8)	<= din(15 downto 8);
-			end if;	
-			if we(2) = '1' then
-				sram(index)(23 downto 16)	<= din(23 downto 16);
-			end if;	
-			if we(3) = '1' then
-				sram(index)(31 downto 24)	<= din(31 downto 24);
-			end if;	
-			dout <= sram(index);
-		end if;	
-	end process;
-	
-end behavior;

lib/CPUs/MIPS/src/tb_mips_embedded.vhd

@@ -1,82 +0,0 @@
--------------------------------------------------------------------------
--- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
--- This file: Testbench for 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.mips_types.all;
-
-ENTITY tb_mips_embedded IS
-END tb_mips_embedded;
-
-ARCHITECTURE behavior OF tb_mips_embedded IS 
-
-	COMPONENT mips_embedded
-	Port 
-	(
-		rst			: in  STD_LOGIC;
-		clk			: in  STD_LOGIC;
-		halt		: in  STD_LOGIC;
-		dout		: out word_t
-	);
-	END COMPONENT;
-
-	constant CLK_PERIOD : time := 10 ns;
-
-	signal rst 			: std_logic := '1';
-	signal clk 			: std_logic := '1';
-	signal halt			: std_logic := '0';
-	signal dout		 	: word_t;
-	
-BEGIN
-
-uut: mips_embedded
-	PORT MAP(
-		rst				=> rst,
-		clk				=> clk,
-		halt			=> halt,
-		dout			=> dout
-	);
-
-CLK_GEN: process
-	begin
-		wait for CLK_PERIOD/2;
-		clk <= not clk;
-	end process;
-
-STIMULUS: process
-	begin
-
-		wait for 3*CLK_PERIOD;
-		wait until rising_edge(clk);
-		rst <= '0';
-	
-		wait; 
-	
-	end process;
-
-END;

lib/CPUs/MIPS/src/tb_mips_embedded_syn.vhd

@@ -1,123 +0,0 @@
--------------------------------------------------------------------------
--- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
--- This file: Testbench for 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.
-
-ENTITY tb_mips_embedded_syn IS
-END tb_mips_embedded_syn;
-
-ARCHITECTURE behavior OF tb_mips_embedded_syn IS 
-
-	COMPONENT mips_embedded_syn
-	Port 
-	(
-		sys_rst_n_in		: in  STD_LOGIC;
-		sys_clk_in			: in  STD_LOGIC;
-		sys_dip				: in  STD_LOGIC_VECTOR (7 downto 0);
-		sys_btn				: in  STD_LOGIC_VECTOR (8 downto 0);
-		sys_led				: out STD_LOGIC_VECTOR (7 downto 0);
-		sys_rx				: in  STD_LOGIC;
-		sys_tx				: out STD_LOGIC;
-		sys_error			: out STD_LOGIC_VECTOR (1 downto 0)
-	);
-	END COMPONENT;
-
-	constant CLK_PERIOD : time := 10.0 ns;
-
-	signal sys_rst_n_in			: std_logic := '0';
-	signal sys_clk_in			: std_logic := '1';
-	signal sys_led	 			: STD_LOGIC_VECTOR (7 downto 0);
-	signal sys_btn	 			: STD_LOGIC_VECTOR (8 downto 0) := "000000000";
-	signal sys_dip	 			: STD_LOGIC_VECTOR (7 downto 0) := "10001001";
-	signal sys_error 			: STD_LOGIC_VECTOR (1 downto 0);
-	signal sys_rx				: std_logic := '1';
-	signal sys_tx				: std_logic;
-	
-BEGIN
-
-uut: mips_embedded_syn
-	PORT MAP
-	(
-		sys_rst_n_in			=> sys_rst_n_in,
-		sys_clk_in				=> sys_clk_in,
-		sys_btn					=> sys_btn,
-		sys_dip					=> sys_dip,
-		sys_led					=> sys_led,
-		sys_rx					=> sys_rx,
-		sys_tx					=> sys_tx,
-		sys_error				=> sys_error
-	);
-
-CLK_GEN: process
-	begin
-		wait for CLK_PERIOD/2;
-		sys_clk_in <= not sys_clk_in;
-	end process;
-
-STIMULUS1: process
-	begin
-
-		wait for 3*CLK_PERIOD;
-		wait until rising_edge(sys_clk_in);
-		sys_rst_n_in <= '1';
-	
-		
-		
---		wait for 9994999*CLK_PERIOD;
---		for i in 1 to 10000 loop
---			wait for 100*CLK_PERIOD;
---			sys_btn(3) <= '1';
---			wait for 10*CLK_PERIOD;
---			sys_btn(3) <= '0';
---		end loop;		
-		
-		wait until rising_edge(sys_clk_in) and now = 38980 ns;
-		sys_btn <= "000001000";
-		wait until rising_edge(sys_clk_in);
-		sys_btn <= "000000000";
-
-		wait; 
-	
-	end process;
-
-STIMULUS2: process
-	begin
-
-	
-		wait for 9999999*CLK_PERIOD;
-		for i in 1 to 10000 loop
-			wait for 137*CLK_PERIOD;
-			sys_btn(4) <= '1';
-			wait for 21*CLK_PERIOD;
-			sys_btn(4) <= '0';
-		end loop;		
-
-		wait; 
-	
-	end process;
-
-END;

lib/CPUs/MIPS/src/tb_mips_muldiv.vhd

@@ -1,308 +0,0 @@
--------------------------------------------------------------------------
--- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
--- This file: Testbench for 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;
-
-library work;
-use work.mips_types.all;
-use work.mips_instr.all;
-
-ENTITY tb_mips_muldiv IS
-END tb_mips_muldiv;
-
-ARCHITECTURE behavior OF tb_mips_muldiv IS 
-
-	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;
-		s_un		: in  std_logic;
-		start		: in  std_logic;
-		hilo_sel	: in  std_logic;
-		busy		: out std_logic;
-		dout		: out word_t
-	);
-	END COMPONENT;
-
-	constant CLK_PERIOD : time := 10 ns;
-	signal ENABLE_FAIL_REPORT : boolean := true;
-	signal rst 			: std_logic := '1';
-	signal clk 			: std_logic := '1';
-	signal busy			: std_logic;
-	signal mul_divn		: std_logic := '0';
-	signal s_un			: std_logic := '1';
-	signal hilo_we		: std_logic := '0';
-	signal start		: std_logic := '0';
-	signal din_hi		: word_t := (others => '-');
-	signal din_lo		: word_t := (others => '-');
-	signal ref_hi		: word_t := (others => '-');
-	signal ref_lo		: word_t := (others => '-');
-	signal dout			: word_t;
-	signal hilo_sel		: std_logic := '0';
-	signal result		: unsigned (2*word_t'length-1 downto 0);
-	signal ref_result	: unsigned (2*word_t'length-1 downto 0);
-	
-	type word_array_t is array (natural range <>) of word_t;
-	
-	constant operands : word_array_t(0 to 63) := 
-	(
-		X"00000000",
-		X"00000001",
-		X"00000010",
-		X"00000100",
-		X"00001000",
-		X"00010000",
-		X"00100000",
-		X"01000000",
-		X"10000000",
-		X"0000000F",
-		X"000000FF",
-		X"00000FFF",
-		X"0000FFFF",
-		X"000FFFFF",
-		X"00FFFFFF",
-		X"0FFFFFFF",
-		X"12345678",
-		X"23456789",
-		X"7FFFFFFF",
-		X"80000000",
-		X"A541B3B9",
-		X"80000001",
-		X"80000010",
-		X"80000100",
-		X"80001000",
-		X"80010000",
-		X"80100000",
-		X"81000000",
-		X"87654321",
-		X"98765432",
-		X"FFFFFFFF",
-		X"FFFFFFFE",
-		X"FFFFFFFD",
-		X"FFFFFFFB",
-		X"FFFFFFF7",
-		X"FFFFFFEF",
-		X"FFFFFFDF",
-		X"FFFFFFBF",
-		X"FFFFFF7F",
-		X"FFFFFEFF",
-		X"FFFFFDFF",
-		X"FFFFFBFF",
-		X"FFFFF7FF",
-		X"FFFFEFFF",
-		X"FFFFDFFF",
-		X"FFFFBFFF",
-		X"FFFF7FFF",
-		X"FFFEFFFF",
-		X"FFFDFFFF",
-		X"FFFBFFFF",
-		X"FFF7FFFF",
-		X"FFEFFFFF",
-		X"FFDFFFFF",
-		X"FFBFFFFF",
-		X"FF7FFFFF",
-		X"FEFFFFFF",
-		X"FDFFFFFF",
-		X"FBFFFFFF",
-		X"F7FFFFFF",
-		X"EFFFFFFF",
-		X"DFFFFFFF",
-		X"BFFFFFFF",
-		X"CFFFFFFF",
-		X"7FFFFFFF"
-	);
-	
-BEGIN
-
-uut: muldiv
-	PORT MAP(
-		rst				=> rst,
-		clk				=> clk,
-		hilo_we			=> hilo_we,
-		din_hi			=> din_hi,
-		din_lo			=> din_lo,
-		mul_divn		=> mul_divn,
-		s_un			=> s_un,
-		start			=> start,
-		hilo_sel		=> hilo_sel,
-		busy			=> busy,
-		dout			=> dout
-	);
-
-CLK_GEN: process
-	begin
-		wait for CLK_PERIOD/2;
-		clk <= not clk;
-	end process;
-
-REF_GEN: process
-	variable tmp : unsigned (2*word_t'length-1 downto 0);
-	variable tmp2 : unsigned (word_t'length-1 downto 0);
-	begin
-		if mul_divn = '0' then
-			wait until rising_edge(clk) and start = '1';
-			ref_lo	<= din_lo;
-			ref_hi	<= din_hi;
-			wait until rising_edge(clk) and busy = '0';
-			wait until rising_edge(clk);
-			wait until rising_edge(clk);
-			if s_un = '1' then
-				tmp			:= unsigned(signed(result(31 downto 0)) * signed(ref_lo));
-				tmp2 		:= unsigned(signed(tmp(31 downto 0)) + signed(result(63 downto 32)));
-				ref_result	<= X"00000000" & tmp2(31 downto 0);
-			else
-				tmp			:= result(31 downto 0) * ref_lo;
-				tmp2 		:= tmp(31 downto 0) + result(63 downto 32);
-				ref_result	<= X"00000000" & tmp2(31 downto 0);
-			end if;	
-			wait until rising_edge(clk);
-				
-			if ref_lo /= X"00000000" then
-				if ENABLE_FAIL_REPORT  then
-					assert ref_hi = ref_result(31 downto 0) report "Error on divison" severity failure;
-				end if;	
-			end if;	
-		else
-			wait until rising_edge(clk) and start = '1';
-			wait until rising_edge(clk) and busy = '0';
-			if s_un = '1' then
-				ref_result <= unsigned(signed(din_hi) * signed(din_lo));
-			else
-				ref_result <= unsigned(din_hi) * unsigned(din_lo);
-			end if;	
-			wait until rising_edge(clk);
-			wait until rising_edge(clk);
-			wait until rising_edge(clk);
-			if ENABLE_FAIL_REPORT then
-				assert ref_result = result report "Error on multiplication" severity failure;
-			end if;	
-		end if;
-		
-	end process;
-
-STIMULUS: process
-
-	begin
-
-		wait for 3*CLK_PERIOD;
-		wait until rising_edge(clk);
-		rst <= '0';
-		wait for 2*CLK_PERIOD;
-	
-		mul_divn	<= '0';
-		s_un		<= '0';
-		for i in 0 to operands'length-1 loop
-			for j in 0 to operands'length-1 loop
-				wait until rising_edge(clk) and busy = '0';
-				din_hi		<= operands(i);
-				din_lo		<= operands(j);
-				start		<= '1';
-				wait until rising_edge(clk);
-				start		<= '0';
-				hilo_sel	<= '0';
-
-				-- Read result
-				wait until rising_edge(clk) and busy = '0';
-				result(31 downto 0) <= dout;
-				hilo_sel	<= '1';
-				wait until rising_edge(clk);
-				result(63 downto 32) <= dout;
-				wait for 2*CLK_PERIOD;
-			end loop;
-		end loop;
-
-		s_un	<= '1';
-		for i in 0 to operands'length-1 loop
-			for j in 0 to operands'length-1 loop
-				wait until rising_edge(clk) and busy = '0';
-				din_hi		<= operands(i);
-				din_lo		<= operands(j);
-				start		<= '1';
-				wait until rising_edge(clk);
-				start		<= '0';
-				hilo_sel	<= '0';
-
-				-- Read result
-				wait until rising_edge(clk) and busy = '0';
-				result(31 downto 0) <= dout;
-				hilo_sel	<= '1';
-				wait until rising_edge(clk);
-				result(63 downto 32) <= dout;
-				wait for 2*CLK_PERIOD;
-			end loop;
-		end loop;
-	
-		mul_divn	<= '1';
-		s_un		<= '0';
-		for i in 0 to operands'length-1 loop
-			for j in 0 to operands'length-1 loop
-				wait until rising_edge(clk) and busy = '0';
-				din_hi		<= operands(i);
-				din_lo		<= operands(j);
-				start		<= '1';
-				wait until rising_edge(clk);
-				start		<= '0';
-				hilo_sel	<= '0';
-
-				-- Read result
-				wait until rising_edge(clk) and busy = '0';
-				result(31 downto 0) <= dout;
-				hilo_sel	<= '1';
-				wait until rising_edge(clk);
-				result(63 downto 32) <= dout;
-			end loop;
-		end loop;
-
-		s_un	<= '1';
-		for i in 0 to operands'length-1 loop
-			for j in 0 to operands'length-1 loop
-				wait until rising_edge(clk) and busy = '0';
-				din_hi		<= operands(i);
-				din_lo		<= operands(j);
-				start		<= '1';
-				wait until rising_edge(clk);
-				start		<= '0';
-				hilo_sel	<= '0';
-
-				-- Read result
-				wait until rising_edge(clk) and busy = '0';
-				result(31 downto 0) <= dout;
-				hilo_sel	<= '1';
-				wait until rising_edge(clk);
-				result(63 downto 32) <= dout;
-			end loop;
-		end loop;
-		
-		wait; 
-	
-	end process;
-	
-END;

lib/CPUs/MIPS/src/tb_mips_top.vhd

@@ -1,174 +0,0 @@
--------------------------------------------------------------------------
--- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
--- This file: Testbench for 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.mips_types.all;
-use work.mips_instr.all;
-
-ENTITY tb_mips_top IS
-END tb_mips_top;
-
-ARCHITECTURE behavior OF tb_mips_top IS 
-
-	COMPONENT mips_top
-	Port 
-	(
-		rst			: in  STD_LOGIC;
-		clk			: in  STD_LOGIC;
-		halt		: in  STD_LOGIC;
-		imem_din	: in  unsigned (WORD_WIDTH-1 downto 0);
-		imem_addr	: out unsigned (WORD_WIDTH-1 downto 0);
-		dmem_we		: out STD_LOGIC;
-		dmem_re		: out STD_LOGIC;
-		dmem_din	: in  unsigned (WORD_WIDTH-1 downto 0);
-		dmem_dout	: out unsigned (WORD_WIDTH-1 downto 0);
-		dmem_addr	: out unsigned (WORD_WIDTH-1 downto 0)
-		
-	);
-	END COMPONENT;
-
-	COMPONENT rom
-	Port
-	(
-		clk			: in  STD_LOGIC;
-		addr		: in  word_t;
-		dout		: out word_t
-	);
-	END COMPONENT;
-
-	COMPONENT ram
-	Generic 
-	(
-		word_addr_width 	: integer
-	);
-	Port 
-	(
-		clk			: in  STD_LOGIC;
-		we			: in  STD_LOGIC;
-		addr		: in  word_t;
-		din			: in  word_t;
-		dout		: out word_t
-	);
-	END COMPONENT;
-
-	constant CLK_PERIOD : time := 10 ns;
-
-	signal rst 			: std_logic := '1';
-	signal clk 			: std_logic := '1';
-	signal cpu_halt		: std_logic;
-	signal irom_data	: word_t := (others => '-');
-	signal irom_addr	: word_t;
-	signal dmem_din		: word_t := (others => '-');
-	signal dmem_dout 	: word_t;
-	signal dmem_addr 	: word_t;
-	signal dmem_we 		: std_logic;
-	signal dmem_re 		: std_logic;
-	
-BEGIN
-
-uut: mips_top
-	PORT MAP(
-		rst				=> rst,
-		clk				=> clk,
-		halt			=> cpu_halt,
-		imem_din		=> irom_data,
-		imem_addr		=> irom_addr,
-		dmem_we			=> dmem_we,
-		dmem_re			=> dmem_re,
-		dmem_din		=> dmem_din,
-		dmem_dout		=> dmem_dout,
-		dmem_addr		=> dmem_addr
-	);
-
-inst_rom: rom
-	PORT MAP
-	(
-		clk				=> clk,
-		addr			=> irom_addr,
-		dout 			=> irom_data
-	);
-
-inst_ram: ram
-	GENERIC MAP
-	(
-		word_addr_width	=> 6
-	)
-	PORT MAP
-	(
-		clk			=> clk,
-		we			=> dmem_we,
-		addr		=> dmem_addr,
-		din 		=> dmem_dout,
-		dout 		=> dmem_din
-	);
-
-CLK_GEN: process
-	begin
-		wait for CLK_PERIOD/2;
-		clk <= not clk;
-	end process;
-
-HLT_GEN: 
-	process(rst, clk)
-	subtype cnt_t is natural range 0 to 2;
-	variable cnt : cnt_t;
-	begin
-		if rst = '1' then
-			cnt := cnt_t'high;
-			cpu_halt <= '0';
-		elsif rising_edge(clk) then
-			cpu_halt <= '0';
-			if cnt /= 0 then
-				cnt := cnt - 1;
-			else
-				cnt := cnt_t'high;
-				cpu_halt <= '1';
-			end if;	
-		end if;
-	end process;
-
-STIMULUS: process
-
-	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;
-		wait until rising_edge(clk);
-		rst <= '0';
-		wait for 2*CLK_PERIOD;
-	
---		assert false report "Test finished" severity error;
-		wait; 
-	
-	end process;
-	
-END;

lib/CPUs/MIPS/tools/Makefile

@@ -1,8 +0,0 @@
-all: ramgen romgen
-
-ramgen: src/ramgen.c
-	gcc -o ./ramgen.exe src/ramgen.c
-	
-romgen: src/romgen.c
-	gcc -o ./romgen.exe src/romgen.c
-	

lib/CPUs/MIPS/tools/insrom.rb

@@ -1,46 +0,0 @@
-#!/usr/bin/env ruby
-
-# ----------------------------------------------------------------------
-# Project: JIPS, a portable 32-bit RISC CPU written in VHDL
-# This file: Insertion of code fragments into templates
-#
-# 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
-#
-# ---------------------------------------------------------------------
-
-arg = $*
-rom_filename = arg[0].to_s
-tpl_filename = arg[1].to_s
-
-subst_pattern = "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

lib/CPUs/MIPS/tools/irom.vhd.tpl

@@ -1,29 +0,0 @@
--------------------------------------------------------------------------
--- 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;
-
--- ROM_INSERT_HERE
-

lib/CPUs/MIPS/tools/irom_ld.vhd.tpl

@@ -1,147 +0,0 @@
--------------------------------------------------------------------------
--- Project: JIPS, a portable 32-bit RISC CPU written in VHDL
--- This file: loadable ROM
---
--- 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 UNISIM;
-use UNISIM.VComponents.all;
-
-ENTITY irom IS
-	Port (
-		clk			: 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		: unsigned (15 downto 0);
-	signal jtag_ld_dout		: unsigned (31 downto 0);
-	signal jtag_ld_din		: unsigned (31 downto 0);
-	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 (47 downto 0);
-	constant id : unsigned (47 downto 0) := X"DEAD" & X"BEEF" & "X"BABE";
-
-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 jtag_ld_dout'length);
-	jtag_ld_din <= user_regi(jtag_ld_dout'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 jtag_ld_dout'length => '0') & jtag_ld_dout;	
---				user_rego <= id;	
-			end if;
-		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;
-
---------------------------------------------------------------------------
--- ROM Read/Write
---------------------------------------------------------------------------
-PROM_READ: 
-	process(clk)
-	begin
-		if rising_edge(clk) then
-			dout <= imem_rom(to_integer(addr));
-		end if;
-	end process;
-
---------------------------------------------------------------------------
-end loadable;

lib/CPUs/MIPS/tools/make.sh

@@ -1,51 +0,0 @@
-#!/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
-#
-# ---------------------------------------------------------------------
-# $Header: /tmp/cvsroot/VHDL/lib/CPUs/MIPS/tools/make.sh,v 1.1 2008-08-25 08:29:55 Jens Exp $
-# ----------------------------------------------------------------------
-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

lib/CPUs/MIPS/tools/rom.tcl.tpl

@@ -1,61 +0,0 @@
-# ----------------------------------------------------------------------
-# 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

lib/CPUs/MIPS/tools/src/ramgen.c

@@ -1,125 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
-
-#define ARCH_NAME			"data"
-#define ENT_NAME			"ram"
-#define JTAG_ADDR_WIDTH		16
-
-// --------------------------------------------------------------
-void basename(char *pSrc, char *pDst)
-{
-	int i, size;
-
-	size = strlen(pSrc);
-
-	while(pSrc[size] != '.')
-		size--;
-
-	for (i=0; i < size; i++)
-		pDst[i] = pSrc[i];
-
-	pDst[i] = 0;
-
-}
-
-int SaveRAM_TCL(char *pFilenameIn, char *pFilenameOut, char *pArchName, char *pEntName, int nbits_addr, int nbits_data)
-{
-	FILE *pFileIn, *pFileOut;
-	long start, end;
-	int i, word, word_addr, filesize, romsize;
-	char binstr_addr[33];
-	char binstr_data[33];
-
-	char tpl[] = {"# ---------------------------------------------------------------------\n# For Chipscope 9.1\n# ---------------------------------------------------------------------\n# Source JTAG/TCL frame work\ncd $env(CHIPSCOPE)\\\\bin\\\\nt\nsource csejtag.tcl\n\nnamespace import ::chipscope::*\n\n# Platform USB Cable\nset PLATFORM_USB_CABLE_ARGS [list \"port=USB2\" \"frequency=6000000\"]\n# frequency=\"24000000 | 12000000 | 6000000 | 3000000 | 1500000 | 750000\"\n\n# Create session\nset handle [::chipscope::csejtag_session create 0]\n\n# Open JTAG and lock\nset open_result [::chipscope::csejtag_target open $handle $CSEJTAG_TARGET_PLATFORMUSB 0 $PLATFORM_USB_CABLE_ARGS]\nset lock_result [::chipscope::csejtag_target lock $handle 1000]\n\nset devlist [::chipscope::csejtag_tap autodetect_chain $handle $CSEJTAG_SCAN_DEFAULT]\n\n# Get Device ID\nset devtype \"Virtex-4SX\"\nset devid 2\nset irlength [::chipscope::csejtag_tap get_irlength $handle $devid]\nset idcode [::chipscope::csejtag_tap get_device_idcode $handle $devid]\n\nset CSE_OP $CSEJTAG_SHIFT_READWRITE\nset CSE_ES $CSEJTAG_RUN_TEST_IDLE\n\n# Write Program\n"};
-
-	pFileIn = fopen(pFilenameIn, "rb");
-	if (!pFileIn)
-	{
-		fprintf(stderr, "Error opening file %s\n", pFilenameIn);
-		return 1;
-	}
-
-	pFileOut = fopen(pFilenameOut, "wb");
-	if (!pFileOut)
-	{
-		fprintf(stderr, "Error opening file %s\n", pFilenameOut);
-		return 1;
-	}
-
-	fseek(pFileIn, 0, SEEK_SET);
-	start = ftell(pFileIn);
-	fseek(pFileIn, 0, SEEK_END);
-	end = ftell(pFileIn);
-	fseek(pFileIn, 0, SEEK_SET);
-
-	filesize = (end-start);
-	romsize = (int)pow(2, nbits_addr+2);
-
-	// -------------------------------------------------------------------------
-	// Header
-
-	// -------------------------------------------------------------------------
-	fputs(tpl, pFileOut);
-
-	// -------------------------------------------------------------------------
-	// ROM part
-	// -------------------------------------------------------------------------
-	fprintf(pFileOut, "# Assembled from %s\n", pFilenameIn);
-	fprintf(pFileOut, "# ---------------------------------------------------------------\n");
-	fprintf(pFileOut, "# Shift the USER2 Instruction (b1111000011) into the Instruction Register of FPGA\n");
-	fprintf(pFileOut, "# User 2\n");
-	fprintf(pFileOut, "set result [::chipscope::csejtag_tap shift_device_ir $handle $devid $CSE_OP $CSE_ES 0 $irlength \"3C3\"]\n\n");
-
-	word_addr = 0;
-	for (i=0; i < filesize; i += sizeof(int))
-	{
-		fread(&word, 1, sizeof(int), pFileIn);
-		fprintf(pFileOut, "::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 %d \"%4.4X%8.8X\"\n", nbits_data + JTAG_ADDR_WIDTH, word_addr, word);
-		word_addr++;
-	}
-	fprintf(pFileOut, "\n");
-
-	// -------------------------------------------------------------------------
-	// Trailer
-	// -------------------------------------------------------------------------
-	fprintf(pFileOut, "::chipscope::csejtag_target unlock $handle\n");
-	fprintf(pFileOut, "::chipscope::csejtag_target close $handle\n");
-	fprintf(pFileOut, "::chipscope::csejtag_session destroy $handle\n");
-	fprintf(pFileOut, "exit\n");
-
-	return 0;
-}
-
-int main(int argc, char *argv[])
-{
-	char *pFilenameIn;
-	char name_prj[1024];
-	char name_rom_tcl[1024];
-
-	FILE *pFileIn;
-	int filesize, romsize, nbits_addr, nbits_data;
-	long start, end;
-	int word, i;
-
-	if (argc < 2)
-	{
-		fprintf(stderr, "Usage: romgen <input file> <num. word address bits>\n");
-		return 1;
-	}
-
-	pFilenameIn = argv[1];
-	if (argc == 3)
-		nbits_addr = atoi(argv[2]);
-
-
-	basename(pFilenameIn, name_prj);
-	sprintf(name_rom_tcl, "%s.tcl", name_prj);
-
-	SaveRAM_TCL(pFilenameIn, name_rom_tcl, ARCH_NAME, ENT_NAME, nbits_addr, 32);
-
-
-	return 0;
-}
-

lib/CPUs/MIPS/tools/src/romgen.c

@@ -1,368 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
-
-#define ARCH_NAME			"data"
-#define ENT_NAME			"icache"
-#define JTAG_ADDR_WIDTH		16
-
-// --------------------------------------------------------------
-void basename(char *pSrc, char *pDst)
-{
-	int i, size;
-
-	size = strlen(pSrc);
-
-	while(pSrc[size] != '.')
-		size--;
-
-	for (i=0; i < size; i++)
-		pDst[i] = pSrc[i];
-
-	pDst[i] = 0;
-
-}
-
-int SaveROM(char *pFilenameIn, char *pFilenameOut, char *pArchName, char *pEntName, int nbits_addr, int nbits_data)
-{
-	FILE *pFileIn, *pFileOut;
-	long start, end;
-	int i, word, filesize, romsize;
-
-	pFileIn = fopen(pFilenameIn, "rb");
-	if (!pFileIn)
-	{
-		fprintf(stderr, "Error opening file %s\n", pFilenameIn);
-		return 1;
-	}
-
-	pFileOut = fopen(pFilenameOut, "wb");
-	if (!pFileOut)
-	{
-		fprintf(stderr, "Error opening file %s\n", pFilenameOut);
-		return 1;
-	}
-
-	fseek(pFileIn, 0, SEEK_SET);
-	start = ftell(pFileIn);
-	fseek(pFileIn, 0, SEEK_END);
-	end = ftell(pFileIn);
-	fseek(pFileIn, 0, SEEK_SET);
-
-	filesize = (end-start);
-	romsize = (int)pow(2, nbits_addr+2);
-
-	// -------------------------------------------------------------------------
-	// Header
-
-	// -------------------------------------------------------------------------
-	fprintf(pFileOut, "LIBRARY IEEE;\n");
-	fprintf(pFileOut, "USE IEEE.STD_LOGIC_1164.ALL;\n");
-	fprintf(pFileOut, "USE IEEE.NUMERIC_STD.ALL;\n");
-	fprintf(pFileOut, "\n");
-
-	fprintf(pFileOut, "ENTITY %s IS\n", ENT_NAME);
-	fprintf(pFileOut, "\tPort\n");
-	fprintf(pFileOut, "\t(\n");
-	fprintf(pFileOut, "\t\tclk\t\t: in  STD_LOGIC;\n");
-	fprintf(pFileOut, "\t\tce\t\t: in  STD_LOGIC;\n");
-	fprintf(pFileOut, "\t\taddr\t\t: in  unsigned(%d downto 0);\n", nbits_data-1);
-	fprintf(pFileOut, "\t\tdout\t\t: out unsigned(%d downto 0)\n", nbits_data-1);
-	fprintf(pFileOut, "\t);\n");
-	fprintf(pFileOut, "END %s;\n", ENT_NAME);
-	fprintf(pFileOut, "\n");
-
-
-	fprintf(pFileOut, "ARCHITECTURE %s OF %s IS\n", ARCH_NAME, ENT_NAME);
-	fprintf(pFileOut, "\n");
-
-	fprintf(pFileOut, "\tsubtype word_t is unsigned(%d downto 0);\n", nbits_data-1);
-	fprintf(pFileOut, "\ttype word_array_t is array (0 to %d) of word_t;\n", romsize/4-1);
-
-	fprintf(pFileOut, "\tconstant word_array : word_array_t :=\n");
-	fprintf(pFileOut, "\t(\n");
-	fprintf(pFileOut, "\n");
-
-	// -------------------------------------------------------------------------
-	// ROM part
-	// -------------------------------------------------------------------------
-	for (i=0; i < filesize; i += sizeof(int))
-	{
-		fread(&word, 1, sizeof(int), pFileIn);
-		fprintf(pFileOut, "\t\tX\"%8.8X\"", word);
-		if (i < (romsize-sizeof(int)))
-			fprintf(pFileOut, ", -- %8.8X\n", i);
-		else
-			fprintf(pFileOut, "  -- %8.8X\n", i);
-	}
-	word = 0;
-	for (; i < romsize; i += sizeof(int))
-	{
-		fprintf(pFileOut, "\t\tX\"%8.8X\"", word);
-		if (i < (romsize-sizeof(int)))
-			fprintf(pFileOut, ", -- %8.8X\n", i);
-		else
-			fprintf(pFileOut, "  -- %8.8X\n", i);
-	}
-	fprintf(pFileOut, "\t);\n");
-	fprintf(pFileOut, "\n");
-
-	// -------------------------------------------------------------------------
-	// Trailer
-	// -------------------------------------------------------------------------
-	fprintf(pFileOut, "begin\n", ARCH_NAME);
-	fprintf(pFileOut, "\n");
-	fprintf(pFileOut, "PROM_READ:\n", ARCH_NAME);
-	fprintf(pFileOut, "\tprocess(clk)\n");
-	fprintf(pFileOut, "\tbegin\n");
-	fprintf(pFileOut, "\t\tif rising_edge(clk) and ce = '1' then\n");
-	fprintf(pFileOut, "\t\t\tdout <= word_array(to_integer(addr(%d downto 2)));\n", nbits_addr+1);
-	fprintf(pFileOut, "\t\tend if;\n");
-	fprintf(pFileOut, "\tend process;\n");
-	fprintf(pFileOut, "\n");
-	fprintf(pFileOut, "end %s;\n", ARCH_NAME);
-
-	return 0;
-}
-
-int SaveROM_V4LD(char *pFilenameIn, char *pFilenameOut, char *pArchName, char *pEntName, int nbits_addr, int nbits_data)
-{
-	FILE *pFileIn, *pFileOut;
-	long start, end;
-	int i, word, filesize, romsize;
-
-	char tpl[] = {"--------------------------------------------------------------------------\n-- Virtex-4: JTAG Loader\n--------------------------------------------------------------------------\n\ti00_BUFG : BUFG\n\tport map\n\t(\n\t\tO => bs_clk1,\n        I => bs_clk0\n\t);\n\t\n\ti01_BUFG : BUFG\n\tport map\n\t(\n\t\tO => bs_update1,\n        I => bs_update0\n\t);\n\n\tBSCAN_VIRTEX4_inst1 : BSCAN_VIRTEX4 \n\tgeneric map\n\t(\n\t\tJTAG_CHAIN => 1 -- Value to set BSCAN site of device. Possible values: (1,2,3 or 4)\n\t)\n\tport map \n\t(\n\t\tCAPTURE => bs_capture, -- CAPTURE output from TAP controller\n\t\tDRCK => bs_clk0,       -- Data register output for USER functions\n\t\tRESET => bs_rst,       -- Reset output from TAP controller\n\t\tSEL => bs_sel,         -- USER active output\n\t\tSHIFT => bs_shift,     -- SHIFT output from TAP controller\n\t\tTDI => bs_tdi,        -- TDI output from TAP controller\n\t\tUPDATE => bs_update0,   -- UPDATE output from TAP controller\n\t\tTDO => bs_tdo         -- Data input for USER function\n\t);\n\n\tjtag_ld_addr <= user_regi(user_regi'left downto jtag_ld_dout'length);\n\tjtag_ld_din <= user_regi(jtag_ld_dout'length-1 downto 0);\n\tjtag_ld_clk <= bs_update1;\n\tjtag_ld_we <= bs_sel;\n\t\nsipo:\n\tprocess (bs_rst, bs_clk1, bs_tdi, bs_shift)\n\tbegin\n\t\tif bs_rst = '1' then\n\t\t\tuser_regi <= (others => '0');\n\t\telsif rising_edge(bs_clk1) then\n\t\t\tif bs_shift = '1' then\n\t\t\t\tuser_regi <= bs_tdi & user_regi(user_regi'left downto 1);\n\t\t\tend if;\n\t\tend if;\n\tend process;\t\n\npiso:\n\tprocess (bs_rst, bs_clk1, bs_shift, user_rego)\n\tbegin\n\t\tbs_tdo <= user_rego(0);\n\t\tif bs_rst = '1' then\n\t\t\tuser_rego <= (others => '0');\n\t\telsif rising_edge(bs_clk1) then\n\t\t\tif bs_shift = '1' then\n\t\t\t\tuser_rego <= user_rego(0) & user_rego(user_rego'left downto 1);\n\t\t\telse\n\t\t\t\tuser_rego <= (user_rego'left downto jtag_ld_dout'length => '0') & jtag_ld_dout;\t\n\t\n\t\t\tend if;\n\t\tend if;\n\tend process;\n\n"};
-
-	pFileIn = fopen(pFilenameIn, "rb");
-	if (!pFileIn)
-	{
-		fprintf(stderr, "Error opening file %s\n", pFilenameIn);
-		return 1;
-	}
-
-	pFileOut = fopen(pFilenameOut, "wb");
-	if (!pFileOut)
-	{
-		fprintf(stderr, "Error opening file %s\n", pFilenameOut);
-		return 1;
-	}
-
-	fseek(pFileIn, 0, SEEK_SET);
-	start = ftell(pFileIn);
-	fseek(pFileIn, 0, SEEK_END);
-	end = ftell(pFileIn);
-	fseek(pFileIn, 0, SEEK_SET);
-
-	filesize = (end-start);
-	romsize = (int)pow(2, nbits_addr+2);
-
-	// -------------------------------------------------------------------------
-	// Header
-
-	// -------------------------------------------------------------------------
-	fprintf(pFileOut, "LIBRARY IEEE;\n");
-	fprintf(pFileOut, "USE IEEE.STD_LOGIC_1164.ALL;\n");
-	fprintf(pFileOut, "USE IEEE.NUMERIC_STD.ALL;\n");
-	fprintf(pFileOut, "\n");
-
-	fprintf(pFileOut, "library UNISIM;\n");
-	fprintf(pFileOut, "use UNISIM.VComponents.all;\n");
-	fprintf(pFileOut, "\n");
-
-	fprintf(pFileOut, "ENTITY %s IS\n", ENT_NAME);
-	fprintf(pFileOut, "\tPort\n");
-	fprintf(pFileOut, "\t(\n");
-	fprintf(pFileOut, "\t\tclk\t\t: in  STD_LOGIC;\n");
-	fprintf(pFileOut, "\t\tce\t\t: in  STD_LOGIC;\n");
-	fprintf(pFileOut, "\t\taddr\t\t: in  unsigned(%d downto 0);\n", nbits_data-1);
-	fprintf(pFileOut, "\t\tdout\t\t: out unsigned(%d downto 0)\n", nbits_data-1);
-	fprintf(pFileOut, "\t);\n");
-	fprintf(pFileOut, "END %s;\n", ENT_NAME);
-	fprintf(pFileOut, "\n");
-
-
-	fprintf(pFileOut, "ARCHITECTURE %s OF %s IS\n", ARCH_NAME, ENT_NAME);
-	fprintf(pFileOut, "\n");
-
-	fprintf(pFileOut, "\tsubtype word_t is unsigned(%d downto 0);\n", nbits_data-1);
-	fprintf(pFileOut, "\ttype word_array_t is array (0 to %d) of word_t;\n", romsize/4-1);
-
-	fprintf(pFileOut, "\tsignal jtag_ld_clk\t\t: STD_LOGIC;\n");
-	fprintf(pFileOut, "\tsignal jtag_ld_we\t\t: STD_LOGIC;\n");
-	fprintf(pFileOut, "\tsignal jtag_ld_addr\t\t: unsigned (%d downto 0);\n", JTAG_ADDR_WIDTH-1);
-	fprintf(pFileOut, "\tsignal jtag_ld_dout\t\t: unsigned (%d downto 0);\n", nbits_data-1);
-	fprintf(pFileOut, "\tsignal jtag_ld_din\t\t: unsigned (%d downto 0);\n", nbits_data-1);
-	fprintf(pFileOut, "\tsignal bs_rst, bs_sel, bs_shift, bs_tdi, bs_tdo : std_logic;\n");
-	fprintf(pFileOut, "\tsignal bs_capture, bs_clk0, bs_clk1, bs_update0, bs_update1 : std_logic;\n");
-	fprintf(pFileOut, "\tsignal user_regi, user_rego : unsigned (%d downto 0);\n", 31 + JTAG_ADDR_WIDTH);
-	fprintf(pFileOut, "\n");
-
-	fprintf(pFileOut, "\tsignal word_array : word_array_t :=\n");
-	fprintf(pFileOut, "\t(\n");
-	fprintf(pFileOut, "\n");
-
-	// -------------------------------------------------------------------------
-	// ROM part
-	// -------------------------------------------------------------------------
-	for (i=0; i < filesize; i += sizeof(int))
-	{
-		fread(&word, 1, sizeof(int), pFileIn);
-		fprintf(pFileOut, "\t\tX\"%8.8X\"", word);
-		if (i < (romsize-sizeof(int)))
-			fprintf(pFileOut, ", -- %8.8X\n", i);
-		else
-			fprintf(pFileOut, "  -- %8.8X\n", i);
-	}
-	word = 0;
-	for (; i < romsize; i += sizeof(int))
-	{
-		fprintf(pFileOut, "\t\tX\"%8.8X\"", word);
-		if (i < (romsize-sizeof(int)))
-			fprintf(pFileOut, ", -- %8.8X\n", i);
-		else
-			fprintf(pFileOut, "  -- %8.8X\n", i);
-	}
-	fprintf(pFileOut, "\t);\n");
-	fprintf(pFileOut, "\n");
-
-	fprintf(pFileOut, "begin\n", ARCH_NAME);
-
-	fprintf(pFileOut, "\n");
-	fprintf(pFileOut, "PROM_READ:\n", ARCH_NAME);
-	fprintf(pFileOut, "\tprocess(clk)\n");
-	fprintf(pFileOut, "\tbegin\n");
-	fprintf(pFileOut, "\t\tif rising_edge(clk) and ce = '1' then\n");
-	fprintf(pFileOut, "\t\t\tdout <= word_array(to_integer(addr(%d downto 2)));\n", nbits_addr+1);
-	fprintf(pFileOut, "\t\tend if;\n");
-	fprintf(pFileOut, "\tend process;\n");
-	fprintf(pFileOut, "\n");
-
-	// -------------------------------------------------------------------------
-	// Trailer
-	// -------------------------------------------------------------------------
-	fprintf(pFileOut, "\n");
-	fputs(tpl, pFileOut);
-
-	fprintf(pFileOut, "PROM_WRITE:\n", ARCH_NAME);
-	fprintf(pFileOut, "\tprocess(jtag_ld_clk, jtag_ld_we)\n");
-	fprintf(pFileOut, "\tbegin\n");
-	fprintf(pFileOut, "\t\tif rising_edge(jtag_ld_clk) then\n");
-	fprintf(pFileOut, "\t\t\tif jtag_ld_we = '1' then\n");
-	fprintf(pFileOut, "\t\t\t\tword_array(to_integer(jtag_ld_addr(%d downto 0))) <= jtag_ld_din;\n", nbits_addr-1);
-	fprintf(pFileOut, "\t\t\telse\n");
-	fprintf(pFileOut, "\t\t\t\tjtag_ld_dout <= word_array(to_integer(jtag_ld_addr(%d downto 0)));\n", nbits_addr-1);
-	fprintf(pFileOut, "\t\t\tend if;\n");
-	fprintf(pFileOut, "\t\tend if;\n");
-	fprintf(pFileOut, "\tend process;\n");
-	fprintf(pFileOut, "\n");
-
-	fprintf(pFileOut, "end %s;\n", ARCH_NAME);
-	return 0;
-}
-
-int SaveROM_TCL(char *pFilenameIn, char *pFilenameOut, char *pArchName, char *pEntName, int nbits_addr, int nbits_data)
-{
-	FILE *pFileIn, *pFileOut;
-	long start, end;
-	int i, word, word_addr, filesize, romsize;
-	char binstr_addr[33];
-	char binstr_data[33];
-
-	char tpl[] = {"# ---------------------------------------------------------------------\n# For Chipscope 9.1\n# ---------------------------------------------------------------------\n# Source JTAG/TCL frame work\ncd $env(CHIPSCOPE)\\\\bin\\\\nt\nsource csejtag.tcl\n\nnamespace import ::chipscope::*\n\n# Platform USB Cable\nset PLATFORM_USB_CABLE_ARGS [list \"port=USB2\" \"frequency=6000000\"]\n# frequency=\"24000000 | 12000000 | 6000000 | 3000000 | 1500000 | 750000\"\n\n# Create session\nset handle [::chipscope::csejtag_session create 0]\n\n# Open JTAG and lock\nset open_result [::chipscope::csejtag_target open $handle $CSEJTAG_TARGET_PLATFORMUSB 0 $PLATFORM_USB_CABLE_ARGS]\nset lock_result [::chipscope::csejtag_target lock $handle 1000]\n\nset devlist [::chipscope::csejtag_tap autodetect_chain $handle $CSEJTAG_SCAN_DEFAULT]\n\n# Get Device ID\nset devtype \"Virtex-4SX\"\nset devid 2\nset irlength [::chipscope::csejtag_tap get_irlength $handle $devid]\nset idcode [::chipscope::csejtag_tap get_device_idcode $handle $devid]\n\nset CSE_OP $CSEJTAG_SHIFT_READWRITE\nset CSE_ES $CSEJTAG_RUN_TEST_IDLE\n\n# Write Program\n"};
-
-	pFileIn = fopen(pFilenameIn, "rb");
-	if (!pFileIn)
-	{
-		fprintf(stderr, "Error opening file %s\n", pFilenameIn);
-		return 1;
-	}
-
-	pFileOut = fopen(pFilenameOut, "wb");
-	if (!pFileOut)
-	{
-		fprintf(stderr, "Error opening file %s\n", pFilenameOut);
-		return 1;
-	}
-
-	fseek(pFileIn, 0, SEEK_SET);
-	start = ftell(pFileIn);
-	fseek(pFileIn, 0, SEEK_END);
-	end = ftell(pFileIn);
-	fseek(pFileIn, 0, SEEK_SET);
-
-	filesize = (end-start);
-	romsize = (int)pow(2, nbits_addr+2);
-
-	// -------------------------------------------------------------------------
-	// Header
-
-	// -------------------------------------------------------------------------
-	fputs(tpl, pFileOut);
-
-	// -------------------------------------------------------------------------
-	// ROM part
-	// -------------------------------------------------------------------------
-	fprintf(pFileOut, "# Assembled from %s\n", pFilenameIn);
-	fprintf(pFileOut, "# ---------------------------------------------------------------\n");
-	fprintf(pFileOut, "# Shift the USER1 Instruction (b1111000010) into the Instruction Register of FPGA\n");
-	fprintf(pFileOut, "# User 1\n");
-	fprintf(pFileOut, "set result [::chipscope::csejtag_tap shift_device_ir $handle $devid $CSE_OP $CSE_ES 0 $irlength \"3C2\"]\n\n");
-
-	word_addr = 0;
-	for (i=0; i < filesize; i += sizeof(int))
-	{
-		fread(&word, 1, sizeof(int), pFileIn);
-		fprintf(pFileOut, "::chipscope::csejtag_tap shift_device_dr $handle $devid $CSE_OP $CSE_ES 0 %d \"%4.4X%8.8X\"\n", nbits_data + JTAG_ADDR_WIDTH, word_addr, word);
-		word_addr++;
-	}
-	fprintf(pFileOut, "\n");
-
-	// -------------------------------------------------------------------------
-	// Trailer
-	// -------------------------------------------------------------------------
-	fprintf(pFileOut, "::chipscope::csejtag_target unlock $handle\n");
-	fprintf(pFileOut, "::chipscope::csejtag_target close $handle\n");
-	fprintf(pFileOut, "::chipscope::csejtag_session destroy $handle\n");
-	fprintf(pFileOut, "exit\n");
-
-	return 0;
-}
-
-int main(int argc, char *argv[])
-{
-	char *pFilenameIn;
-	char name_prj[1024];
-	char name_rom[1024];
-	char name_rom_v4ld[1024];
-	char name_rom_tcl[1024];
-
-	FILE *pFileIn;
-	int filesize, romsize, nbits_addr, nbits_data;
-	long start, end;
-	int word, i;
-
-	if (argc < 2)
-	{
-		fprintf(stderr, "Usage: romgen <input file> <num. word address bits>\n");
-		return 1;
-	}
-
-	pFilenameIn = argv[1];
-	if (argc == 3)
-		nbits_addr = atoi(argv[2]);
-
-
-	basename(pFilenameIn, name_prj);
-	sprintf(name_rom, "%s.vhd", name_prj);
-	sprintf(name_rom_v4ld, "%s_ld.vhd", name_prj);
-	sprintf(name_rom_tcl, "%s.tcl", name_prj);
-
-	SaveROM(pFilenameIn, name_rom, ARCH_NAME, ENT_NAME, nbits_addr, 32);
-	SaveROM_V4LD(pFilenameIn, name_rom_v4ld, ARCH_NAME, ENT_NAME, nbits_addr, 32);
-	SaveROM_TCL(pFilenameIn, name_rom_tcl, ARCH_NAME, ENT_NAME, nbits_addr, 32);
-
-
-	return 0;
-}
-

lib/FIFO/sim/tb_async_fifo_ctrl.fdo

@@ -1,15 +0,0 @@
-## NOTE:  Do not edit this file.
-##
-vlib work
-vcom -explicit  -93 "../src/fifo_ctrl_pkg.vhd"
-vcom -explicit  -93 "../src/gray_counter.vhd"
-vcom -explicit  -93 "../src/dpram.vhd"
-vcom -explicit  -93 "../src/async_fifo_ctrl.vhd"
-vcom -explicit  -93 "../src/tb_async_fifo_ctrl.vhd"
-vsim -t 1ps   -lib work tb_async_fifo_ctrl
-view wave
-do {tb_async_fifo_ctrl.wdo}
-view structure
-view signals
-
-run 10us

lib/FIFO/sim/tb_async_fifo_ctrl.wdo

@@ -1,36 +0,0 @@
-onerror {resume}
-quietly WaveActivateNextPane {} 0
-add wave -noupdate -format Logic /tb_async_fifo_ctrl/rst
-add wave -noupdate -format Logic /tb_async_fifo_ctrl/clk_w
-add wave -noupdate -format Logic /tb_async_fifo_ctrl/we
-add wave -noupdate -format Literal -radix hexadecimal /tb_async_fifo_ctrl/ptr_w
-add wave -noupdate -format Logic /tb_async_fifo_ctrl/clk_r
-add wave -noupdate -format Logic /tb_async_fifo_ctrl/re
-add wave -noupdate -format Literal -radix hexadecimal /tb_async_fifo_ctrl/ptr_r
-add wave -noupdate -format Logic /tb_async_fifo_ctrl/fifo_almost_empty
-add wave -noupdate -format Logic /tb_async_fifo_ctrl/fifo_empty
-add wave -noupdate -format Logic /tb_async_fifo_ctrl/fifo_almost_full
-add wave -noupdate -format Logic /tb_async_fifo_ctrl/fifo_full
-add wave -noupdate -format Literal -radix hexadecimal /tb_async_fifo_ctrl/din
-add wave -noupdate -format Literal -radix hexadecimal /tb_async_fifo_ctrl/dout
-add wave -noupdate -format Logic /tb_async_fifo_ctrl/uut/inst_gray_counter_w/ce
-add wave -noupdate -format Literal -radix hexadecimal /tb_async_fifo_ctrl/uut/bnxt_w
-add wave -noupdate -format Literal /tb_async_fifo_ctrl/uut/bcnt_r
-add wave -noupdate -format Literal -radix decimal /tb_async_fifo_ctrl/uut/diffw
-add wave -noupdate -format Literal -radix decimal /tb_async_fifo_ctrl/uut/diffr
-TreeUpdate [SetDefaultTree]
-WaveRestoreCursors {{Cursor 1} {250000 ps} 0}
-configure wave -namecolwidth 190
-configure wave -valuecolwidth 80
-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 {115874 ps} {612358 ps}

lib/FIFO/sim/tb_gray_counter.fdo

@@ -1,13 +0,0 @@
-## NOTE:  Do not edit this file.
-##
-vlib work
-vcom -explicit  -93 "../src/fifo_ctrl_pkg.vhd"
-vcom -explicit  -93 "../src/gray_counter.vhd"
-vcom -explicit  -93 "../src/tb_gray_counter.vhd"
-vsim -t 1ps   -lib work tb_gray_counter
-view wave
-do {tb_gray_counter.wdo}
-view structure
-view signals
-
-run 1us

lib/FIFO/sim/tb_gray_counter.wdo

@@ -1,25 +0,0 @@
-onerror {resume}
-quietly WaveActivateNextPane {} 0
-add wave -noupdate -format Logic /tb_gray_counter/rst
-add wave -noupdate -format Logic /tb_gray_counter/ce
-add wave -noupdate -format Logic /tb_gray_counter/clk
-add wave -noupdate -format Literal /tb_gray_counter/bcnt
-add wave -noupdate -format Literal /tb_gray_counter/bnxt
-add wave -noupdate -format Literal /tb_gray_counter/gcnt
-add wave -noupdate -format Literal /tb_gray_counter/gnxt
-TreeUpdate [SetDefaultTree]
-WaveRestoreCursors {{Cursor 1} {20898 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 {0 ps} {134759 ps}

lib/FIFO/sim/tb_sync_fifo_ctrl.fdo

@@ -1,15 +0,0 @@
-## NOTE:  Do not edit this file.
-##
-vlib work
-vcom -explicit  -93 "../src/fifo_ctrl_pkg.vhd"
-vcom -explicit  -93 "../src/gray_counter.vhd"
-vcom -explicit  -93 "../src/dpram.vhd"
-vcom -explicit  -93 "../src/sync_fifo_ctrl.vhd"
-vcom -explicit  -93 "../src/tb_sync_fifo_ctrl.vhd"
-vsim -t 1ps   -lib work tb_sync_fifo_ctrl
-view wave
-do {tb_sync_fifo_ctrl.wdo}
-view structure
-view signals
-
-run 10us

lib/FIFO/sim/tb_sync_fifo_ctrl.wdo

@@ -1,32 +0,0 @@
-onerror {resume}
-quietly WaveActivateNextPane {} 0
-add wave -noupdate -format Logic /tb_sync_fifo_ctrl/rst
-add wave -noupdate -format Logic /tb_sync_fifo_ctrl/we
-add wave -noupdate -format Literal -radix hexadecimal /tb_sync_fifo_ctrl/ptr_w
-add wave -noupdate -format Logic /tb_sync_fifo_ctrl/re
-add wave -noupdate -format Literal -radix hexadecimal /tb_sync_fifo_ctrl/ptr_r
-add wave -noupdate -format Logic /tb_sync_fifo_ctrl/fifo_almost_empty
-add wave -noupdate -format Logic /tb_sync_fifo_ctrl/fifo_empty
-add wave -noupdate -format Logic /tb_sync_fifo_ctrl/fifo_almost_full
-add wave -noupdate -format Logic /tb_sync_fifo_ctrl/fifo_full
-add wave -noupdate -format Literal -radix hexadecimal /tb_sync_fifo_ctrl/din
-add wave -noupdate -format Literal -radix hexadecimal /tb_sync_fifo_ctrl/dout
-add wave -noupdate -format Literal -radix unsigned /tb_sync_fifo_ctrl/uut/pw_next
-add wave -noupdate -format Literal -radix unsigned /tb_sync_fifo_ctrl/uut/pr_next
-add wave -noupdate -format Literal -radix unsigned /tb_sync_fifo_ctrl/uut/diff
-TreeUpdate [SetDefaultTree]
-WaveRestoreCursors {{Cursor 1} {290000 ps} 0}
-configure wave -namecolwidth 190
-configure wave -valuecolwidth 80
-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} {2166667 ps}

lib/FIFO/src/async_fifo_ctrl.vhd

@@ -1,244 +0,0 @@
--------------------------------------------------------------------------
--- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
--- This file: The call/return/data stack
-
--- 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
-
------------------------------------------------------------------------
--- $Header: /tmp/cvsroot/VHDL/lib/FIFO/src/async_fifo_ctrl.vhd,v 1.2 2008-10-25 11:21:47 Jens Exp $
------------------------------------------------------------------------
-
-library IEEE;
-use IEEE.STD_LOGIC_1164.ALL;
-use IEEE.numeric_std.ALL;
-
-LIBRARY WORK;
-USE WORK.FIFO_CTRL_PKG.ALL;
-
-entity async_fifo_ctrl is
-	Generic (
-		addr_width : integer := 3;
-		almost_full_thresh : integer := 6;
-		almost_empty_thresh : integer := 2
-	);
-	Port
-	(
-		rst					: in  STD_LOGIC;
-		clk_w				: in  STD_LOGIC;
-		clk_r				: in  STD_LOGIC;
-		we					: in  STD_LOGIC;
-		re					: in  STD_LOGIC;
-		ptr_w				: out unsigned (addr_width-1 downto 0);
-		ptr_r				: out unsigned (addr_width-1 downto 0);
-		fifo_full			: out STD_LOGIC;
-		fifo_empty			: out STD_LOGIC;
-		fifo_afull			: out STD_LOGIC;
-		fifo_aempty			: out STD_LOGIC
-	);
-end async_fifo_ctrl;
-
-architecture Behavioral of async_fifo_ctrl is
-
-	signal gcnt_w		: unsigned (addr_width downto 0);
-	signal gcnt2_w		: unsigned (addr_width downto 0);
-	signal bcnt2_aw		: unsigned (addr_width downto 0);
-	signal bcnt_w		: unsigned (addr_width downto 0);
-	signal gnxt_w		: unsigned (addr_width downto 0);
-	signal bnxt_w		: unsigned (addr_width downto 0);
-	signal gcnt_r		: unsigned (addr_width downto 0);
-	signal gcnt2_r		: unsigned (addr_width downto 0);
-	signal bcnt2_ar		: unsigned (addr_width downto 0);
-	signal bcnt_r		: unsigned (addr_width downto 0);
-	signal gnxt_r		: unsigned (addr_width downto 0);
-	signal bnxt_r		: unsigned (addr_width downto 0);
-
-	signal empty, full : std_logic;
-	signal write_inhibit, read_inhibit : std_logic;
-	signal winc, rinc : std_logic;
-
-	-- synthesis translate_off
-	signal diffw		: signed (addr_width downto 0);
-	signal diffr		: signed (addr_width downto 0);
-	-- synthesis translate_on
-
-begin
-
-	ptr_w		<= bcnt_w(addr_width-1 downto 0);
-	ptr_r		<= bnxt_r(addr_width-1 downto 0);
-	winc		<= we and (not write_inhibit);
-	rinc		<= re and (not read_inhibit);
-	fifo_full	<= write_inhibit;
-	fifo_empty	<= read_inhibit;
-	
-proc_write_inhibit:
-	process(rst, clk_w)
-	begin
-		if rst = '1' then
-			write_inhibit	<= '0';
-		elsif rising_edge(clk_w) then
-			write_inhibit	<= full;
-		end if;
-	end process;
-	
-proc_read_inhibit:
-	process(rst, clk_r)
-	begin
-		if rst = '1' then
-			read_inhibit	<= '1';
-		elsif rising_edge(clk_r) then
-			read_inhibit	<= empty;
-		end if;
-	end process;
-
-proc_sync_grptr:
-	process(clk_w)
-	variable p1, p2	: unsigned (addr_width downto 0);
-	begin
-		if rising_edge(clk_w) then
-			gcnt2_r <= p2;
-			p2 := p1;
-			p1 := gcnt_r;
-		end if;
-	end process;
-
-proc_ptr_gwptr:
-	process(clk_r)
-	variable p1, p2	: unsigned (addr_width downto 0);
-	begin
-		if rising_edge(clk_r) then
-			gcnt2_w <= p2;
-			p2 := p1;
-			p1 := gcnt_w;
-		end if;
-	end process;
-	
-proc_status_full:
-	process(gnxt_w, gcnt2_r)
-	begin
-		if (gnxt_w = (not gcnt2_r(gcnt2_r'left downto gcnt2_r'left-1) & gcnt2_r(gcnt2_r'left-2 downto 0))) then
-			full <= '1';
-		else
-			full <= '0';
-		end if;
-	end process;
-
-proc_status_empty:
-	process(gnxt_r, gcnt2_w)
-	begin
-		if (gnxt_r = gcnt2_w) then
-			empty <= '1';
-		else
-			empty <= '0';
-		end if;
-	end process;
-	
-proc_sync_arptr:
-	process(clk_w)
-	variable p1, p2	: unsigned (addr_width downto 0);
-	begin
-		if rising_edge(clk_w) then
-			bcnt2_ar <= p2;
-			p2 := p1;
-			p1 := bcnt_r;
-		end if;
-	end process;
-
-proc_ptr_awptr:
-	process(clk_r)
-	variable p1, p2	: unsigned (addr_width downto 0);
-	begin
-		if rising_edge(clk_r) then
-			bcnt2_aw <= p2;
-			p2 := p1;
-			p1 := bcnt_w;
-		end if;
-	end process;
-	
-proc_status_almost_full:
-	process(rst, clk_w)
-	variable diff : unsigned (addr_width downto 0);
-	begin
-	-- synthesis translate_off
-		diffw <= signed(diff);
-	-- synthesis translate_on
-		if rst = '1' then
-			fifo_afull <= '0';
-			diff := (others => '0');
-		elsif rising_edge(clk_w) then
-			if diff >= almost_full_thresh-1 then
-				fifo_afull <= '1';
-			else
-				fifo_afull <= '0';
-			end if;	
-			diff := unsigned(abs(signed(bnxt_w) - signed(bcnt2_ar)));
-		end if;
-	end process;
-
-proc_status_almost_empty:
-	process(rst, clk_r)
-	variable diff : unsigned (addr_width downto 0);
-	begin
-	-- synthesis translate_off
-		diffr <= signed(diff);
-	-- synthesis translate_on
-		if rst = '1' then
-			fifo_aempty <= '1';
-			diff := (others => '0');
-		elsif rising_edge(clk_r) then
-			if diff <= almost_empty_thresh+1 then
-				fifo_aempty <= '1';
-			else
-				fifo_aempty <= '0';
-			end if;	
-			diff := unsigned(abs(signed(bcnt2_aw) - signed(bnxt_r)));
-		end if;
-	end process;
-
-inst_gray_counter_w : entity work.gray_counter
-	generic map (
-		width => addr_width+1,
-		init_value => 0
-		)
-	port map (
-		rst			=> rst,
-		clk			=> clk_w,
-		ce			=> winc, 
-		bcnt		=> bcnt_w,
-		bnxt		=> bnxt_w,
-		gcnt		=> gcnt_w,
-		gnxt		=> gnxt_w
-	);
-
-inst_gray_counter_r : entity work.gray_counter
-	generic map (
-		width => addr_width+1,
-		init_value => 0
-		)
-	port map (
-		rst			=> rst,
-		clk			=> clk_r,
-		ce			=> rinc, 
-		bcnt		=> bcnt_r,
-		bnxt		=> bnxt_r,
-		gcnt		=> gcnt_r,
-		gnxt		=> gnxt_r
-	);
-
-end Behavioral;
-

lib/FIFO/src/dpram.vhd

@@ -1,79 +0,0 @@
--------------------------------------------------------------------------
--- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
--- This file: Dual-ported register file with asynchrous read
-
--- 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
-
------------------------------------------------------------------------
--- $Header: /tmp/cvsroot/VHDL/lib/FIFO/src/dpram.vhd,v 1.1 2008-08-23 08:20:28 Jens Exp $
------------------------------------------------------------------------
-
-LIBRARY IEEE;
-USE IEEE.STD_LOGIC_1164.ALL;
-USE IEEE.NUMERIC_STD.ALL;
-
-entity dpram 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;
-		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 dpram;
-
-architecture Behavioral of dpram is
-
-	constant depth : integer := 2**addr_width;
-	type RAMtype is array (0 to depth-1) of unsigned (data_width-1 downto 0);
-	signal 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;
-	end if;
-end if;
-end process;
-
-process (clkb)
-begin
-if clkb'event and clkb = '1' then
-	if en_b = '1' then
-		dout_b <= RAM(to_integer(addr_b));
-	end if;
-end if;
-end process;
-
-
-end Behavioral;
-

lib/FIFO/src/fifo_async.vhd

@@ -1,113 +0,0 @@
--------------------------------------------------------------------------
--- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
--- This file: Dual-ported register file with asynchrous read
-
--- 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
-
------------------------------------------------------------------------
-
-LIBRARY IEEE;
-USE IEEE.STD_LOGIC_1164.ALL;
-USE IEEE.NUMERIC_STD.ALL;
-
-entity fifo_async is
-	Generic
-	(
-		addr_width			: natural := 4;
-		data_width			: natural := 8;
-		almost_full_thresh	: integer := 12;
-		almost_empty_thresh	: integer := 4
-	);
-	Port
-	(
-		rst			: in  STD_LOGIC;
-		clk_w		: in  STD_LOGIC;
-		clk_r		: in  STD_LOGIC;
-		we_w		: in  STD_LOGIC;
-		re_r		: in  STD_LOGIC;
-		fifo_full	: out STD_LOGIC;
-		fifo_empty	: out STD_LOGIC;
-		fifo_afull	: out STD_LOGIC;
-		fifo_aempty	: out STD_LOGIC;
-		data_w		: in  unsigned (data_width-1 downto 0);
-		data_r		: out unsigned (data_width-1 downto 0)
-	);
-end fifo_async;
-
-architecture Behavioral of fifo_async is
-	
-	signal buf_we_w		: STD_LOGIC;
-	signal ptr_w		: unsigned (addr_width-1 downto 0);
-	signal ptr_r		: unsigned (addr_width-1 downto 0);
-	signal full			: STD_LOGIC;
-	signal empty		: STD_LOGIC;
-	signal almost_full	: STD_LOGIC;
-	signal almost_empty	: STD_LOGIC;
-	
-begin
-
-	buf_we_w <= we_w;
-	fifo_full <= full;
-	fifo_empty <= empty;
-	fifo_afull <= almost_full;
-	fifo_aempty <= almost_empty;
-	
-inst_fifo_ctrl: entity work.async_fifo_ctrl
-	GENERIC MAP
-	(
-		addr_width			=> ADDR_WIDTH,
-		almost_full_thresh	=> almost_full_thresh,
-		almost_empty_thresh	=> almost_empty_thresh
-	)
-	PORT MAP
-	(
-		rst			=>	rst,
-		clk_w		=>	clk_w,
-		clk_r		=>	clk_r,
-		we			=>	we_w,
-		re			=>	re_r,
-		ptr_w		=>	ptr_w,
-		ptr_r		=>	ptr_r,
-		fifo_full	=>	full,
-		fifo_empty	=>	empty,
-		fifo_afull	=>	almost_full,
-		fifo_aempty	=>	almost_empty
-
-	);
-
-inst_dpram_1w1r: entity work.dpram_1w1r
-	GENERIC MAP
-	(
-		addr_width	=> addr_width,
-		data_width	=> data_width
-	)
-	PORT MAP(
-		clka		=> clk_w,
-		clkb		=> clk_r,
-		en_a		=> '1',
-		en_b		=> '1',
-		we_a		=> buf_we_w,
-		addr_a		=> ptr_w,
-		addr_b		=> ptr_r,
-		din_a		=> data_w,
-		dout_b		=> data_r
-	);
-
-end Behavioral;
-

lib/FIFO/src/fifo_ctrl_pkg.vhd

@@ -1,46 +0,0 @@
------------------------------------------------------------------------
--- $Header: /tmp/cvsroot/VHDL/lib/FIFO/src/fifo_ctrl_pkg.vhd,v 1.1 2008-08-23 08:20:28 Jens Exp $
------------------------------------------------------------------------
-LIBRARY IEEE;
-USE IEEE.STD_LOGIC_1164.ALL;
-USE IEEE.NUMERIC_STD.ALL;
-
-package fifo_ctrl_pkg is
-
-	-- Constants
-	-- Types
-	
-	-- Functions
-	function bin2gray(xb : unsigned) return unsigned;
-	function gray2bin(xg : unsigned) return unsigned;
-
-end fifo_ctrl_pkg;
-
-package body fifo_ctrl_pkg is
-
-	function bin2gray(xb : unsigned) return unsigned is
-	variable xg : unsigned(xb'left downto xb'right);
-	begin
-	
-    	xg(xg'left) := xb(xb'left);
-		for i in 1 to xb'left loop
-			xg(xg'left-i) := xb(xb'left-i+1) xor xb(xb'left-i);
-		end loop;
-	
-		return xg;
-	end bin2gray;
-	
-	function gray2bin(xg : unsigned) return unsigned is
-	variable xb : unsigned(xg'left downto xg'right);
-	begin
-
-     	xb(xb'left) := xg(xg'left);
-		for i in 1 to xg'left loop
-			xb(xb'left-i) := xb(xb'left-i+1) xor xg(xg'left-i);
-		end loop;
-		
-		return xb;
-	end gray2bin;
-
-end fifo_ctrl_pkg;
-

lib/FIFO/src/fifo_sync.vhd

@@ -1,119 +0,0 @@
--------------------------------------------------------------------------
--- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
--- This file: Dual-ported register file with asynchrous read
-
--- 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
-
------------------------------------------------------------------------
-
-LIBRARY IEEE;
-USE IEEE.STD_LOGIC_1164.ALL;
-USE IEEE.NUMERIC_STD.ALL;
-
-use work.fifo_ctrl_pkg.all;
-
-entity fifo_sync is
-	Generic 
-	(
-		addr_width			: natural := 4;
-		data_width			: natural := 8;
-		almost_full_thresh	: integer := 12;
-		almost_empty_thresh	: integer := 4
-	);
-	Port
-	(
-		rst			: in  STD_LOGIC;
-		clk			: in  STD_LOGIC;
-		we			: in  STD_LOGIC;
-		re			: in  STD_LOGIC;
-		fifo_full	: out STD_LOGIC;
-		fifo_empty	: out STD_LOGIC;
-		fifo_afull	: out STD_LOGIC;
-		fifo_aempty	: out STD_LOGIC;
-		data_w		: in  unsigned (data_width-1 downto 0);
-		data_r		: out unsigned (data_width-1 downto 0)
-	);
-end fifo_sync;
-
-architecture Behavioral of fifo_sync is
-	
-	signal mem_wr_en	: STD_LOGIC;
-	signal mem_rd_en	: STD_LOGIC;
-	signal ptr_w		: unsigned (addr_width-1 downto 0);
-	signal ptr_r		: unsigned (addr_width-1 downto 0);
-	signal full			: STD_LOGIC;
-	signal empty		: STD_LOGIC;
-	signal almost_full	: STD_LOGIC;
-	signal almost_empty	: STD_LOGIC;
-	signal pre_full		: STD_LOGIC;
-	signal pre_empty	: STD_LOGIC;
-	
-begin
-
-	mem_wr_en	<= not full;
-	mem_rd_en	<= not pre_empty;
-	fifo_full	<= full;
-	fifo_empty	<= empty;
-	fifo_afull	<= almost_full;
-	fifo_aempty	<= almost_empty;
-
-inst_sync_fifo_ctrl: entity work.sync_fifo_ctrl
-	GENERIC MAP
-	(
-		addr_width			=> addr_width,
-		almost_full_thresh	=> almost_full_thresh,
-		almost_empty_thresh	=> almost_empty_thresh
-	)
-	PORT MAP
-	(
-		rst				=>	rst,
-		clk				=>	clk,
-		we				=>	we,
-		re				=>	re,
-		ptr_w			=>	ptr_w,
-		ptr_r			=>	ptr_r,
-		fifo_full		=>	full,
-		fifo_empty		=>	empty,
-		fifo_pre_full	=>	pre_full,
-		fifo_pre_empty	=>	pre_empty,
-		fifo_afull		=>	almost_full,
-		fifo_aempty		=>	almost_empty
-
-	);
-
-inst_dpram_1w1r: entity work.dpram_1w1r
-	GENERIC MAP
-	(
-		addr_width	=> addr_width,
-		data_width	=> data_width
-	)
-	PORT MAP(
-		clka		=> clk,
-		clkb		=> clk,
-		en_a		=> mem_wr_en,
-		en_b		=> mem_rd_en,
-		we_a		=> we,
-		addr_a		=> ptr_w,
-		addr_b		=> ptr_r,
-		din_a		=> data_w,
-		dout_b		=> data_r
-	);
-	
-end Behavioral;
-

lib/FIFO/src/fifo_sync_dist.vhd

@@ -1,117 +0,0 @@
--------------------------------------------------------------------------
--- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
--- This file: Dual-ported register file with asynchrous read
-
--- 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
-
------------------------------------------------------------------------
-
-LIBRARY IEEE;
-USE IEEE.STD_LOGIC_1164.ALL;
-USE IEEE.NUMERIC_STD.ALL;
-
-use work.fifo_ctrl_pkg.all;
-
-entity fifo_sync_dist is
-	Generic (
-		addr_width			: natural := 4;
-		data_width			: natural := 8;
-		almost_full_thresh	: integer := 12;
-		almost_empty_thresh	: integer := 4
-	);
-	Port
-	(
-		rst			: in  STD_LOGIC;
-		clk			: in  STD_LOGIC;
-		we			: in  STD_LOGIC;
-		re			: in  STD_LOGIC;
-		fifo_full	: out STD_LOGIC;
-		fifo_empty	: out STD_LOGIC;
-		fifo_afull	: out STD_LOGIC;
-		fifo_aempty	: out STD_LOGIC;
-		data_w		: in  unsigned (data_width-1 downto 0);
-		data_r		: out unsigned (data_width-1 downto 0)
-	);
-end fifo_sync_dist;
-
-architecture Behavioral of fifo_sync_dist is
-	
-	signal mem_wr_en	: STD_LOGIC;
-	signal mem_rd_en	: STD_LOGIC;
-	signal ptr_w		: unsigned (addr_width-1 downto 0);
-	signal ptr_r		: unsigned (addr_width-1 downto 0);
-	signal full			: STD_LOGIC;
-	signal empty		: STD_LOGIC;
-	signal almost_full	: STD_LOGIC;
-	signal almost_empty	: STD_LOGIC;
-	signal pre_full		: STD_LOGIC;
-	signal pre_empty	: STD_LOGIC;
-	
-begin
-
-	mem_wr_en	<= not full;
-	mem_rd_en	<= not pre_empty;
-	fifo_full	<= full;
-	fifo_empty	<= empty;
-	fifo_afull	<= almost_full;
-	fifo_aempty	<= almost_empty;
-
-	inst_sync_fifo_ctrl: entity work.sync_fifo_ctrl
-	GENERIC MAP
-	(
-		addr_width			=> addr_width,
-		almost_full_thresh	=> almost_full_thresh,
-		almost_empty_thresh	=> almost_empty_thresh
-	)
-	PORT MAP
-	(
-		rst				=>	rst,
-		clk				=>	clk,
-		we				=>	we,
-		re				=>	re,
-		ptr_w			=>	ptr_w,
-		ptr_r			=>	ptr_r,
-		fifo_full		=>	full,
-		fifo_empty		=>	empty,
-		fifo_pre_full	=>	pre_full,
-		fifo_pre_empty	=>	pre_empty,
-		fifo_afull		=>	almost_full,
-		fifo_aempty		=>	almost_empty
-
-	);
-
-	inst_dpram_1w1r: entity work.dpram_1w1r_dist
-	GENERIC MAP (
-		addr_width	=> addr_width,
-		data_width	=> data_width
-	)
-	PORT MAP(
-		clka		=> clk,
-		clkb		=> clk,
-		en_a		=> mem_wr_en,
-		en_b		=> mem_rd_en,
-		we_a		=> we,
-		addr_a		=> ptr_w,
-		addr_b		=> ptr_r,
-		din_a		=> data_w,
-		dout_b		=> data_r
-	);
-	
-end Behavioral;
-

lib/FIFO/src/gray_counter.vhd

@@ -1,88 +0,0 @@
--------------------------------------------------------------------------
--- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
--- This file: The call/return/data stack
-
--- 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
-
------------------------------------------------------------------------
--- $Header: /tmp/cvsroot/VHDL/lib/FIFO/src/gray_counter.vhd,v 1.1 2008-08-23 08:20:28 Jens Exp $
------------------------------------------------------------------------
-
-library IEEE;
-use IEEE.STD_LOGIC_1164.ALL;
-use IEEE.numeric_std.ALL;
-
-LIBRARY WORK;
-USE WORK.FIFO_CTRL_PKG.ALL;
-
-entity gray_counter is
-	Generic (
-		width : natural := 3;
-		init_value : natural := 0
-	);
-	Port
-	(
-		rst			: in  STD_LOGIC;
-		clk			: in  STD_LOGIC;
-		ce			: in  STD_LOGIC;
-		bcnt		: out unsigned (width-1 downto 0);
-		bnxt		: out unsigned (width-1 downto 0);
-		gcnt		: out unsigned (width-1 downto 0);
-		gnxt		: out unsigned (width-1 downto 0)
-	);
-end gray_counter;
-
-architecture Behavioral of gray_counter is
-
-	signal cntb : unsigned (width-1 downto 0);
-	signal nxtb : unsigned (width-1 downto 0);
-	signal cntg : unsigned (width-1 downto 0);
-	signal nxtg : unsigned (width-1 downto 0);
-
-begin
-
-	bnxt	<= nxtb;
-	gnxt	<= nxtg;
-
-	process(rst, clk, ce, cntb, nxtb)
-	begin
-		if rst = '1' then
-			cntb	<= to_unsigned(init_value, width);
-			nxtb	<= to_unsigned(init_value, width);
-			cntg	<= to_unsigned(init_value, width);
-			nxtg	<= to_unsigned(init_value, width);
-			bcnt	<= to_unsigned(init_value, width);
-			gcnt	<= to_unsigned(init_value, width);
-		else
-			if rising_edge(clk) then
-				bcnt	<= nxtb;
-				gcnt	<= nxtg;
-				cntb	<= nxtb;
-				cntg	<= nxtg;
-			end if;	
-			nxtg <= bin2gray(nxtb);
-			nxtb <= cntb;
-			if ce = '1' then
-				nxtb <= cntb + 1;
-			end if;	
-		end if;	
-	end process;
-
-end Behavioral;
-

lib/FIFO/src/sync_fifo_ctrl.vhd

@@ -1,203 +0,0 @@
--------------------------------------------------------------------------
--- Project: JCPU, a portable 8-bit RISC CPU written in VHDL
--- This file: The call/return/data stack
-
--- 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
-
------------------------------------------------------------------------
--- $Header: /tmp/cvsroot/VHDL/lib/FIFO/src/sync_fifo_ctrl.vhd,v 1.2 2008-10-12 18:04:36 Jens Exp $
------------------------------------------------------------------------
-
-library IEEE;
-use IEEE.STD_LOGIC_1164.ALL;
-use IEEE.numeric_std.ALL;
-
-entity sync_fifo_ctrl is
-	Generic (
-		addr_width : integer := 3;
-		almost_full_thresh : integer := 6;
-		almost_empty_thresh : integer := 2
-	);
-	Port
-	(
-		rst				: in  STD_LOGIC;
-		clk				: in  STD_LOGIC;
-		we				: in  STD_LOGIC;
-		re				: in  STD_LOGIC;
-		ptr_w			: out unsigned (addr_width-1 downto 0);
-		ptr_r			: out unsigned (addr_width-1 downto 0);
-		fifo_pre_full	: out STD_LOGIC;
-		fifo_pre_empty	: out STD_LOGIC;
-		fifo_full		: out STD_LOGIC;
-		fifo_empty		: out STD_LOGIC;
-		fifo_afull		: out STD_LOGIC;
-		fifo_aempty		: out STD_LOGIC
-	);
-end sync_fifo_ctrl;
-
-architecture Behavioral of sync_fifo_ctrl is
-
-	signal pW, pW_cnt, pW_next : unsigned (addr_width-1 downto 0);
-	signal pR, pR_cnt, pR_next : unsigned (addr_width-1 downto 0);
-	signal empty, full : std_logic;
-	signal pre_empty, pre_full : std_logic;
-	signal was_write : std_logic;
-	signal write, read : std_logic;
-	signal diff : unsigned (addr_width downto 0);
-	
-begin
-
-	read	<= re and not empty;
-	write	<= we and not full;
-
-	fifo_full		<= full;
-	fifo_empty		<= empty;
-	fifo_pre_full	<= pre_full;
-	fifo_pre_empty	<= pre_empty;
-
-
-proc_diff_gen:
-	process(rst, clk)
-	begin
-		if rst = '1' then
-			diff <= (others => '0');
-		elsif rising_edge(clk) then
-			if write = '1' and read = '0' then
-				diff <= diff + 1;
-			elsif write = '0' and read = '1' then
-				diff <= diff - 1;
-			end if;
-		end if;
-	end process;
-
-proc_status_almost_full:
-	process(rst, clk)
-	begin
-		if rst = '1' then
-			fifo_afull <= '0';
-		elsif rising_edge(clk) then
-			if diff >= almost_full_thresh-1 then
-				fifo_afull <= '1';
-			else
-				fifo_afull <= '0';
-			end if;	
-		end if;
-	end process;
-
-proc_status_almost_empty:
-	process(rst, clk)
-	begin
-		if rst = '1' then
-			fifo_aempty <= '1';
-		elsif rising_edge(clk) then
-			if diff <= almost_empty_thresh+1 then
-				fifo_aempty <= '1';
-			else
-				fifo_aempty <= '0';
-			end if;	
-		end if;
-	end process;
-
-proc_full_reg:
-	process(rst, clk)
-	begin
-		if rst = '1' then
-			full <= '0';
-		elsif rising_edge(clk) then
-			full <= pre_full;
-		end if;
-	end process;
-	
-proc_empty_reg:
-	process(rst, clk)
-	begin
-		if rst = '1' then
-			empty <= '1';
-		elsif rising_edge(clk) then
-			empty <= pre_empty;
-		end if;
-	end process;
-	
-proc_status_w:
-	process(was_write, pW_next, pR_next, pW, pR, write, read)
-	begin
-		if (pW_next = pR) and (write = '1' or was_write = '1') then
-			pre_full <= '1';
-		else
-			pre_full <= '0';
-		end if;
-		if (pR_next = pW) and (read = '1' or was_write = '0') then
-			pre_empty <= '1';
-		else
-			pre_empty <= '0';
-		end if;
-	end process;
-
-proc_flag_write:
-	process(rst, clk)
-	begin
-		if rst = '1' then
-			was_write <= '0';
-		elsif rising_edge(clk) then
-			if write = '1' then
-				was_write <= '1';
-			elsif read = '1' then
-				was_write <= '0';
-			end if;
-		end if;
-	end process;
-	
-proc_ptr_w:
-	process(rst, clk, pW, write, full)
-	begin
-		if rst = '1' then
-			pW <= to_unsigned(0, addr_width);
-			pW_next <= to_unsigned(0, addr_width);
-		elsif rising_edge(clk) then
-			if write = '1' then 
-				pW <= pW_next;
-			end if;
-		end if;
-		pW_next <= pW;
-		if write = '1' then 
-			pW_next <= pW + 1;
-		end if;
-		ptr_w		<= pW;
-	end process;
-
-proc_ptr_r:
-	process(rst, clk, pR_next, pR, read, empty)
-	begin
-		if rst = '1' then
-			pR <= to_unsigned(0, addr_width);
-			pR_next <= to_unsigned(0, addr_width);
-		elsif rising_edge(clk) then
-			if read = '1' then
-				pR <= pR_next;
-			end if;	
-		end if;
-		pR_next	<= pR;
-		if read = '1' then
-			pR_next	<= pR + 1;
-		end if;
-		ptr_r		<= pR_next;
-	end process;
-
-end Behavioral;
-

lib/FIFO/src/tb_async_fifo_ctrl.vhd

@@ -1,176 +0,0 @@
---------------------------------------------------------------------------------
--- Company: 
--- Engineer:
---
--- Create Date:   17:16:42 13.05.2007
--- Design Name:   tb_nco
--- Module Name:   tb_nco.vhd
--- Project Name:  nco
--- Target Device:  
--- Tool versions:  
--- Description:   
--- 
------------------------------------------------------------------------
--- $Header: /tmp/cvsroot/VHDL/lib/FIFO/src/tb_async_fifo_ctrl.vhd,v 1.1 2008-08-23 08:20:28 Jens Exp $
------------------------------------------------------------------------
-LIBRARY IEEE;
-USE IEEE.STD_LOGIC_1164.ALL;
-USE IEEE.MATH_REAL.ALL;
-USE IEEE.NUMERIC_STD.ALL;
-USE STD.TEXTIO.ALL;
-
--- LIBRARY WORK;
--- USE.YOURLIB.WHATELSE
-
-ENTITY tb_async_fifo_ctrl IS
-END tb_async_fifo_ctrl;
-
-ARCHITECTURE behavior OF tb_async_fifo_ctrl IS 
-
-	--Constants
-	constant PERIOD_W 	: time := 10 ns;
-	constant PERIOD_R 	: time := 20 ns;
-	constant ADDR_WIDTH : integer := 3;
-
-	--Inputs
-	signal rst					: STD_LOGIC := '1';
-	signal clk_w				: STD_LOGIC := '0';
-	signal clk_r				: STD_LOGIC := '0';
-	signal we					: STD_LOGIC := '0';
-	signal re					: STD_LOGIC := '0';
-	signal din					: unsigned (7 downto 0);
-	--Outputs
-
-	signal ptr_w				: unsigned (ADDR_WIDTH-1 downto 0);
-	signal ptr_r				: unsigned (ADDR_WIDTH-1 downto 0);
-	signal dout					: unsigned (7 downto 0);
-	signal fifo_full			: STD_LOGIC;
-	signal fifo_empty			: STD_LOGIC;
-	signal fifo_almost_full		: STD_LOGIC;
-	signal fifo_almost_empty	: STD_LOGIC;
-	signal mem_we				: STD_LOGIC;
-
-	signal write_en				: STD_LOGIC := '0';
-	signal read_en				: STD_LOGIC := '0';
-
-	signal wdata				: unsigned (7 downto 0) := (others => '0');
-	signal rdata				: unsigned (7 downto 0) := (others => '0');
-	signal rdata2				: unsigned (7 downto 0) := (others => '0');
-
-BEGIN
-
-	din <= wdata;
-	
-	-- Instantiate the Unit Under Test (UUT)
-	uut: entity work.async_fifo_ctrl
-	GENERIC MAP
-	(
-		addr_width			=> ADDR_WIDTH,
-		almost_full_thresh	=> 6,
-		almost_empty_thresh	=> 2
-	)
-	PORT MAP
-	(
-		rst			=>	rst,
-		clk_w		=>	clk_w,
-		clk_r		=>	clk_r,
-		we			=>	we,
-		re			=>	re,
-		ptr_w		=>	ptr_w,
-		ptr_r		=>	ptr_r,
-		fifo_full	=>	fifo_full,
-		fifo_empty	=>	fifo_empty,
-		fifo_afull	=>	fifo_almost_full,
-		fifo_aempty	=>	fifo_almost_empty
-
-	);
-
-	inst_dpram: entity work.dpram
-	GENERIC MAP (
-		addr_width	=> ADDR_WIDTH,
-		data_width	=> 8
-	)
-	PORT MAP(
-		clka		=> clk_w,
-		clkb		=> clk_r,
-		en_a		=> '1',
-		en_b		=> '1',
-		we_a		=> mem_we,
-		addr_a		=> ptr_w,
-		addr_b		=> ptr_r,
-		din_a		=> din,
-		dout_b		=> dout
-	);
-
- 	tb_clk_w : PROCESS
-	BEGIN
-		clk_w <= not clk_w;
-		wait for PERIOD_W/2;
-	END PROCESS;
-
- 	tb_clk_r : PROCESS
-	BEGIN
-		clk_r <= not clk_r;
-		wait for PERIOD_R/2;
-	END PROCESS;
-
- 	tb_write : PROCESS
-	BEGIN
-
-		-- Wait 100 ns for global reset to finish
-		wait for 5*PERIOD_W;
-		rst			<= '0';
-		wait for 5*PERIOD_W;
-		write_en <= '1';
-		wait for 15*PERIOD_W;
-		write_en <= '0';
-		
-		wait; 
-		
-	END PROCESS;
-
- 	tb_read : PROCESS
-	BEGIN
-
-		-- Wait 100 ns for global reset to finish
-		wait for 15*PERIOD_R;
-		read_en <= '1';
-		
-		wait; 
-		
-	END PROCESS;
-	
-	we <= write_en and not fifo_full;
-	mem_we <= we;
-	
- 	tb_w : PROCESS(rst, clk_w)
-	BEGIN
-
-		if rst = '1' then
-			wdata <= (others => '0');
-		elsif rising_edge(clk_w) then
-			if we = '1' then
-				wdata <= wdata + 1;
-			end if;				
-		end if;	
-
-	END PROCESS;
-	
-	re	<= read_en and not fifo_empty;
-	
- 	tb_r : PROCESS(rst, clk_r)
-	BEGIN
-
-		if rst = '1' then
-			rdata <= (others => '0');
-		elsif rising_edge(clk_r) then
-			rdata2 <= rdata;
-			if re = '1' then
-				assert rdata2 = dout report "FIFO read error!" severity failure;
-				rdata <= rdata + 1;
-			end if;				
-		end if;	
-		
-	END PROCESS;
-
-END behavior;

lib/FIFO/src/tb_gray_counter.vhd

@@ -1,83 +0,0 @@
---------------------------------------------------------------------------------
--- Company: 
--- Engineer:
---
--- Create Date:   17:16:42 13.05.2007
--- Design Name:   tb_gray_counter
--- Module Name:   tb_gray_counter.vhd
--- Project Name:  gray_counter package
--- Target Device:  
--- Tool versions:  
--- Description:   
--- 
------------------------------------------------------------------------
--- $Header: /tmp/cvsroot/VHDL/lib/FIFO/src/tb_gray_counter.vhd,v 1.1 2008-08-23 08:20:28 Jens Exp $
------------------------------------------------------------------------
-LIBRARY IEEE;
-USE IEEE.STD_LOGIC_1164.ALL;
-USE IEEE.MATH_REAL.ALL;
-USE IEEE.NUMERIC_STD.ALL;
-USE STD.TEXTIO.ALL;
-
-LIBRARY WORK;
-USE WORK.FIFO_CTRL_PKG.ALL;
-
-ENTITY tb_gray_counter IS
-END tb_gray_counter;
-
-ARCHITECTURE behavior OF tb_gray_counter IS 
-
-	constant PERIOD		: time := 10 ns;
-	constant WIDTH		: integer := 3;
-
-	--Signals
-	signal gcnt			: unsigned (WIDTH-1 downto 0) := to_unsigned(0, WIDTH);
-	signal bcnt			: unsigned (WIDTH-1 downto 0) := to_unsigned(0, WIDTH);
-	signal gnxt			: unsigned (WIDTH-1 downto 0) := to_unsigned(0, WIDTH);
-	signal bnxt			: unsigned (WIDTH-1 downto 0) := to_unsigned(0, WIDTH);
-	signal rst			: STD_LOGIC := '1';
-	signal clk			: STD_LOGIC := '0';
-	signal ce			: STD_LOGIC := '0';
-
-BEGIN
-
-inst_gray_counter : entity work.gray_counter
-	generic map (width => WIDTH)
-	port map (
-		rst			=> rst,
-		clk			=> clk,
-		ce			=> ce, 
-		bcnt		=> bcnt,
-		bnxt		=> bnxt,
-		gcnt		=> gcnt,
-		gnxt		=> gnxt
-	);
-
- 	tb_clk : PROCESS
-	BEGIN
-		clk <= not clk;
-		wait for PERIOD/2;
-	END PROCESS;
-
- 	tb_counter : PROCESS
- 	
-	BEGIN
-
-		wait for 4*PERIOD;
-		rst <= '0';
-		wait for 1*PERIOD;
-		ce <= '1';
-		wait for 3*PERIOD;
-		ce <= '0';
-		wait for 4*PERIOD;
-		ce <= '1';
-		wait for 1*PERIOD;
-		ce <= '0';
-		wait for 1*PERIOD;
-		ce <= '1';
-		
-		wait;
-		
-	END PROCESS;
-
-END behavior;

lib/FIFO/src/tb_sync_fifo_ctrl.vhd

@@ -1,221 +0,0 @@
---------------------------------------------------------------------------------
--- Company: 
--- Engineer:
---
--- Create Date:   17:16:42 13.05.2007
--- Design Name:   tb_nco
--- Module Name:   tb_nco.vhd
--- Project Name:  nco
--- Target Device:  
--- Tool versions:  
--- Description:   
--- 
------------------------------------------------------------------------
--- $Header: /tmp/cvsroot/VHDL/lib/FIFO/src/tb_sync_fifo_ctrl.vhd,v 1.1 2008-08-23 08:20:28 Jens Exp $
------------------------------------------------------------------------
-LIBRARY IEEE;
-USE IEEE.STD_LOGIC_1164.ALL;
-USE IEEE.MATH_REAL.ALL;
-USE IEEE.NUMERIC_STD.ALL;
-USE STD.TEXTIO.ALL;
-
--- LIBRARY WORK;
--- USE.YOURLIB.WHATELSE
-
-ENTITY tb_sync_fifo_ctrl IS
-END tb_sync_fifo_ctrl;
-
-ARCHITECTURE behavior OF tb_sync_fifo_ctrl IS 
-
-	--Constants
-	constant PERIOD 	: time := 10 ns;
-	constant ADDR_WIDTH : integer := 3;
-
-	--Inputs
-	signal rst					: STD_LOGIC := '1';
-	signal clk					: STD_LOGIC := '0';
-	signal we					: STD_LOGIC := '0';
-	signal re					: STD_LOGIC := '0';
-	signal din					: unsigned (7 downto 0);
-	--Outputs
-
-	signal ptr_w				: unsigned (ADDR_WIDTH-1 downto 0);
-	signal ptr_r				: unsigned (ADDR_WIDTH-1 downto 0);
-	signal dout					: unsigned (7 downto 0);
-	signal fifo_full			: STD_LOGIC;
-	signal fifo_empty			: STD_LOGIC;
-	signal fifo_almost_full		: STD_LOGIC;
-	signal fifo_almost_empty	: STD_LOGIC;
-	signal mem_we				: STD_LOGIC;
-
-	signal write_en				: STD_LOGIC := '0';
-	signal read_en				: STD_LOGIC := '0';
-
-	signal wdata				: unsigned (7 downto 0) := (others => '0');
-	signal rdata				: unsigned (7 downto 0) := (others => '0');
-	signal rdata2				: unsigned (7 downto 0) := (others => '0');
-
-BEGIN
-
-	din <= wdata;
-	
-	-- Instantiate the Unit Under Test (UUT)
-	uut: entity work.sync_fifo_ctrl
-	GENERIC MAP
-	(
-		addr_width			=> ADDR_WIDTH,
-		almost_full_thresh	=> 6,
-		almost_empty_thresh	=> 2
-	)
-	PORT MAP
-	(
-		rst			=>	rst,
-		clk			=>	clk,
-		we			=>	we,
-		re			=>	re,
-		ptr_w		=>	ptr_w,
-		ptr_r		=>	ptr_r,
-		fifo_full	=>	fifo_full,
-		fifo_empty	=>	fifo_empty,
-		fifo_afull	=>	fifo_almost_full,
-		fifo_aempty	=>	fifo_almost_empty
-
-	);
-
-	inst_dpram: entity work.dpram
-	GENERIC MAP (
-		addr_width	=> ADDR_WIDTH,
-		data_width	=> 8
-	)
-	PORT MAP(
-		clka		=> clk,
-		clkb		=> clk,
-		en_a		=> '1',
-		en_b		=> '1',
-		we_a		=> mem_we,
-		addr_a		=> ptr_w,
-		addr_b		=> ptr_r,
-		din_a		=> din,
-		dout_b		=> dout
-	);
-
- 	tb_clk : PROCESS
-	BEGIN
-		clk <= not clk;
-		wait for PERIOD/2;
-	END PROCESS;
-
- 	tb_write : PROCESS
-	BEGIN
-
-		-- Wait 100 ns for global reset to finish
-		wait for 5*PERIOD;
-		rst			<= '0';
-		wait for 7*PERIOD;
-		write_en <= '1';
-		wait for 25*PERIOD;
-		write_en <= '0';
-		wait for 7*PERIOD;
-		write_en <= '1';
-		wait for 25*PERIOD;
-		write_en <= '0';
-		wait for 7*PERIOD;
-		write_en <= '1';
-		wait for 1*PERIOD;
-		write_en <= '0';
-		wait for 1*PERIOD;
-		write_en <= '1';
-		wait for 1*PERIOD;
-		write_en <= '0';
-		wait for 3*PERIOD;
-		write_en <= '1';
-		wait for 4*PERIOD;
-		write_en <= '0';
-		wait for 17*PERIOD;
-		write_en <= '1';
-		wait for 25*PERIOD;
-		write_en <= '0';
-		
-		wait; 
-		
-	END PROCESS;
-
- 	tb_read : PROCESS
-	BEGIN
-
-		-- Wait 100 ns for global reset to finish
-		wait for 25*PERIOD;
-		read_en <= '1';
-		wait for 25*PERIOD;
-		read_en <= '0';
-		wait for 25*PERIOD;
-		read_en <= '1';
-		wait for 1*PERIOD;
-		read_en <= '0';
-		wait for 5*PERIOD;
-		read_en <= '1';
-		wait for 1*PERIOD;
-		read_en <= '0';
-		wait for 5*PERIOD;
-		read_en <= '1';
-		wait for 1*PERIOD;
-		read_en <= '0';
-		wait for 5*PERIOD;
-		read_en <= '1';
-		wait for 1*PERIOD;
-		read_en <= '0';
-		wait for 5*PERIOD;
-		read_en <= '1';
-		wait for 1*PERIOD;
-		read_en <= '0';
-		wait for 5*PERIOD;
-		read_en <= '1';
-		wait for 1*PERIOD;
-		read_en <= '0';
-		wait for 5*PERIOD;
-		read_en <= '1';
-		wait for 1*PERIOD;
-		read_en <= '0';
-		wait for 7*PERIOD;
-		read_en <= '1';
-		wait for 15*PERIOD;
-		read_en <= '0';
-		
-		wait; 
-		
-	END PROCESS;
-
-	we <= write_en and not fifo_full;
-	mem_we <= we;
-
- 	tb_w : PROCESS(rst, clk)
-	BEGIN
-
-		if rst = '1' then
-			wdata <= (others => '0');
-		elsif rising_edge(clk) then
-			if we = '1' then
-				wdata <= wdata + 1;
-			end if;				
-		end if;	
-
-	END PROCESS;
-	
-	re	<= read_en and not fifo_empty;
-
- 	tb_r : PROCESS(rst, clk)
-	BEGIN
-
-		if rst = '1' then
-			rdata <= (others => '0');
-		elsif rising_edge(clk) then
-			rdata2 <= rdata;
-			if re = '1' then
-				assert rdata = dout report "FIFO read error!" severity failure;
-				rdata <= rdata + 1;
-			end if;				
-		end if;	
-		
-	END PROCESS;
-
-END behavior;

lib/PCK_FIO-1.16/PCK_FIO.html

@@ -1,297 +0,0 @@
-<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
-<html>
-<head>
-   <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
-   <meta name="GENERATOR" content="Mozilla/4.5 [en] (X11; I; SunOS 5.7 sun4u) [Netscape]">
-   <title>VHDL package for formatted file output</title>
-<!-- $Id: PCK_FIO.html,v 1.1 2008-08-23 08:20:28 Jens Exp $ -->
-</head>
-<body text="#000000" bgcolor="#FFFFFF" link="#0000EE" vlink="#551A8B" alink="#FF0000">
-
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_name_0"></a>Name</h1>
-<b>PCK_FIO</b> - VHDL package for&nbsp; formatted file output
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-Contents</h1>
-<a href="#PCK_FIO_usage_0">Usage</a>
-<br><a href="#PCK_FIO_file_0">The file output function 'fo'</a>
-<br><a href="#PCK_FIO_format_0">Format specifiers</a>
-<br><a href="#PCK_FIO_special_0">Special characters</a>
-<br><a href="#PCK_FIO_things_0">Things to watch out for</a>
-<br><a href="#PCK_FIO_methodology_0">Methodology notes</a>
-<br><a href="#PCK_FIO_parametrization_0">Parametrization</a>
-<br><a href="#PCK_FIO_test_0">Test bench</a>
-<br><a href="#PCK_FIO_limitations_0">Known limitations and problems</a>
-<br><a href="#PCK_FIO_author_0">Author</a>
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_usage_0"></a>Usage</h1>
-PCK_FIO is a VHDL package that defines&nbsp; <tt>fprint, </tt>a function
-for formatted file output.
-<p>After installing the package you can call <tt>fprint</tt> as follows:
-<pre>&nbsp; fprint(F, L, Format, fo(Expr_1), fo(Expr_2), ... fo(Expr_n));</pre>
-where F is the filehandle and L is the line variable.
-<p>The argument Format is the format string, which consists of ``normal''
-substrings which are copied verbatim, and format specifiers, starting with
-<tt>'%'</tt>.
-A typical format string looks as follows:
-<pre>&nbsp;&nbsp; "Arg1 = %6r, Arg2 = %10d, Arg3 = %-5r\n"</pre>
-The remaining arguments are the expressions whose results you want to write
-to the file, embedded in <tt>fo</tt> function calls. There can be 0 to
-32 of such arguments. The expressions can be of any type for which an <tt>fo</tt>
-function exists. String expressions can also be called directly.
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_file_0"></a>The file output function <tt>'fo'</tt></h1>
-The <tt>fo</tt> (<u>f</u>ile <u>o</u>utput) functions do the trick. They
-return a tagged string representation that is meaningful to format specifiers.
-Here are some examples:
-<pre>&nbsp; fo (signed'("1100"))&nbsp;&nbsp; returns "S:1100"&nbsp;
-&nbsp; fo (unsigned'("1100")) returns "U:1100"&nbsp;
-&nbsp; fo (TRUE)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; returns "L:T"
-&nbsp; fo (127)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; returns "I:127"</pre>
-The internal behavior of <tt>fo</tt> is irrelevant to the typical user.
-<p>The <tt>fo</tt> function is currently overloaded as follows:
-<pre>&nbsp; function fo (Arg: unsigned)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: signed)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: std_logic_vector)&nbsp; return string;
-&nbsp; function fo (Arg: std_ulogic_vector) return string;
-&nbsp; function fo (Arg: bit_vector)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: integer)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: std_ulogic)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: bit)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: boolean)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;&nbsp;
-&nbsp; function fo (Arg: character)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: string)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: time)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;</pre>
-
-<pre>
-<hr SIZE=1 NOSHADE WIDTH="100%"></pre>
-
-<h1>
-<a NAME="PCK_FIO_format_0"></a>Format specifiers</h1>
-The general format of a format specifier is:
-<pre>&nbsp;&nbsp; %[-][n]c</pre>
-The optional <b>-</b> sign specifies left justified output; default is
-right justified.
-<p>The optional number <b>n</b> specifies a field-width. If it is not specified,
-<tt>fprint</tt>
-does something reasonable.
-<p><b>c</b> is the conversion specifier. Currently the following conversion
-specifiers are supported:
-<dl COMPACT>
-<dt>
-<a NAME="PCK_FIO_r_0"></a><b>r</b></dt>
-
-<dd>
-reasonable output format (inspired by Synopsys VSS)</dd>
-
-<dl COMPACT>Prints the ``most reasonable'' representation e.g. hex for
-unsigned, signed and other bit-like vectors (not preferred for integers)</dl>
-
-<dt>
-<a NAME="PCK_FIO_b_0"></a><b>b</b></dt>
-
-<dd>
-bit-oriented output</dd>
-
-<dt>
-<a NAME="PCK_FIO_d_0"></a><b>d</b></dt>
-
-<dd>
-decimal output</dd>
-
-<dt>
-<a NAME="PCK_FIO_s_0"></a><b>s</b></dt>
-
-<dd>
-string output (e.g. in combination with 'IMAGE for enum types)</dd>
-
-<dt>
-<a NAME="PCK_FIO_q_0"></a><b>q</b></dt>
-
-<dd>
-``qualified'' string output (shows internal representation from <tt>fo</tt>)</dd>
-
-<dt>
-<a NAME="PCK_FIO__0"></a><b>{}</b></dt>
-
-<dd>
-Iteration operator, used as follows:</dd>
-
-<dd>
-<tt>%n{&lt;format-string>}</tt></dd>
-
-<br>In this case, <b>n</b> is the iteration count and is mandatory. Iteration
-can be nested.</dl>
-
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_special_0"></a>Special characters</h1>
-To print a double-quote,&nbsp; use <tt>'""'</tt> in the format string (VHDL
-convention). To print the special characters, <tt>'\'</tt>, and <tt>'%'</tt>,
-escape them with <tt>'\'</tt>. To prevent <tt>'{'</tt> and <tt>'}'</tt>
-from being interpreted as opening and closing brackets in iteration strings,
-escape them with <tt>'\'</tt>.
-<p>A newline is specified in the format string by <tt>'\n'</tt>.
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_things_0"></a>Things to notice</h1>
-The fprint function expands into VHDL <tt>write</tt> and <tt>writeline</tt>
-commands. As in plain VHDL, nothing will be written to the output file
-until a <tt>writeline</tt> is given. Therefore, don't forget to include
-<tt>'\n'</tt>
-commands in the format string, or it ``will not work''.
-<p>The preferred format specifier for integers is, naturally, <b>%d</b>.
-This calls the VHDL <tt>write</tt> for integers. If you specify a field
-width that is too small, the field will automatically be expanded. If you
-use <b>%r</b> for integers, the field is not expanded automatically, which
-means that some digits are simply thrown away. This may sometimes be useful
-but it is also dangerous. Look at the test bench output for differences
-between <b>%d</b> and <b>%r</b> output.
-<p>When using the <b>%d</b> format specifier, the VHDL constraints for
-the allowed integer range apply.
-<p>In VHDL, signed/unsigned types have been standardized only relatively
-recently, in the package <tt>IEEE.numeric_std</tt>. The lack of a standard
-has caused (and is causing) portability issues. The most popular non-standard
-package that defines signed/unsigned is <tt>IEEE.std_logic_arith</tt> from
-Synopsys. PCK_FIO has been developed with this latter package, and still
-refers to this package by default. However, PCK_FIO&nbsp; works with
-<tt>IEEE.numeric_std</tt>
-as well. To use <tt>IEEE.numeric_std</tt>, replace the reference to <tt>IEEE.std_logic_arith</tt>
-in the source code.&nbsp; This needs to be done consistently in a design
-database (e.g. in the PCK_FIO test bench as well).
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_methodology_0"></a>Methodology notes</h1>
-The obvious application for <tt>fprint</tt> is in test benches, to produce
-output files that trace the simulation behavior.
-<p>Another interesting application for <tt>fprint</tt> is to produce info,
-warning and error messages in your models. As it can take arguments, <tt>fprint</tt>
-is much better suited for this task than VHDL's <tt>assert</tt> or <tt>report</tt>
-statements. Actually <tt>fprint</tt> produces its own (few) warning messages.
-<p>An advanced usage is the generation of test vectors in a specific format.
-Instead of using the <tt>fo </tt>functions, you can write your own set
-of functions that return the symbols of a specific test format in a way
-that is understandable to the <tt>fprint</tt> format specifiers. As an
-example, when a high output value should be represented using the symbol
-'H' it suffices to write a conversion function that returns "B:H" and call
-it in combination with the <b>%b</b> format specifier.
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_parametrization_0"></a>Parametrization</h1>
-Prefix and postfix strings for bit-oriented and hex-oriented output are
-parameterizable in the packages to accommodate different output styles.
-The settings in the distribution are such that hex output is indicated
-by the prefix '0x', while&nbsp; bit output prefix and postfix are empty
-strings.
-<p>You can adapt the output style by modifying the following constants
-in the package header:
-<p>&nbsp;&nbsp;<tt> -- prefix string for hex output</tt>
-<br><tt>&nbsp; -- VHDL style:&nbsp;&nbsp;&nbsp; "X"""</tt>
-<br><tt>&nbsp; -- Verilog style: "h'"</tt>
-<br><tt>&nbsp; -- C style:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; "0x"</tt>
-<br><tt>&nbsp; constant FIO_h_PRE:&nbsp; string := "0x";</tt>
-<p><tt>&nbsp; -- postfix string for hex output</tt>
-<br><tt>&nbsp; -- VHDL style:&nbsp;&nbsp;&nbsp; """"</tt>
-<br><tt>&nbsp; constant FIO_h_POST: string := "";</tt>
-<p><tt>&nbsp; -- prefix string for bit vector output</tt>
-<br><tt>&nbsp; -- VHDL style:&nbsp;&nbsp;&nbsp; "B"""</tt>
-<br><tt>&nbsp; -- Verilog style: "b'"</tt>
-<br><tt>&nbsp; constant FIO_bv_PRE:&nbsp; string := "";</tt>
-<p><tt>&nbsp; -- postfix string for bit vector output</tt>
-<br><tt>&nbsp; -- VHDL style:&nbsp;&nbsp;&nbsp; """"</tt>
-<br><tt>&nbsp; constant FIO_bv_POST: string := "";</tt>
-<p><tt>&nbsp; -- prefix string for bit output</tt>
-<br><tt>&nbsp; -- VHDL style:&nbsp;&nbsp;&nbsp; "'"</tt>
-<br><tt>&nbsp; -- Verilog style: "b'"</tt>
-<br><tt>&nbsp; constant FIO_b_PRE:&nbsp; string := "";</tt>
-<p><tt>&nbsp; -- postfix string for bit output</tt>
-<br><tt>&nbsp; -- VHDL style:&nbsp;&nbsp;&nbsp; "'"</tt>
-<br><tt>&nbsp; constant FIO_b_POST: string := "";</tt>
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_test_0"></a>Test bench</h1>
-Included in the distribution is a file <tt>TB_PCK_FIO.vhd</tt> with a test
-bench for the PCK_FIO package. The file <tt>PCK_FIO.out.gold </tt>contains
-the expected output. If you run the test bench it should produce the file
-<tt>PCK_FIO.out</tt>
-that should be identical to <tt>PCK_FIO.out.gold</tt>. The source files
-should be analyzed in a VHDL library <tt>EASICS_PACKAGES</tt>.
-<p>A good way to understand <tt>fprint</tt> is to inspect the test bench
-and what it produces.
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_limitations_0"></a>Known limitations and problems</h1>
-This VHDL package is an implementation of a flexible concept. It is likely
-to be extended and modified in the future. Backward compatibility is not
-guaranteed. Therefore, it is not recommended to give this package the status
-of a company-wide standard package (or even worse, a VHDL standard package).
-Rather, it should be linked with a particular project (and it can be regarded
-as a standard package within that project).
-<p>PCK_FIO is written in standard VHDL Std1076-1987. Nevertheless, some
-simulators/versions have problems with the package. The following is an
-overview of currently known issues:
-<br>&nbsp;
-<center><table BORDER COLS=2 WIDTH="80%" >
-<tr>
-<th>Simulator</th>
-
-<th>PCK_FIO handling</th>
-</tr>
-
-<tr>
-<td>Synopsys VSS 3.5 and earlier</td>
-
-<td>Incorrect (all zero) output in compiled mode</td>
-</tr>
-
-<tr>
-<td>Synopsys VSS 97.01</td>
-
-<td>OK</td>
-</tr>
-
-<tr>
-<td>Mentor quickhdl</td>
-
-<td>OK</td>
-</tr>
-
-<tr>
-<td>Modeltech modelsim</td>
-
-<td>OK</td>
-</tr>
-
-<tr>
-<td>Cadence Leapfrog</td>
-
-<td>Should work with 4.4.1
-<br>Mysterious problems have been reported - please run the test bench
-and report problems</td>
-</tr>
-
-<caption ALIGN=BOTTOM>PCK_FIO and various simulators/versions</caption>
-</table></center>
-
-<p>Although the package name suggests file IO, it only does file output.
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_author_0"></a>Author</h1>
-<a href="mailto:jand@easics.be">Jan Decaluwe</a>
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-</body>
-</html>

lib/PCK_FIO-1.16/PCK_FIO.out.gold

@@ -1,206 +0,0 @@
-PCK_FIO.out: TESTBENCH OUTPUT FOR PCK_FIO
------------------------------------------
-
-This is the result of running the PCK_FIO testbench.
-This file should be compared with PCK_FIO.out.gold, which is
-the reference output. Any difference indicates a portability
-issue or a simulator non-compliance or bug.
-
-
---------------------
--- Basic features --
---------------------
-
--- First some auxiliary declarations
-> file     RESULT:    text is out "PCK_FIO.out";
-> variable L:         line;
-> variable BoolTrue:  boolean := TRUE;
-> variable BoolFalse: boolean := FALSE;
-> variable IntPos:    integer := 5678;
-> variable BigIntPos: integer := 12345678;
-> variable IntNeg:    integer := -8765;
-> variable BigIntNeg: integer := -87654321;
-> variable Uns:       unsigned(6 downto 0) := unsigned'("1010010");
-> variable Unk:       unsigned(6 downto 0) := unsigned'("1X10Z10");
-> variable Std:       std_logic_vector(6 downto 0) := std_logic_vector'("0010010");
-> variable SigPos:    signed(6 downto 0) := signed'("0010010");
-> variable SigNeg:    signed(6 downto 0) := signed'("1010010");
-> variable BitX:      std_logic := 'X';
-> variable Bit1:      std_logic := '1';
-> variable Bit0:      std_logic := '0';
-
-
--- fprint call with no arguments
-> fprint(RESULT, L, "No arguments.\n);"
-No arguments.
-
--- Special characters need to be escaped
-> fprint(RESULT, L, "Special characters: \% \\ " \n");
-Special characters: % \ " 
-
--- Various format specifiers interprete the same object differently
-> fprint(RESULT, L, "Format specifiers: %r %d %b %q\n);"
->                   fo(Uns), fo(Uns), fo(Uns), fo(Uns)
->       );
-Format specifiers: 0x52 82 1010010 U:1010010
-
--- Format string can be shortened by using the iteration specifier
-> fprint(RESULT, L, "Iteration specifier: %4{%r }\n);"
->                   fo(Uns), fo(SigPos), fo(SigNeg), fo(Std)
->       );
-Iteration specifier: 0x52 0x12 0x52 0x12 
-
-------------------------------------
--- Support for bit-oriented types --
-------------------------------------
-
--- Reasonable format
-> fprint(RESULT, L, "Reasonable format: %9{%r }\n",
->                   fo(Std), fo(Uns), fo(SigPos), fo(SigNeg), fo(Unk),
->                   fo(Bit1), fo(BitX), fo(BoolTrue), fo(BoolFalse) 
->       );
-Reasonable format: 0x12 0x52 0x12 0x52 0x?? 1 X T F 
-
--- Decimal format
-> fprint(RESULT, L, "Decimal format: %7{%d }\n",
->                   fo(Std), fo(Uns), fo(SigPos), fo(SigNeg), fo(Unk),
->                   fo(Bit1), fo(BitX), fo(BoolTrue), fo(BoolFalse) 
->       );
-Decimal format: 18 82 18 -46 -1 1 -1 1 0 
-
--- Bit format
-> fprint(RESULT, L, "Bit format: %7{%b }\n",
->                   fo(Std), fo(Uns), fo(SigPos), fo(SigNeg), fo(Unk),
->                   fo(Bit1), fo(BitX), fo(BoolTrue), fo(BoolFalse) 
->       );
-Bit format: 0010010 1010010 0010010 1010010 1X10Z10 1 X 1 0 
-
-
--- Alignment
--- Template of the call: (<fs> stands for the format specifier)
-
-> fprint(RESULT, L, "Bitvectors with <fs>:    %4{<fs>|}\n",
->                  fo(Std), fo(Uns), fo(SigPos), fo(SigNeg)
->       );
-
--- Results of the call with various format specifiers
-
-Bitvectors with %1r:  0x52|0x12|0x12|0x52| 
-Bitvectors with %2r:  0x52|0x12|0x12|0x52| 
-Bitvectors with %3r:  0x52|0x12|0x12|0x52| 
-Bitvectors with %4r:  0x52|0x12|0x12|0x52| 
-Bitvectors with %5r:   0x52| 0x12| 0x12| 0x52| 
-Bitvectors with %6r:    0x52|  0x12|  0x12|  0x52| 
-Bitvectors with %7r:     0x52|   0x12|   0x12|   0x52| 
-Bitvectors with %8r:      0x52|    0x12|    0x12|    0x52| 
-Bitvectors with %9r:       0x52|     0x12|     0x12|     0x52| 
-
-Bitvectors with %-1r:  0x52|0x12|0x12|0x52| 
-Bitvectors with %-2r:  0x52|0x12|0x12|0x52| 
-Bitvectors with %-3r:  0x52|0x12|0x12|0x52| 
-Bitvectors with %-4r:  0x52|0x12|0x12|0x52| 
-Bitvectors with %-5r:  0x52 |0x12 |0x12 |0x52 | 
-Bitvectors with %-6r:  0x52  |0x12  |0x12  |0x52  | 
-Bitvectors with %-7r:  0x52   |0x12   |0x12   |0x52   | 
-Bitvectors with %-8r:  0x52    |0x12    |0x12    |0x52    | 
-Bitvectors with %-9r:  0x52     |0x12     |0x12     |0x52     | 
-
-Bitvectors with %1d:  82|18|18|-46| 
-Bitvectors with %2d:  82|18|18|-46| 
-Bitvectors with %3d:   82| 18| 18|-46| 
-Bitvectors with %4d:    82|  18|  18| -46| 
-Bitvectors with %5d:     82|   18|   18|  -46| 
-Bitvectors with %6d:      82|    18|    18|   -46| 
-Bitvectors with %7d:       82|     18|     18|    -46| 
-Bitvectors with %8d:        82|      18|      18|     -46| 
-Bitvectors with %9d:         82|       18|       18|      -46| 
-
-Bitvectors with %-1d:  82|18|18|-46| 
-Bitvectors with %-2d:  82|18|18|-46| 
-Bitvectors with %-3d:  82 |18 |18 |-46| 
-Bitvectors with %-4d:  82  |18  |18  |-46 | 
-Bitvectors with %-5d:  82   |18   |18   |-46  | 
-Bitvectors with %-6d:  82    |18    |18    |-46   | 
-Bitvectors with %-7d:  82     |18     |18     |-46    | 
-Bitvectors with %-8d:  82      |18      |18      |-46     | 
-Bitvectors with %-9d:  82       |18       |18       |-46      | 
-
-
--------------------------------
--- Support for integer types --
--------------------------------
-
-
--- Template of the call: (<fs> stands for the format specifier)
-
-> fprint(RESULT, L, "Integers with <fs>:    %4{<fs>|}\n",
->                  fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
->       );
-
--- Results of the call with various format specifiers
-
-Integers with %5d:     5678|-8765|12345678|-87654321| 
-Integers with %6d:      5678| -8765|12345678|-87654321| 
-Integers with %7d:       5678|  -8765|12345678|-87654321| 
-Integers with %8d:        5678|   -8765|12345678|-87654321| 
-Integers with %9d:         5678|    -8765| 12345678|-87654321| 
-Integers with %10d:         5678|     -8765|  12345678| -87654321| 
-
-Integers with %-5d:    5678 |-8765|12345678|-87654321| 
-Integers with %-6d:    5678  |-8765 |12345678|-87654321| 
-Integers with %-7d:    5678   |-8765  |12345678|-87654321| 
-Integers with %-8d:    5678    |-8765   |12345678|-87654321| 
-Integers with %-9d:    5678     |-8765    |12345678 |-87654321| 
-Integers with %-10d:   5678      |-8765     |12345678  |-87654321 | 
-
-Integers with %5r:     5678|-8765| 5678|-4321| 
-Integers with %6r:      5678|- 8765| 45678|-54321| 
-Integers with %7r:       5678|-  8765| 345678|-654321| 
-Integers with %8r:        5678|-   8765| 2345678|-7654321| 
-Integers with %9r:         5678|-    8765| 12345678|-87654321| 
-Integers with %10r:         5678|-     8765|  12345678|- 87654321| 
-
-Integers with %-5r:     5678|-8765| 1234|-8765| 
-Integers with %-6r:     5678 |-8765 | 12345|-87654| 
-Integers with %-7r:     5678  |-8765  | 123456|-876543| 
-Integers with %-8r:     5678   |-8765   | 1234567|-8765432| 
-Integers with %-9r:     5678    |-8765    | 12345678|-87654321| 
-Integers with %-10r:    5678     |-8765     | 12345678 |-87654321 | 
-
-
-----------------------
--- Support for time --
-----------------------
--- For portability reasons, time is converted 
--- into an integer value (of nanoseconds)
-> wait for 648 ns
-> fprint (RESULT, L, "The time is now %d ns\n", fo(now));
-The time is now 648 ns
-
-----------------------------------------
--- Erroneous calls and error messages --
-----------------------------------------
-
--- Less arguments than formats specifiers
-> fprint(RESULT, L, "%d %d %d %d \n", fo(Uns), fo(Std));
-82 18 
-** Warning: FIO_PrintLastValue: Format specifier beyond last argument
-**  in format string: "%d %d %d %d \n"
-**                     ------^
-
--- Unsupported format specifier
-> fprint(RESULT, L, "%r %v %r %r\n", fo(Uns), fo(Std), fo(Uns), fo(Std));
-0x52 
-** Warning: FIO_PrintArg: Unexpected format specifier 'v'
-**   in format string: "%r %v %r %r\n"
-**                      ----^
-**   Assuming 'q' to proceed: V:0010010 0x52 0x12
-
-
-----------------------------------------
--- Things you wouldn't expect to work --
-----------------------------------------
-
--- Nested iteration
-> fprint(RESULT, L, "%3{<<%3{_END_}>>}\n");
-<<_END__END__END_>><<_END__END__END_>><<_END__END__END_>>

lib/PCK_FIO-1.16/PCK_FIO.vhd

@@ -1,916 +0,0 @@
----- File: PCK_FIO.vhd
-----
----- PCK_FIO: a VHDL package for C-style formatted file output
----- Copyright (C) 1995, 1999 Easics NV 
-----
----- 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 1, 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, write to the Free Software
----- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
----- 
----- For suggestions, bug reports, enhancement requests, and info about  
----- our design services, you can contact us at the following address: 
-----   Easics NV, Interleuvenlaan 86, B-3001 Leuven, Belgium
-----   tel.: +32 16 395 600   fax : +32 16 395 619 
-----   e-mail: jand@easics.be (Jan Decaluwe)
-----
-----
----- Revision history:
-----
----- $Source: /tmp/cvsroot/VHDL/lib/PCK_FIO-1.16/PCK_FIO.vhd,v $
----- $Revision: 1.1 $
----- $Log: not supported by cvs2svn $
----- Revision 1.16  1999/04/21 08:28:46  jand
----- Tested with IEEE.numeric_std
----- Small patch for Leapfrog
-----
----- Revision 1.14  1997/07/14 10:16:04  jand
----- prefix/postfix for bits/bitvectors set to empty strings by default
-----
----- Revision 1.13  1997/07/11  17:42:57  jand
----- Corrected Easics address
-----
----- Revision 1.12  1997/07/11  17:38:49  jand
----- Improved prefix/postfix support
-----
----- Revision 1.11  1995/11/15  13:46:02  jand
----- Catched integer'low value in fo for integers
-----
----- Revision 1.10  1995/08/11  16:42:26  jand
----- Reimplemented FIO_FormatExpand as a procedure in an attempt to
----- avoid memory leakage problems in VSS
-----
----- Revision 1.9  1995/08/09  13:47:51  jand
----- Removed array of line trick in fprint for less memory, less
----- CPU time, and more conservatism in general
----- Rearranged FIO_PrintValue call so that fprint remains concise
-----
----- Revision 1.8  1995/08/09  10:32:27  jand
----- Removed fprint_flat to have a single call level
----- Added explicit deallocators of line variables (has strong influence
----- on memory usage in VSS - and possibly CPU time)
----- Redefined 'fo' for type time to make it more portable
-----
----- Revision 1.7  1995/08/07  08:56:04  jand
----- Improved conciseness of fprint argument handling through array of line type
-----
----- Revision 1.6  1995/08/04  18:19:13  jand
----- Increase # arguments from 16 to 32
----- Corrected bug within fprint 's call to Arg16
----- Added support for bit format specifier 'b'
-----
----- Revision 1.5  1995/08/02  10:22:37  jand
----- Release 1.1 under GNU
-----
----- Revision 1.4  1995/08/01  11:15:52  jand
----- Added escaping during iteration string read
-----
----- Revision 1.3  1995/08/01  08:23:47  jand
----- Many improvements in robustness, conciseness and coding style
-----
----- Revision 1.2  1995/07/30  16:15:43  jand
----- Improved robustness for release to the world
-----
----- Revision 1.1  1995/07/30  14:21:30  jand
----- Initial revision
-----
-
-use STD.TEXTIO.all;
-
-library IEEE;
-use IEEE.std_logic_1164.all;
--- signed/unsigned definition: use either std_logic_arith or numeric_std
-use IEEE.std_logic_arith.all; -- the Synopsys one
--- use IEEE.numeric_std.all;
-
-package PCK_FIO is
-
-  -- prefix string for hex output
-  -- VHDL style:    "X"""
-  -- Verilog style: "h'"
-  -- C style:       "0x"
-  constant FIO_h_PRE:  string := "0x";
-
-  -- postfix string for hex output
-  -- VHDL style:    """"
-  constant FIO_h_POST: string := "";
-
-  -- prefix string for bit vector output
-  -- VHDL style:    "B"""
-  -- Verilog style: "b'"
-  constant FIO_bv_PRE:  string := "";
-
-  -- postfix string for bit vector output
-  -- VHDL style:    """"
-  constant FIO_bv_POST: string := "";
-
-  -- prefix string for bit output
-  -- VHDL style:    "'"
-  -- Verilog style: "b'"
-  constant FIO_b_PRE:  string := "";
-
-  -- postfix string for bit output
-  -- VHDL style:    "'"
-  constant FIO_b_POST: string := "";
-
-  -- digit width for the string representation of integers
-  constant FIO_d_WIDTH: integer := 10; 
-
-  -- bit width for the string representation of integers
-  constant FIO_b_WIDTH: integer := 32;
-
-  -- definition of the NIL string (default value for fprint arguments)
-  -- fprint stops consuming arguments at the first NIL argument 
-  constant FIO_NIL: string := "\";
-
-  procedure fprint 
-	     (F:       out   text;
-	      L:       inout line; 
-	      Format:  in    string;  
-	      A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 : in string := FIO_NIL;
-	      A9 , A10, A11, A12, A13, A14, A15, A16: in string := FIO_NIL;
-	      A17, A18, A19, A20, A21, A22, A23, A24: in string := FIO_NIL;
-	      A25, A26, A27, A28, A29, A30, A31, A32: in string := FIO_NIL
-	     );
-
-  function fo (Arg: unsigned)          return string;
-  function fo (Arg: signed)            return string;
-  function fo (Arg: std_logic_vector)  return string;
-  function fo (Arg: std_ulogic_vector) return string;
-  function fo (Arg: bit_vector)        return string;
-  function fo (Arg: integer)           return string;
-  function fo (Arg: std_ulogic)        return string;
-  function fo (Arg: bit)               return string;
-  function fo (Arg: boolean)           return string; 
-  function fo (Arg: character)         return string;
-  function fo (Arg: string)            return string;
-  function fo (Arg: time)              return string;
-
-  procedure FIO_FormatExpand (FMT:          inout line; 
-			      Format:       in    string; 
-			      StartPointer: in    positive);
-
-end PCK_FIO;
-
-
-package body PCK_FIO is
-
-
-  --------------------------
-  -- FIO Warnings support --
-  --------------------------
-
-  procedure FIO_Warning_Fsbla (F:       out   text;
-		               L:       inout line; 
-                               Format:  in    string;  
-			       Pointer: in    positive) is
-  begin
-    fprint (F, L, "\n** Warning: FIO_PrintLastValue: " &
-        	  "Format specifier beyond last argument\n"); 
-    fprint (F, L, "**  in format string: ""%s""\n", Format); 
-    fprint (F, L, "**                     ");                     
-    for i in 1 to Pointer-1 loop
-      fprint (F, L, "-"); 
-    end loop;
-    fprint (F, L, "^\n"); 
-  end FIO_Warning_Fsbla;
-
-  procedure FIO_Warning_Ufs   (F:       out   text;
-		               L:       inout line; 
-                               Format:  in    string;  
-			       Pointer: in    positive;
-			       Char:    in    character) is
-  begin
-    fprint (F, L, "\n** Warning: FIO_PrintArg: " &
-		  "Unexpected format specifier '%r'\n",
-		  fo(Char));
-    fprint (F, L, "**   in format string: ""%s""\n", Format) ; 
-    fprint (F, L, "**                      ");                     
-    for i in 1 to Pointer-1 loop
-      fprint (F, L, "-"); 
-    end loop;
-    fprint (F, L, "^\n**   Assuming 'q' to proceed: "); 
-  end FIO_Warning_Ufs;
-
-
-  ----------------------------------
-  -- bit conversion support --
-  ----------------------------------
-
-  type T_bit_map is array(bit) of character;  
-  
-  constant C_BIT_MAP: T_bit_map 
-             := ('0', '1');
-
-  ----------------------------------
-  -- std_logic conversion support --
-  ----------------------------------
-
-  type T_std_logic_map is array(std_ulogic) of character;  
-  
-  constant C_STD_LOGIC_MAP: T_std_logic_map 
-             := ('U', 'X', '0', '1', 'Z', 'W', 'L', 'H', '-');
-
-  ------------------------------
-  -- Digit conversion support --  
-  ------------------------------
-
-  -- types & constants
-
-  subtype S_digit_chars is character range '0' to '9';
-  subtype S_digits      is integer   range  0  to  9 ; 
-
-  type T_digit_chars_map is array(S_digit_chars) of S_digits; 
-
-  constant C_DIGIT_CHARS_MAP: T_digit_chars_map 
-    := (0, 1, 2, 3, 4, 5, 6, 7, 8, 9);
-
-  type T_digits_map is array(S_digits) of S_digit_chars; 
-
-  constant C_DIGITS_MAP: T_digits_map  
-    := ('0', '1', '2', '3', '4', '5', '6', '7', '8', '9');
-
-
-  --------------------------------
-  -- Decimal conversion support --
-  --------------------------------
-
-  function U_To_d (Arg: string) return integer is
-    constant Argument: string(Arg'length downto 1) := Arg;
-    variable Result: integer := 0;
-  begin
-    for i in Argument'range loop
-      case Argument(i) is when '1'    => Result := 2**(i-1) + Result;   
-	                  when '0'    => null;
-                          when others => return(-1); 
-      end case;
-    end loop;
-    return (Result);
-  end U_To_d;
-
-  function S_To_d (Arg: string) return integer is
-    constant Argument: string(Arg'length downto 1) := Arg;
-    variable Result: integer := 0; 
-  begin
-    case Argument(Argument'left) is 
-      when '1' =>    Result := - 2**(Argument'left-1);   
-      when '0' =>    Result := 0;
-      when others => return (integer'low); 
-    end case;
-    for i in Argument'left-1 downto 1 loop
-      case Argument(i) is when '1'    => Result := 2**(i-1) + Result;   
-	                  when '0'    => null;
-                          when others => return(integer'low); 
-      end case;
-    end loop; 
-    return (Result);
-  end S_To_d;
-
-  function I_To_d (Arg: string(1 to FIO_d_WIDTH+1)) return integer is
-    constant Sign: character := Arg(1);
-    constant Value: string(Arg'length-1 downto 1) := Arg(2 to Arg'length);
-    variable Char: character;
-    variable Result: integer := 0;
-  begin
-    Result := 0;
-    for i in Value'range loop
-      Result := Result * 10;
-      Char := Value(i);
-      if (Char /= ' ') then
-        Result := Result + C_DIGIT_CHARS_MAP(Char);
-      end if;
-    end loop;
-    case Sign is when '-'    => return(-Result);
-		 when others => return(Result);
-    end case;
-  end I_To_d;
-
-  function B_To_d (Arg: string(1 to 1)) return integer is
-  begin
-    case Arg is when "1"    => return(1);
-                when "0"    => return(0);
-                when others => return(-1);
-    end case;
-  end B_To_d;
-
-  function L_To_d (Arg: string(1 to 1)) return integer is
-  begin
-    case Arg is when "T"    => return(1);
-                when others => return(0);
-    end case;
-  end L_To_d;
-
-
-
-  ----------------------------
-  -- Hex conversion support --
-  ----------------------------
-
-  -- Constants & types
-
-  constant C_HEX_CHARS: string(1 to 17) := "0123456789ABCDEF?";
-
-  -- Function to return Hex index of a nibble  
-
-  function U_To_h_Index(Arg: string(4 downto 1)) return integer is
-    variable Index: integer := 0;
-  begin
-    for i in Arg'range loop
-      case Arg(i) is when '1'    => Index := 2**(i-1) + Index;   
-	             when '0'    => null;
-                     when others => return (17); 
-      end case;
-    end loop;
-    return (Index+1);
-  end U_To_h_Index;
-
-  -- Hex conversion  
-
-  function U_To_h (Arg: string) return string is
-    variable Result: string((Arg'length-1)/4 +1 downto 1);
-    variable ExtArg: string(Result'length*4 downto 1) := (others => '0'); 
-  begin
-    ExtArg(Arg'length downto 1) := Arg;
-    for i in Result'range loop
-      Result(i) := C_HEX_CHARS(U_To_h_Index( ExtArg(i*4 downto i*4 -3) ));     
-    end loop;
-    return (FIO_h_PRE & Result & FIO_h_POST);
-  end U_To_h;
-
-
-
-  ----------------------------
-  -- Bit conversion support --
-  ----------------------------
-
-  function L_To_b (Arg: string(1 to 1)) return string is
-    variable Result: string(1 to 1); 
-  begin
-    case Arg is when "T"    => Result := "1";
-                when others => Result := "0";
-    end case;
-    return(FIO_b_PRE & Result & FIO_b_POST);
-  end L_To_b;
-
-
-  function I_To_b (Arg: string(1 to FIO_d_WIDTH+1);
-	           Justified: side;
-		   Width: integer) return string is
-
-    variable IntValue: integer := I_To_d(Arg);
-    variable BitValue: string(1 to FIO_b_WIDTH) := (others => ' '); 
-    variable Sign: character := ' ';
-    constant Blanks: string(1 to FIO_b_WIDTH) := (others => ' ');
-    variable BitWidth: integer range 0 to FIO_b_WIDTH;
-    variable MsPos: integer range 1 to BitValue'length; 
-    variable BitValueExtended: string(1 to 2*FIO_b_WIDTH); 
-
-  begin
-
-    if (IntValue < 0) then
-      Sign := '-';
-      IntValue := -IntValue;
-    end if;
-
-    for i in BitValue'reverse_range loop 
-      BitValue(i) := C_DIGITS_MAP(IntValue mod 2); 
-      IntValue := IntValue / 2;
-      exit when (IntValue = 0);
-    end loop;
-
-    BitValueExtended := BitValue & Blanks; 
-
-    if (Width = 0) or (Width > FIO_b_WIDTH+1) then
-       BitWidth := FIO_b_WIDTH;   
-    else
-       BitWidth := Width-1;   
-    end if;
-
-    if (Justified = RIGHT) then
-      return (FIO_bv_PRE & 
-	      Sign & BitValue(BitValue'length-BitWidth+1 to BitValue'length) & 
-	      FIO_bv_POST);    
-    else
-      for i in BitValue'range loop 
-        if BitValue(i) /= ' ' then
-	  MSPos := i;
-	  exit;
-	end if;
-      end loop;
-      return (FIO_bv_PRE & 
- 	      Sign & BitValueExtended(MSPos to MSPos+BitWidth-1) & 
-	      FIO_bv_POST);
-    end if;
-
-  end I_To_b;
-
-
-  -----------------------------------
-  -- Reasonable conversion support --
-  -----------------------------------
-
-  function I_To_r (Arg: string(1 to FIO_d_WIDTH+1); 
-	           Justified: side;
-		   Width: integer) return string is
-    constant Value: string(1 to FIO_d_WIDTH) := Arg(2 to FIO_d_WIDTH+1);
-    constant Sign: character := Arg(1);
-    constant Blanks: string(1 to FIO_d_WIDTH) := (others => ' ');
-    variable IntWidth: integer range 0 to FIO_d_WIDTH;
-    variable MsPos: integer range 1 to Value'length; 
-    variable ValueExtended: string(1 to 2*FIO_d_WIDTH) := Value & Blanks; 
-  begin
-    if (Width = 0) or (Width > FIO_d_WIDTH+1) then
-       IntWidth := FIO_d_WIDTH;   
-    else
-       IntWidth := Width-1;   
-    end if;
-    if (Justified = RIGHT) then
-      return (Sign & Value(Value'length-IntWidth+1 to Value'length));    
-    else
-      for i in Value'range loop 
-        if Value(i) /= ' ' then
-	  MSPos := i;
-	  exit;
-	end if;
-      end loop;
-      return (Sign & ValueExtended(MSPos to MSPos+IntWidth-1));
-    end if;
-  end I_To_r;
-
-
-  -------------------------------------------
-  -- Reasonable output conversion function --
-  -------------------------------------------
-
-  function ReasonableOutput (Arg: string;
-			     Justified: side;
-		             Width: integer) return string is
-    constant Argument: string(1 to Arg'length) := Arg;
-    constant TypeSpec: string (1 to 2) := Argument(1 to 2);
-    constant Value: string(1 to Arg'length-2) := Argument(3 to Arg'length);
-  begin
-    case TypeSpec is
-      when "U:" | "S:" | "V:" => 
-        return U_To_h(Value);  
-      when "I:" =>
-	return I_To_r(Value, Justified, Width);
-      when "B:" | "L:" | "C:" =>
-        return Value;     
-      when others => 
-	return Argument;  
-    end case;
-
-  end ReasonableOutput;
-
-
-  ------------------------------------
-  -- Bit output conversion function --
-  ------------------------------------
-
-  function BitOutput (Arg: string;
-		      Justified: side;
-		      Width: integer) return string is
-    constant Argument: string(1 to Arg'length) := Arg;
-    constant TypeSpec: string (1 to 2) := Argument(1 to 2);
-    constant Value: string(1 to Arg'length-2) := Argument(3 to Arg'length);
-  begin
-    case TypeSpec is
-      when "U:" | "S:" | "V:" => 
-        return (FIO_bv_PRE & Value & FIO_bv_POST);  
-      when "B:" =>
-        -- Value(1 to 1) instead of Value for LeapFrog
-        return (FIO_b_PRE & Value(1 to 1) & FIO_b_POST);  
-      when "I:" =>
-	return I_To_b(Value, Justified, Width);
-      when "L:"  =>
-        -- Value(1 to 1) instead of Value for LeapFrog
-	return L_To_b(Value(1 to 1));
-      when others => 
-	return Argument;  
-    end case;
-
-  end BitOutput;
-
-
-  -------------------------------------------
-  -- Decimal output conversion function --
-  -------------------------------------------
-
-  function DecimalOutput (Arg: string) return integer is
-    constant Argument: string(1 to Arg'length) := Arg;
-    constant TypeSpec: string (1 to 2) := Argument(1 to 2);
-    constant Value: string(1 to Arg'length-2) := Argument(3 to Arg'length);
-  begin
-    case TypeSpec is
-      when "U:"| "V:" =>
-	return U_To_d(Value);
-      when "S:" =>
-	return S_To_d(Value);
-      when "I:" =>
-	return I_To_d(Value);
-      when "B:" =>
-	return B_To_d(Value);
-      when "L:" =>
-	return L_To_d(Value);
-      when others => 
-	return integer'low;  
-    end case;
-
-  end DecimalOutput;
-
-
-  ----------------------------
-  -- Atomic print functions --  
-  ----------------------------
-
-  function FIO_EOS (Format: in string;
-		    Pointer: in integer) 
-	   return boolean is 
-  begin
-    return (Pointer > Format'length);
-  end FIO_EOS; 
-
-
-  -- Atomic value print function
-
-  procedure FIO_PrintValue (F:       out   text;
-			    L:       inout line; 
-			    Format:  in    string; 
-			    Pointer: inout integer;
-			    Last:    in    boolean := FALSE) is
-    variable Char: character;  
-  begin
-    while (not FIO_EOS(Format, Pointer)) loop 
-      Char := Format(Pointer);
-      case Char is
-	when '\' =>
-	  Pointer := Pointer + 1;
-	  exit when (FIO_EOS(Format, Pointer));
-          Char := Format(Pointer);
-	  case Char is when 'n'    => writeline(F, L); 
-	               when others => write(L, Char);
-	  end case;
-	when '%' => 
-	  if Last then
-	    FIO_Warning_Fsbla(F, L, Format, Pointer);
-	  end if;
-	  Pointer := Pointer + 1; 
-	  exit;
-	when others  => 
-	  write(L, char); 
-      end case;
-      Pointer := Pointer + 1;
-    end loop;
-  end FIO_PrintValue; 
-
-
-  ---- Atomic argument print function
-
-  procedure FIO_PrintArg (F:       out   text;
-			  L:       inout line; 
-			  Format:  in    string; 
-			  Pointer: inout integer;
-			  Arg:     in    string) is
-    variable Char: character;  
-    variable Justified: side;  
-    variable Width: integer;
-  begin
-
-    FIO_PrintValue(F, L, Format, Pointer);
-
-    Justified := RIGHT;  
-    Width := 0; 
-    while (not FIO_EOS(Format, Pointer)) loop 
-      Char := Format(Pointer);
-      case Char is
-	when '-' =>
-	  Justified := LEFT;  
-          Pointer := Pointer + 1;
-	when '0' to '9' =>
-	  Width := Width*10 + C_DIGIT_CHARS_MAP(Char); 
-          Pointer := Pointer + 1;
-	when 'r' => 
-	  write(L, ReasonableOutput(Arg, Justified, Width), Justified, Width);  
-          Pointer := Pointer + 1;
-	  exit;
-	when 'b' => 
-	  write(L, BitOutput(Arg, Justified, Width), Justified, Width);  
-          Pointer := Pointer + 1;
-	  exit;
-	when 'd' => 
-	  write(L, DecimalOutput(Arg), Justified, Width);  
-          Pointer := Pointer + 1;
-	  exit;
-	when 'q' | 's' => 
-	  write(L, Arg, Justified, Width);  
-          Pointer := Pointer + 1;
-	  exit;
-	when others  => 
-          FIO_Warning_Ufs(F, L, Format, Pointer, Char);
-	  write(L, Arg, Justified, Width);  
-          Pointer := Pointer + 1;
-	  exit;
-      end case;
-    end loop;
-  end FIO_PrintArg; 
-
-
-  -----------------------------------------------------
-  -- The format string iteration expansion procedure --
-  -----------------------------------------------------
-
-  procedure FIO_FormatExpand (FMT:          inout line; 
-			      Format:       in    string; 
-			      StartPointer: in    positive) is
-
-    variable Pointer: positive := StartPointer;
-    variable TokenStart: positive;
-    variable IterStringStart: positive;
-    variable IterStringEnd: positive;
-    variable IterCount: natural;
-    variable OpenBrackets: natural;
-    variable L: line;
-
-  begin
-
-    FORMAT_SEARCH: while not FIO_EOS(Format, Pointer) loop 
-
-      case Format(Pointer) is
-
-        -- look for format specifier
-	when '%' => 
-
-          -- initialize iteration token search 
-	  TokenStart := Pointer;
-          IterCount := 0; 
-	  Pointer := Pointer + 1;
-
-          -- start iteration token search
-	  TOKEN_READ: while not FIO_EOS(Format, Pointer) loop 
-             
-	    case Format(Pointer) is
-                
-              -- read iteration counter
-	      when '0' to '9' =>
-		IterCount := IterCount*10 + C_DIGIT_CHARS_MAP(Format(Pointer)); 
-                Pointer := Pointer + 1;
-               
-              -- expect open bracket
-	      when '{' => 
-
-		-- initialize iteration string read
-		OpenBrackets := 1;
-		IterStringStart := Pointer + 1;
-                Pointer := Pointer + 1;
-		-- quit prematurely when iteration count is 0
-		next FORMAT_SEARCH when (IterCount = 0);
-
-                -- start iteration string read
-	        ITER_STRING_READ: while not FIO_EOS(Format, Pointer) loop 
-
-	          case Format(Pointer) is
-                    -- keep track of open brackets
-		    when '{' => 
-		      OpenBrackets := OpenBrackets + 1;
-	              Pointer := Pointer + 1;
-                    -- when closing bracket is found, process iteration string      
-		    when '}' => 
-	 	      OpenBrackets := OpenBrackets - 1;
-		      if (OpenBrackets = 0) then
-			IterStringEnd := Pointer-1;
-			if (TokenStart /= 1) then
-			  write(L, Format(1 to TokenStart-1)); 
-			end if;
-			for i in 1 to IterCount loop
-			  write(L,  Format(IterStringStart to IterStringEnd));
-			end loop;
-			if (IterStringEnd /= Format'length) then
-			  write(L, Format(IterStringEnd+2 to Format'length)); 
-			end if;
-			-- call expansion procedure recursively on expanded format
-			FIO_FormatExpand(FMT, L.all, TokenStart);
-                        deallocate(L);
-                        return; 
-		      end if;
-	              Pointer := Pointer + 1;
-                    -- skip escaped characters
-	            when '\' => 
-	              Pointer := Pointer + 2;
-                    -- read iteration string  
-	            when others => 
-	              Pointer := Pointer + 1;
-
-		  end case; 
-
-		end loop ITER_STRING_READ;
-
-              -- stop iteration token search when no opening bracket found 
-	      when others => 
-                Pointer := Pointer + 1;
-		next FORMAT_SEARCH;
-
-	    end case;
-
-	  end loop TOKEN_READ;
-
-        -- skip escaped characters
-	when '\' => 
-	  Pointer := Pointer + 2;
-
-        -- read other characters
-	when others => 
-          Pointer := Pointer + 1;
-
-      end case;
-
-    end loop FORMAT_SEARCH;
-
-    write(FMT, Format);
-    deallocate(L);
-
-  end FIO_FormatExpand;
-
-
-
-  --------------------------
-  -- The fprint procedure --
-  --------------------------
-
-  procedure fprint 
-	     (F:       out   text;
-	      L:       inout line; 
-	      Format:  in    string;  
-	      A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 : in string := FIO_NIL;
-	      A9 , A10, A11, A12, A13, A14, A15, A16: in string := FIO_NIL;
-	      A17, A18, A19, A20, A21, A22, A23, A24: in string := FIO_NIL;
-	      A25, A26, A27, A28, A29, A30, A31, A32: in string := FIO_NIL
-	     ) is
-
-    variable Pointer: integer;
-    variable FMT: line;
-		    
-  begin
-
-    Pointer := 1;
-
-    FIO_FormatExpand (FMT, Format, Format'low);
-
-    if (A1  /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A1 );
-    if (A2  /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A2 );
-    if (A3  /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A3 );
-    if (A4  /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A4 );
-    if (A5  /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A5 );
-    if (A6  /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A6 );
-    if (A7  /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A7 );
-    if (A8  /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A8 );
-    if (A9  /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A9 );
-    if (A10 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A10);
-    if (A11 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A11);
-    if (A12 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A12);
-    if (A13 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A13);
-    if (A14 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A14);
-    if (A15 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A15);
-    if (A16 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A16);
-    if (A17 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A17);
-    if (A18 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A18);
-    if (A19 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A19);
-    if (A20 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A20);
-    if (A21 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A21);
-    if (A22 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A22);
-    if (A23 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A23);
-    if (A24 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A24);
-    if (A25 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A25);
-    if (A26 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A26);
-    if (A27 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A27);
-    if (A28 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A28);
-    if (A29 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A29);
-    if (A30 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A30);
-    if (A31 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A31);
-    if (A32 /= FIO_NIL) then FIO_PrintArg(F, L, FMT.all, Pointer, A32);
-    end if; end if; end if; end if; end if; end if; end if; end if; 
-    end if; end if; end if; end if; end if; end if; end if; end if; 
-    end if; end if; end if; end if; end if; end if; end if; end if; 
-    end if; end if; end if; end if; end if; end if; end if; end if; 
-
-    FIO_PrintValue(F, L, FMT.all, Pointer, Last => TRUE);
-
-    deallocate(FMT);
-
-  end fprint;
-  
-
-  -------------------------------------------
-  -- Formatted output conversion functions --
-  -------------------------------------------
-
-  function fo (Arg: unsigned) return string is
-    constant Argument: unsigned(1 to Arg'length) := Arg;
-    variable Result: string(1 to Arg'length); 
-  begin
-    for i in Argument'range loop
-      Result(i) := C_STD_LOGIC_MAP(Argument(i));
-    end loop;
-    return ("U:" & Result);
-  end fo;
-
-  function fo (Arg: signed) return string is
-    constant Argument: signed(1 to Arg'length) := Arg;
-    variable Result: string(1 to Arg'length); 
-  begin
-    for i in Argument'range loop
-      Result(i) := C_STD_LOGIC_MAP(Argument(i));
-    end loop;
-    return ("S:" & Result);
-  end fo;
-
-  function fo (Arg: std_logic_vector) return string is
-    constant Argument: std_logic_vector(1 to Arg'length) := Arg;
-    variable Result: string(1 to Arg'length); 
-  begin
-    for i in Argument'range loop
-      Result(i) := C_STD_LOGIC_MAP(Argument(i));
-    end loop;
-    return ("V:" & Result);
-  end fo;
-
-  function fo (Arg: std_ulogic_vector) return string is
-    constant Argument: std_ulogic_vector(1 to Arg'length) := Arg;
-    variable Result: string(1 to Arg'length); 
-  begin
-    for i in Argument'range loop
-      Result(i) := C_STD_LOGIC_MAP(Argument(i));
-    end loop;
-    return ("V:" & Result);
-  end fo;
-
-  function fo (Arg: bit_vector) return string is
-    constant Argument: bit_vector(1 to Arg'length) := Arg;
-    variable Result: string(1 to Arg'length); 
-  begin
-    for i in Argument'range loop
-      Result(i) := C_BIT_MAP(Argument(i));
-    end loop;
-    return ("V:" & Result);
-  end fo;
-
-  function fo (Arg: integer) return string is
-    variable Argument: integer := Arg;
-    variable Result: string(1 to FIO_d_WIDTH) := (others => ' '); 
-    variable Sign: character := ' ';
-  begin
-    if (Argument < 0) and (Argument /= integer'low) then
-      Sign := '-';
-      Argument := -Argument;
-    end if;
-    for i in Result'reverse_range loop 
-      Result(i) := C_DIGITS_MAP(Argument mod 10); 
-      Argument := Argument / 10;
-      exit when (Argument = 0);
-    end loop;
-    return ("I:" & Sign & Result);
-  end fo;
-
-  function fo (Arg: std_ulogic) return string is
-  begin
-    return ("B:" & C_STD_LOGIC_MAP(Arg));
-  end fo;
-
-  function fo (Arg: bit) return string is
-  begin
-    return ("B:" & C_BIT_MAP(Arg));
-  end fo;
-
-  function fo (Arg: boolean) return string is
-  begin
-    if (ARG = TRUE) then
-      return ("L:T");
-    else 
-      return ("L:F");
-    end if;
-  end fo;
-
-  function fo (Arg: character) return string is
-  begin
-    return ("C:" & Arg);   
-  end fo;
-
-  function fo (Arg: string) return string is
-  begin
-    return Arg;   
-  end fo;
-
-  function fo (Arg: time) return string is
-  begin
-    return fo (integer (Arg / 1 ns));   
-  end fo;
-
-end PCK_FIO;

lib/PCK_FIO-1.16/README

@@ -1,72 +0,0 @@
-# $Id: README,v 1.1 2008-08-23 08:20:28 Jens Exp $
-# $Log: not supported by cvs2svn $
-# Revision 1.3  1999/04/21 08:08:35  jand
-# Tested with IEEE.numeric_std
-# Small patch for Leapfrog
-#
-#
-
-                       PCK_FIO, Version 1.16
-                  Copyright (C) 1995, 1999 Easics NV 
-
----- PCK_FIO: a VHDL package for C-style formatted file output
----- Copyright (C) 1995, 1999 Easics NV 
-----
----- 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 1, 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, write to the Free Software
----- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
----- 
----- For suggestions, bug reports, enhancement requests, and info about  
----- our design services, you can contact us at the following address: 
-----   Easics NV, Interleuvenlaan 86, B-3001 Leuven, Belgium
-----   tel.: +32 16 395 600   fax : +32 16 395 619 
-----   e-mail: jand@easics.be (Jan Decaluwe)
-----
-
-Contents
---------
-
-This distribution contains the following files:
-
-  PCK_FIO.vhd:         VHDL source of the PCK_FIO package 
-  TB_PCK_FIO.vhd:      VHDL source of the testbench for package PCK_FIO
-  PCK_FIO.out.gold:    Certified test bench output
-  PCK_FIO.html:        Manual for PCK_FIO in html format
-  README:              This file
-
-
-Installation
-------------
-
-To install PCK_FIO, define a VHDL library called EASICS_PACKAGES, and
-analyze the VHDL file PCK_FIO.vhd into this library.
-
-To install the test bench, analyze TB_PCK_FIO.vhd into the same library.
-
-If you want to use IEEE.numeric_std instead of IEEE.std_logic_arith, you need
-to edit the source code of the package and the test bench and replace the
-package use clause. PCK_FIO works with either of these packages.
-
-To install the documentation, point your web browser to the file PCK_FIO.html
-and bookmark it.
-
-
-Installation check
-------------------
-
-After installing the test bench, you should run it. The corresponding VHDL
-design unit is EASICS_PACKAGES.TBE_PCK_FIO(TB).
-
-Simulating the test bench should create a file called PCK_FIO.out. This file
-should be identical to PCK_FIO.out.gold. Any difference indicates a portability
-issue or a simulator non-compliance or bug.

lib/PCK_FIO-1.16/TB_PCK_FIO.vhd

@@ -1,504 +0,0 @@
----- File: TB_PCK_FIO.vhd
-----
----- TBC_PCK_FIO: a test bench for the PCK_FIO package. 
----- Copyright (C) 1995, 1999 Easics NV 
-----
----- 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 1, 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, write to the Free Software
----- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
----- 
----- For suggestions, bug reports, enhancement requests, and info about  
----- our design services, you can contact us at the following address: 
-----   Easics NV, Interleuvenlaan 86, B-3001 Leuven, Belgium
-----   tel.: +32 16 395 600  fax : +32 16 396 619 
-----   e-mail: jand@easics.be (Jan Decaluwe)
-----
-----
----- $Source: /tmp/cvsroot/VHDL/lib/PCK_FIO-1.16/TB_PCK_FIO.vhd,v $
----- $Revision: 1.1 $
----- $Log: not supported by cvs2svn $
----- Revision 1.7  1999/04/21 08:23:53  jand
----- Tested with IEEE.numeric_std
----- Small patch for Leapfrog
-----
----- Revision 1.3  1998/09/29 10:09:44  vhdl
----- to EASICS_PACKAGES
-----
----- Revision 1.2  1998/09/29 09:17:51  vhdl
----- library EASICS_PACKAGES;
-----
----- Revision 1.1  1998/09/29 09:15:44  vhdl
----- Initial revision
-----
-
-
-library IEEE;
-use IEEE.std_logic_1164.all;
--- signed/unsigned definition: use either std_logic_arith or numeric_std
-use IEEE.std_logic_arith.all; -- the Synopsys one
--- use IEEE.numeric_std.all;
-
-use STD.TEXTIO.all;
-
-library EASICS_PACKAGES;
-use EASICS_PACKAGES.PCK_FIO.all;
-
-entity TBE_PCK_FIO is
-
-end TBE_PCK_FIO;
-
-architecture TB of TBE_PCK_FIO is
-
-begin
-
-USAGE: process
-
-  file RESULT:        text is out "PCK_FIO.out"; 
-  variable L:         line;
-  variable Pointer:   integer;
-  variable BoolTrue:  boolean := TRUE;
-  variable BoolFalse: boolean := FALSE;
-  variable IntPos:    integer := 5678; 
-  variable BigIntPos: integer := 12345678; 
-  variable IntNeg:    integer := -8765; 
-  variable BigIntNeg: integer := -87654321; 
-  variable Uns:       unsigned(6 downto 0) := unsigned'("1010010");
-  variable Unk:       unsigned(6 downto 0) := unsigned'("1X10Z10");
-  variable Std:       std_logic_vector(6 downto 0) := std_logic_vector'("0010010");
-  variable SigPos:    signed(6 downto 0) := signed'("0010010");
-  variable SigNeg:    signed(6 downto 0) := signed'("1010010");
-  variable BitX:      std_logic := 'X';
-  variable Bit1:      std_logic := '1';
-  variable Bit0:      std_logic := '0';
-
-  variable parameter_1: integer := 1234;
-  variable parameter_2: integer := 2345;
-  variable parameter_3: integer := 4567;
-
-
-begin
-
-fprint(RESULT, L,
-       "PCK_FIO.out: TESTBENCH OUTPUT FOR PCK_FIO\n" &
-       "-----------------------------------------\n\n" &
-       "This is the result of running the PCK_FIO testbench.\n" &
-       "This file should be compared with PCK_FIO.out.gold, which is\n" &
-       "the reference output. Any difference indicates a portability\n" &
-       "issue or a simulator non-compliance or bug.\n\n"
-      );
-
-  
-fprint(RESULT, L,
-       "\n--------------------\n" &
-         "-- Basic features --\n" &
-         "--------------------\n\n"
-      );
-
-fprint(RESULT, L,
-         "-- First some auxiliary declarations\n"
-      );
-
-fprint(RESULT, L,
-  "> file     RESULT:    text is out ""PCK_FIO.out"";\n" &
-  "> variable L:         line;\n" &
-  "> variable BoolTrue:  boolean := TRUE;\n" &
-  "> variable BoolFalse: boolean := FALSE;\n" &
-  "> variable IntPos:    integer := 5678;\n" & 
-  "> variable BigIntPos: integer := 12345678;\n" & 
-  "> variable IntNeg:    integer := -8765;\n" & 
-  "> variable BigIntNeg: integer := -87654321;\n" & 
-  "> variable Uns:       unsigned(6 downto 0) := unsigned'(""1010010"");\n" &
-  "> variable Unk:       unsigned(6 downto 0) := unsigned'(""1X10Z10"");\n" &
-  "> variable Std:       std_logic_vector(6 downto 0) := std_logic_vector'(""0010010"");\n" &
-  "> variable SigPos:    signed(6 downto 0) := signed'(""0010010"");\n" &
-  "> variable SigNeg:    signed(6 downto 0) := signed'(""1010010"");\n" &
-  "> variable BitX:      std_logic := 'X';\n" &
-  "> variable Bit1:      std_logic := '1';\n" &
-  "> variable Bit0:      std_logic := '0';\n"
-);
-  
-   
-fprint(RESULT, L,
-       "\n\n-- fprint call with no arguments\n" &
-       "> fprint(RESULT, L, ""No arguments.\\n);""\n"
-      );
-fprint(RESULT, L, "No arguments.\n");
-  
-  
-fprint(RESULT, L,
-       "\n-- Special characters need to be escaped\n" &
-       "> fprint(RESULT, L, ""Special characters: \\\% \\\\ "" \\n"");\n"
-      );
-
-fprint(RESULT, L, "Special characters: \% \\ "" \n");
-
-
-fprint(RESULT, L,
-       "\n-- Various format specifiers interprete the same object differently\n" &
-       "> fprint(RESULT, L, ""Format specifiers: \%r \%d \%b \%q\\n);""\n" &
-       ">                   fo(Uns), fo(Uns), fo(Uns), fo(Uns)\n" &
-       ">       );\n"
-      );
-  
-fprint(RESULT, L, "Format specifiers: %r %d %b %q\n",
-                  fo(Uns), fo(Uns), fo(Uns), fo(Uns)
-      );
-
-fprint(RESULT, L,
-       "\n-- Format string can be shortened by using the iteration specifier\n" &
-       "> fprint(RESULT, L, ""Iteration specifier: \%4{\%r }\\n);""\n" &
-       ">                   fo(Uns), fo(SigPos), fo(SigNeg), fo(Std)\n" &
-       ">       );\n"
-      );
-  
-fprint(RESULT, L, "Iteration specifier: %4{%r }\n",
-                  fo(Uns), fo(SigPos), fo(SigNeg), fo(Std)
-      );
-
-
-fprint(RESULT, L,
-       "\n------------------------------------\n" &
-         "-- Support for bit-oriented types --\n" &
-         "------------------------------------\n"
-      );
-
-fprint (RESULT, L, "\n-- Reasonable format\n" &
-                   "> fprint(RESULT, L, ""Reasonable format: \%9{\%r }\\n"",\n" &
-	           ">                   fo(Std), fo(Uns), fo(SigPos), fo(SigNeg), fo(Unk),\n" &
-                   ">                   fo(Bit1), fo(BitX), fo(BoolTrue), fo(BoolFalse) \n" &
-                   ">       );\n"
-       );
-
-  
-fprint(RESULT, L, "Reasonable format: %9{%r }\n",
-	          fo(Std), fo(Uns), fo(SigPos), fo(SigNeg), fo(Unk),
-                  fo(Bit1), fo(BitX), fo(BoolTrue), fo(BoolFalse)
-      );
-
-fprint (RESULT, L, "\n-- Decimal format\n" &
-                   "> fprint(RESULT, L, ""Decimal format: \%7{\%d }\\n"",\n" &
-	           ">                   fo(Std), fo(Uns), fo(SigPos), fo(SigNeg), fo(Unk),\n" &
-                   ">                   fo(Bit1), fo(BitX), fo(BoolTrue), fo(BoolFalse) \n" &
-                   ">       );\n"
-       );
-
-  
-fprint(RESULT, L, "Decimal format: %9{%d }\n",
-	          fo(Std), fo(Uns), fo(SigPos), fo(SigNeg), fo(Unk),
-                  fo(Bit1), fo(BitX), fo(BoolTrue), fo(BoolFalse)
-      );
-
-fprint (RESULT, L, "\n-- Bit format\n" &
-                   "> fprint(RESULT, L, ""Bit format: \%7{\%b }\\n"",\n" &
-	           ">                   fo(Std), fo(Uns), fo(SigPos), fo(SigNeg), fo(Unk),\n" &
-                   ">                   fo(Bit1), fo(BitX), fo(BoolTrue), fo(BoolFalse) \n" &
-                   ">       );\n"
-       );
-  
-
-fprint(RESULT, L, "Bit format: %9{%b }\n",
-	          fo(Std), fo(Uns), fo(SigPos), fo(SigNeg), fo(Unk),
-                  fo(Bit1), fo(BitX), fo(BoolTrue), fo(BoolFalse)
-      );
-
-fprint(RESULT, L,
-       "\n\n" &
-         "-- Alignment\n-- Template of the call: (<fs> stands for the format specifier)\n"
-      );
- 
-
-fprint(RESULT, L, "\n" & 
-                 "> fprint(RESULT, L, ""Bitvectors with <fs>:    \%4{<fs>|}\\n"",\n" &
-		 ">                  fo(Std), fo(Uns), fo(SigPos), fo(SigNeg)\n" &
-       
-                 ">       );\n"
-      );
-
-fprint(RESULT, L,
-       "\n" &
-         "-- Results of the call with various format specifiers\n\n"
-      );
-
-fprint(RESULT, L, "Bitvectors with \%1r:  %4{%1r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%2r:  %4{%2r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%3r:  %4{%3r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%4r:  %4{%4r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%5r:  %4{%5r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%6r:  %4{%6r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%7r:  %4{%7r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%8r:  %4{%8r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%9r:  %4{%9r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "\n");
-fprint(RESULT, L, "Bitvectors with \%-1r:  %4{%-1r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-2r:  %4{%-2r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-3r:  %4{%-3r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-4r:  %4{%-4r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-5r:  %4{%-5r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-6r:  %4{%-6r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-7r:  %4{%-7r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-8r:  %4{%-8r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-9r:  %4{%-9r|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "\n");
-fprint(RESULT, L, "Bitvectors with \%1d:  %4{%1d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%2d:  %4{%2d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%3d:  %4{%3d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%4d:  %4{%4d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%5d:  %4{%5d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%6d:  %4{%6d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%7d:  %4{%7d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%8d:  %4{%8d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%9d:  %4{%9d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "\n");
-fprint(RESULT, L, "Bitvectors with \%-1d:  %4{%-1d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-2d:  %4{%-2d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-3d:  %4{%-3d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-4d:  %4{%-4d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-5d:  %4{%-5d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-6d:  %4{%-6d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-7d:  %4{%-7d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-8d:  %4{%-8d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "Bitvectors with \%-9d:  %4{%-9d|} \n",
-                   fo(Uns), fo(Std), fo(SigPos), fo(SigNeg)
-       );
-fprint(RESULT, L, "\n");
-
-  
-  
-fprint(RESULT, L,
-       "\n-------------------------------\n" &
-         "-- Support for integer types --\n" &
-         "-------------------------------\n"
-      );
-
-fprint(RESULT, L,
-       "\n\n" &
-         "-- Template of the call: (<fs> stands for the format specifier)\n"
-      );
- 
-
-fprint(RESULT, L, "\n" & 
-                 "> fprint(RESULT, L, ""Integers with <fs>:    \%4{<fs>|}\\n"",\n" &
-		 ">                  fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)\n" &
-       
-                 ">       );\n"
-      );
-
-fprint(RESULT, L,
-       "\n" &
-         "-- Results of the call with various format specifiers\n\n"
-      );
-  
-  
-fprint(RESULT, L, "Integers with \%5d:    %4{%5d|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%6d:    %4{%6d|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%7d:    %4{%7d|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%8d:    %4{%8d|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%9d:    %4{%9d|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%10d:   %4{%10d|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "\n");
-fprint(RESULT, L, "Integers with \%-5d:    %4{%-5d|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%-6d:    %4{%-6d|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%-7d:    %4{%-7d|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%-8d:    %4{%-8d|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%-9d:    %4{%-9d|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%-10d:   %4{%-10d|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "\n");
-fprint(RESULT, L, "Integers with \%5r:    %4{%5r|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%6r:    %4{%6r|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%7r:    %4{%7r|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%8r:    %4{%8r|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%9r:    %4{%9r|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%10r:   %4{%10r|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "\n");
-fprint(RESULT, L, "Integers with \%-5r:    %4{%-5r|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%-6r:    %4{%-6r|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%-7r:    %4{%-7r|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%-8r:    %4{%-8r|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%-9r:    %4{%-9r|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "Integers with \%-10r:   %4{%-10r|} \n",
-		   fo(IntPos), fo(IntNeg), fo(BigIntPos), fo(BigIntNeg)
-      );
-fprint(RESULT, L, "\n");
-
-
-fprint(RESULT, L,
-       "\n----------------------\n" &
-         "-- Support for time --\n" &
-         "----------------------\n"
-      );
-  
-fprint (RESULT, L, "-- For portability reasons, time is converted \n" &
-                   "-- into an integer value (of nanoseconds)\n"
-       ); 
-fprint (RESULT, L, "> wait for 648 ns\n"); 
-fprint (RESULT, L, "> fprint (RESULT, L, ""The time is now \%d ns\\n"", fo(now));\n"); 
-
-wait for 648 ns;
-  
-fprint (RESULT, L, "The time is now %d ns\n", fo(now)); 
-
-  
-fprint(RESULT, L,
-       "\n----------------------------------------\n" &
-         "-- Erroneous calls and error messages --\n" &
-         "----------------------------------------\n"
-      );
-
-fprint(RESULT, L, "\n-- Less arguments than formats specifiers\n" &
-                  "> fprint(RESULT, L, ""\%d \%d \%d \%d \\n"", fo(Uns), fo(Std));\n"
-      );
-
-fprint(RESULT, L, "%d %d %d %d \n", fo(Uns), fo(Std));
- 
-fprint(RESULT, L, "\n");
-  
-fprint(RESULT, L, "-- Unsupported format specifier\n" &
-                  "> fprint(RESULT, L, ""\%r \%v \%r \%r\\n"", " &
-                  "fo(Uns), fo(Std), fo(Uns), fo(Std));\n"
-      ); 
-
-fprint(RESULT, L, "%r %v %r %r\n", fo(Uns), fo(Std), fo(Uns), fo(Std));
-
-fprint(RESULT, L, "\n");
-
-fprint(RESULT, L,
-       "\n----------------------------------------\n" &
-         "-- Things you wouldn't expect to work --\n" &
-         "----------------------------------------\n"
-      );
-
-fprint(RESULT, L, "\n-- Nested iteration\n");
-fprint(RESULT, L, "> fprint(RESULT, L, ""\%3{<<\%3{_END_}>>}\\n"");\n");
-fprint(RESULT, L, "%3{<<%3{_END_}>>}\n");
-
-wait;
-  
-end process USAGE;
-  
-end TB;

lib/PCK_FIO-2002.7/CHANGES

@@ -1,86 +0,0 @@
-----  $Id: CHANGES,v 1.1 2008-08-23 08:20:28 Jens Exp $
-----
-----  PCK_FIO: a VHDL package for C-style formatted file output
-----  Copyright (C) 1995, 2001 Easics NV 
-----
-----  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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
----- 
-----  For suggestions, bug reports, enhancement requests, and info about  
-----  our design services, you can contact us at the following address: 
-----     http://www.easics.com
-----     Easics NV, Interleuvenlaan 86, B-3001 Leuven, Belgium
-----     tel.: +32 16 395 600   fax : +32 16 395 619 
-----     e-mail: jand@easics.be (Jan Decaluwe)
-----
-
-
-Changes from version 1.16 to version 2002.07
-============================================
-
-PCK_FIO is now distributed under the GNU Lesser General Public Licencse
-instead of the ordinary GPL, to better reflect intended usage.
-
-Cosmetic changes in source code to correct some typos in the testbench output.
-A new testbench is also supplied.
-
-The package now uses IEEE.numeric_std as default.
-
-URL http://www.easics.com has been made part of address.
-
-Changed syntax in the PCK_FIO package and its testbench to support VHDL-1993.
-Because of backwards-incompatibility, it has been necessary to supply
-different sets of files for 1987 and 1993.
-
-Split the packages into a separate file for the header and a
-separate file for the body (in compliance with Easics' guidelines).
-
-These changes resulted in the files:
-
-Files for VHDL-1993: 
---------------------
-  PCK_FIO_1993.vhd : 	 the source code of the header file for the package
-  PCK_FIO_1993_BODY.vhd: the source code of the body of the package
-  TB_PCK_FIO_1993.vhd:   the testbench for the package 
-
-Files for VHDL-1987:
---------------------
-  PCK_FIO_1987.vhd:      the source code of the header file for the package
-  PCK_FIO_1987_BODY.vhd: the source code of the body of the package
-  TB_PCK_FIO_1987.vhd:   the testbench for the package 
-
-Updated README and PCK_FIO.html to support these changes.
-
-Adapted package files to support NUL termination of strings.
-fo(Arg: string) now prints the string until the first NUL.
-Several examples of its use are demonstrated in the supplied testbenches.
-
-Made cosmetic changes to code to improve readability.
-
-Acknowledgment
---------------
-These changes have been implemented by Peter Geens.
-
-
-
-
-
-
-
-
-
-
-
-
-

lib/PCK_FIO-2002.7/PCK_FIO.html

@@ -1,339 +0,0 @@
-<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
-<html>
-<head>
-   <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
-   <meta name="GENERATOR" content="Mozilla/4.76 [en] (X11; U; Linux 2.4.13 i686) [Netscape]">
-   <title>VHDL package for formatted file output</title>
-<!-- $Id: PCK_FIO.html,v 1.1 2008-08-23 08:20:28 Jens Exp $ -->
-</head>
-<body text="#000000" bgcolor="#FFFFFF" link="#0000EE" vlink="#551A8B" alink="#FF0000">
-
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_name_0"></a>Name</h1>
-<b>PCK_FIO</b> - VHDL package for&nbsp; formatted file output
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-Contents</h1>
-<a href="#PCK_FIO_usage_0">Usage</a>
-<br><a href="#PCK_FIO_file_0">The file output function 'fo'</a>
-<br><a href="#PCK_FIO_format_0">Format specifiers</a>
-<br><a href="#PCK_FIO_special_0">Special characters</a>
-<br><a href="#PCK_FIO_things_0">Things to watch out for</a>
-<br><a href="#PCK_FIO_methodology_0">Methodology notes</a>
-<br><a href="#PCK_FIO_parametrization_0">Parametrization</a>
-<br><a href="#PCK_FIO_test_0">Test bench</a>
-<br><a href="#PCK_FIO_limitations_0">Known limitations and problems</a>
-<br><a href="#PCK_FIO_author_0">Author</a>
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_usage_0"></a>Usage</h1>
-PCK_FIO is a VHDL package that defines&nbsp; <tt>fprint, </tt>a function
-for formatted file output.
-<p>After installing the package you can call <tt>fprint</tt> as follows:
-<pre>&nbsp; fprint(F, L, Format, fo(Expr_1), fo(Expr_2), ... fo(Expr_n));</pre>
-where F is the filehandle and L is the line variable.
-<p>The argument Format is the format string, which consists of ``normal''
-substrings which are copied verbatim, and format specifiers, starting with
-<tt>'%'</tt>.
-A typical format string looks as follows:
-<pre>&nbsp;&nbsp; "Arg1 = %6r, Arg2 = %10d, Arg3 = %-5r\n"</pre>
-The remaining arguments are the expressions whose results you want to write
-to the file, embedded in <tt>fo</tt> function calls. There can be 0 to
-32 of such arguments. The expressions can be of any type for which an <tt>fo</tt>
-function exists. String expressions can also be called directly.
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_file_0"></a>The file output function <tt>'fo'</tt></h1>
-The <tt>fo</tt> (<u>f</u>ile <u>o</u>utput) functions do the trick. They
-return a tagged string representation that is meaningful to format specifiers.
-Here are some examples:
-<pre>&nbsp; fo (signed'("1100"))&nbsp;&nbsp; returns "S:1100"&nbsp;
-&nbsp; fo (unsigned'("1100")) returns "U:1100"&nbsp;
-&nbsp; fo (TRUE)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; returns "L:T"
-&nbsp; fo (127)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; returns "I:127"</pre>
-The internal behavior of <tt>fo</tt> is irrelevant to the typical user.
-<br>&nbsp;
-<pre>The <tt>fo</tt> function is currently overloaded as follows:</pre>
-
-<pre>&nbsp; function fo (Arg: unsigned)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: signed)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: std_logic_vector)&nbsp; return string;
-&nbsp; function fo (Arg: std_ulogic_vector) return string;
-&nbsp; function fo (Arg: bit_vector)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: integer)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: std_ulogic)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: bit)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: boolean)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;&nbsp;
-&nbsp; function fo (Arg: character)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: string)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;
-&nbsp; function fo (Arg: time)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return string;</pre>
-
-<p><br>To support null-terminated strings, the function <tt>fo</tt>(Arg:
-string) processes <tt>Arg</tt> up to the first <tt>NUL</tt> character,
-if any. If you want the whole string to be outputted you can just enter
-the string as a direct argument in <tt>fprint</tt>.&nbsp; See also the
-examples in the testbench.
-<pre>
-<hr SIZE=1 NOSHADE WIDTH="100%"></pre>
-
-<h1>
-<a NAME="PCK_FIO_format_0"></a>Format specifiers</h1>
-The general format of a format specifier is:
-<pre>&nbsp;&nbsp; %[-][n]c</pre>
-The optional <b>-</b> sign specifies left justified output; default is
-right justified.
-<p>The optional number <b>n</b> specifies a field-width. If it is not specified,
-<tt>fprint</tt>
-does something reasonable.
-<p><b>c</b> is the conversion specifier. Currently the following conversion
-specifiers are supported:
-<dl COMPACT>
-<dt>
-<a NAME="PCK_FIO_r_0"></a><b>r</b></dt>
-
-<dd>
-reasonable output format (inspired by Synopsys VSS)</dd>
-
-<dl COMPACT>Prints the ``most reasonable'' representation e.g. hex for
-unsigned, signed and other bit-like vectors (not preferred for integers)</dl>
-
-<dt>
-<a NAME="PCK_FIO_b_0"></a><b>b</b></dt>
-
-<dd>
-bit-oriented output</dd>
-
-<dt>
-<a NAME="PCK_FIO_d_0"></a><b>d</b></dt>
-
-<dd>
-decimal output</dd>
-
-<dt>
-<a NAME="PCK_FIO_s_0"></a><b>s</b></dt>
-
-<dd>
-string output (e.g. in combination with 'IMAGE for enum types)</dd>
-
-<dt>
-<a NAME="PCK_FIO_q_0"></a><b>q</b></dt>
-
-<dd>
-``qualified'' string output (shows internal representation from <tt>fo</tt>)</dd>
-
-<dt>
-<a NAME="PCK_FIO__0"></a><b>{}</b></dt>
-
-<dd>
-Iteration operator, used as follows:</dd>
-
-<dd>
-<tt>%n{&lt;format-string>}</tt></dd>
-
-<br>In this case, <b>n</b> is the iteration count and is mandatory. Iteration
-can be nested.</dl>
-
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_special_0"></a>Special characters</h1>
-To print a double quote,&nbsp; use <tt>'""'</tt> in the format string (VHDL
-convention). To print the special characters, <tt>'\'</tt>, and <tt>'%'</tt>,
-escape them with <tt>'\'</tt>. To prevent <tt>'{'</tt> and <tt>'}'</tt>
-from being interpreted as opening and closing brackets in iteration strings,
-escape them with <tt>'\'</tt>.
-<p>A newline is specified in the format string by <tt>'\n'</tt>.
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_things_0"></a>Things to notice</h1>
-The fprint function expands into VHDL <tt>write</tt> and <tt>writeline</tt>
-commands. As in plain VHDL, nothing will be written to the output file
-until a <tt>writeline</tt> is given. Therefore, don't forget to include
-<tt>'\n'</tt>
-commands in the format string, or it ``will not work''.
-<p>The preferred format specifier for integers is, naturally, <b>%d</b>.
-This calls the VHDL <tt>write</tt> for integers. If you specify a field
-width that is too small, the field will automatically be expanded. If you
-use <b>%r</b> for integers, the field is not expanded automatically, which
-means that some digits are simply thrown away. This may sometimes be useful
-but it is also dangerous. Look at the test bench output for differences
-between <b>%d</b> and <b>%r</b> output.
-<p>When using the <b>%d</b> format specifier, the VHDL constraints for
-the allowed integer range apply.
-<p>In VHDL, signed/unsigned types have been standardized only relatively
-recently, in the package <tt>IEEE.numeric_std</tt>. The lack of a standard
-has caused (and is causing) portability issues. The most popular non-standard
-package that defines signed/unsigned is <tt>IEEE.std_logic_arith</tt> from
-Synopsys. PCK_FIO works with both packages,&nbsp; but refers to the standard
-package <tt>IEEE.numeric_std</tt> by default. To use <tt>IEEE.std_logic_arith</tt>
-instead, replace the reference to <tt>IEEE.numeric_std</tt> in the source
-code.&nbsp; This needs to be done consistently in a design database (e.g.
-in the PCK_FIO test bench as well).
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_methodology_0"></a>Methodology notes</h1>
-The obvious application for <tt>fprint</tt> is in test benches, to produce
-output files that trace the simulation behavior.
-<p>Another interesting application for <tt>fprint</tt> is to produce info,
-warning and error messages in your models. As it can take arguments, <tt>fprint</tt>
-is much better suited for this task than VHDL's <tt>assert</tt> or <tt>report</tt>
-statements. Actually <tt>fprint</tt> produces its own (few) warning messages.
-<p>An advanced usage is the generation of test vectors in a specific format.
-Instead of using the <tt>fo </tt>functions, you can write your own set
-of functions that return the symbols of a specific test format in a way
-that is understandable to the <tt>fprint</tt> format specifiers. As an
-example, when a high output value should be represented using the symbol
-'H' it suffices to write a conversion function that returns "B:H" and call
-it in combination with the <b>%b</b> format specifier.
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_parametrization_0"></a>Parametrization</h1>
-Prefix and postfix strings for bit-oriented and hex-oriented output are
-parameterizable in the packages to accommodate different output styles.
-The settings in the distribution are such that hex output is indicated
-by the prefix '0x', while&nbsp; bit output prefix and postfix are empty
-strings.
-<p>You can adapt the output style by modifying the following constants
-in the package header:
-<p>&nbsp;&nbsp;<tt> -- prefix string for hex output</tt>
-<br><tt>&nbsp; -- VHDL style:&nbsp;&nbsp;&nbsp; "X"""</tt>
-<br><tt>&nbsp; -- Verilog style: "h'"</tt>
-<br><tt>&nbsp; -- C style:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; "0x"</tt>
-<br><tt>&nbsp; constant FIO_h_PRE:&nbsp; string := "0x";</tt>
-<p><tt>&nbsp; -- postfix string for hex output</tt>
-<br><tt>&nbsp; -- VHDL style:&nbsp;&nbsp;&nbsp; """"</tt>
-<br><tt>&nbsp; constant FIO_h_POST: string := "";</tt>
-<p><tt>&nbsp; -- prefix string for bit vector output</tt>
-<br><tt>&nbsp; -- VHDL style:&nbsp;&nbsp;&nbsp; "B"""</tt>
-<br><tt>&nbsp; -- Verilog style: "b'"</tt>
-<br><tt>&nbsp; constant FIO_bv_PRE:&nbsp; string := "";</tt>
-<p><tt>&nbsp; -- postfix string for bit vector output</tt>
-<br><tt>&nbsp; -- VHDL style:&nbsp;&nbsp;&nbsp; """"</tt>
-<br><tt>&nbsp; constant FIO_bv_POST: string := "";</tt>
-<p><tt>&nbsp; -- prefix string for bit output</tt>
-<br><tt>&nbsp; -- VHDL style:&nbsp;&nbsp;&nbsp; "'"</tt>
-<br><tt>&nbsp; -- Verilog style: "b'"</tt>
-<br><tt>&nbsp; constant FIO_b_PRE:&nbsp; string := "";</tt>
-<p><tt>&nbsp; -- postfix string for bit output</tt>
-<br><tt>&nbsp; -- VHDL style:&nbsp;&nbsp;&nbsp; "'"</tt>
-<br><tt>&nbsp; constant FIO_b_POST: string := "";</tt>
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_test_0"></a>Test bench</h1>
-Included in the distribution are the files <tt>TB_PCK_FIO_1987.vhd and
-TB_PCK_FIO_1993</tt> with a test bench,depending on the standard you're
-running, for the PCK_FIO package. The file <tt>PCK_FIO.out.gold </tt>contains
-the expected output. If you run the test bench it should produce the file
-<tt>PCK_FIO.out</tt>
-that should be identical to <tt>PCK_FIO.out.gold</tt>. The source files
-should be analyzed in a VHDL library <tt>EASICS_PACKAGES</tt>.
-<p>A good way to understand <tt>fprint</tt> is to inspect the test bench
-and what it produces.
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_limitations_0"></a>Known limitations and problems</h1>
-This VHDL package is an implementation of a flexible concept. It is likely
-to be extended and modified in the future. Backward compatibility is not
-guaranteed. Therefore, it is not recommended to give this package the status
-of a company wide standard package (or even worse, a VHDL standard package).
-Rather, it should be linked with a particular project (and it can be regarded
-as a standard package within that project).
-<p>PCK_FIO is available in either standard VHDL Std1076-1987 or standard
-VHDL Std1076-1993. Nevertheless, some simulators/versions have problems
-with the package. The following is an overview of currently known issues:
-<br>&nbsp;
-<center><table BORDER COLS=2 WIDTH="80%" NOSAVE >
-<caption>PCK_FIO_1987 and various simulators/versions</caption>
-
-<tr>
-<th>Simulator</th>
-
-<th>PCK_FIO_1987</th>
-</tr>
-
-<tr>
-<td>Synopsys VSS 3.5 and earlier</td>
-
-<td>Incorrect (all zero) output in compiled mode</td>
-</tr>
-
-<tr>
-<td>Synopsys VSS 97.01</td>
-
-<td>OK</td>
-</tr>
-
-<tr>
-<td>Synopsys VSS/Scirocco 2000.02</td>
-
-<td>Incorrect output in compiled mode, interpreted mode works</td>
-</tr>
-
-<tr>
-<td>Mentor quickhdl</td>
-
-<td>OK</td>
-</tr>
-
-<tr NOSAVE>
-<td NOSAVE>Modeltech modelsim</td>
-
-<td>OK</td>
-</tr>
-
-<tr>
-<td>Cadence Leapfrog</td>
-
-<td>Should work with 4.4.1
-<br>Mysterious problems have been reported - please run the test bench
-and report problems</td>
-</tr>
-</table></center>
-
-<br>&nbsp;
-<center><table BORDER COLS=2 WIDTH="80%" NOSAVE >
-<caption>PCK_FIO_1993 and various simulators/versions</caption>
-
-<tr NOSAVE>
-<th NOSAVE>Simulator</th>
-
-<th NOSAVE>PCK_FIO_1993</th>
-</tr>
-
-<tr>
-<td>Synopsys VSS/Scirocco 2000.02</td>
-
-<td>Compile errors due to improper handling of files by Synopsys</td>
-</tr>
-
-<tr>
-<td>Synopsys VSS/Scirocco 2000.06</td>
-
-<td>works fine</td>
-</tr>
-
-<tr>
-<td>Modeltech modelsim 5.4c and higher</td>
-
-<td>OK</td>
-</tr>
-</table></center>
-
-<p>Although the package name suggests file IO, it only does file output.
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-<h1>
-<a NAME="PCK_FIO_author_0"></a>Author</h1>
-<a href="mailto:jand@easics.be">Jan Decaluwe</a>
-<p>
-<hr SIZE=1 NOSHADE WIDTH="100%">
-</body>
-</html>