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Author SHA1 Message Date
jens 3a8641003e - added pin non-maskable interrupt (NMI). 
Exception vector is reset vector at (X"BFC00000")


Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@497 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-10-03 17:01:36 +00:00
jens 2424f52409 - added configurable endian flags 
- added more programs
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@496 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-10-03 16:50:16 +00:00
jens 237fc3d163 - changes, changes 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@495 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-10-03 16:49:32 +00:00
jens 21f33a1768 - added exception vector table. 
S/W can write exception handler entry to this table.
  Exception handler can now reside anywhere in memory.

Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@494 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-10-03 16:48:28 +00:00
jens f706de00bb - _irq_dispatch(): IP masked by IM in software 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@493 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-10-03 16:45:29 +00:00
jens f3d4b8bdb3 - Hex reader entered at reset if GPIO.3 is active (ML402 South Button) 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@492 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-10-03 16:44:02 +00:00
jens 48da5e410e - Flush of I/D-cache at boot 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@491 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-10-03 16:43:00 +00:00
jens e7b85e0138 - added pin non-maskable interrupt (NMI). 
Exception vector is reset vector at (X"BFC00000")


Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@490 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-10-03 16:41:26 +00:00
jens c5027772aa - added pin non-maskable interrupt (NMI). 
Exception vector is reset vector at (X"BFC00000")
-  Interrupt pending flags (IP) are not masked in hardware by IM.

Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@489 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-10-03 16:40:29 +00:00
jens 63b60eee52 update 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@488 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-08-09 16:53:45 +00:00
jens 830f840b83 - minor changes 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@487 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-08-08 18:54:45 +00:00
jens 3d02793488 - detailed EX_stage according to implementation 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@486 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-08-08 17:25:09 +00:00
jens 27d59cb442 - COP dout generated from MEM_ex_result and DMEM_din with multiplexer, to reduce fanout of MEM.data. 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@485 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-08-08 14:00:28 +00:00
jens 1e0fc89d3a - added COP data lines to pipeline 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@484 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-08-08 12:39:24 +00:00
jens 2316880678 minor changes 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@483 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-08-08 12:39:01 +00:00
jens e2da4a5108 update 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@482 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-08-08 12:38:22 +00:00
jens 331590cc36 - Status.TS tied high to indicate absence of an MMU 
- Removed possibility of writng read-only status bits
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@481 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-08-08 12:37:43 +00:00
jens 874ed6f824 del 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@480 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-08-07 12:04:54 +00:00
jens bea098d743 - doubled I-Cache size to 32kByte 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@479 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-10 09:47:24 +00:00
jens 1fe9a2c398 - replaced comparator-based fill-stage with rom-based fill-stage 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@478 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-09 19:19:03 +00:00
jens 6449f3fa78 - minor changes (better timing) 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@477 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-08 22:19:35 +00:00
jens 1884f3158c - minor changes (bug) 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@476 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-08 21:48:31 +00:00
jens 9794a67ba6 - Reset vector is now injected during reset like an ordinary exception. 
This minimizes pc.nxt MUX (Better timing)
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@475 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-08 21:44:27 +00:00
jens 6f74cd1662 - removed register output latch (latch introduced global clock buffer, which is deprecated) 
- CPU is configured as BIG-endian
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@474 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-06 21:35:03 +00:00
jens f046307aa9 - removed reference to fifo_sync_dist. 
Use fifo_sync instead and specified ditributed ram_style
  in XCF-file during synthesis

Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@473 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-06 21:30:23 +00:00
jens 0edf614e5e - removed reference to fifo_sync_dist. 
Use fifo_sync instead and specified ditributed ram_style
  in XCF-file during synthesis

Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@472 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-06 10:36:58 +00:00
jens eabf73aa4f - renamed pc.is_branch:boolean to pc.branch_take:std_logic 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@471 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-05 22:07:19 +00:00
jens 3de1c312bb - removed register output latch (latch introduced global clock buffer, which is deprecated) 
- added separate reg_pointer for read/write
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@470 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-05 11:07:02 +00:00
jens 1c17d74ae1 - removed INT_O_TX from UART. Use now common INT_O for RX/TX 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@469 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-03 09:30:58 +00:00
jens 134119db33 - bugfix: ICACHE_invalidate_at() after user-break was missing 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@468 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-02 16:23:01 +00:00
jens f6ce6d39e7 - removed timer stuff 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@467 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-02 16:23:00 +00:00
jens fc342f5734 - added timer stuff 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@466 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-02 16:21:48 +00:00
jens 52a8946996 - added global EL/EB switch for convenient switching between endianess 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@465 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-02 16:20:33 +00:00
jens 22149e3dfd - added searchdirs 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@464 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-02 16:19:52 +00:00
jens b9bdef1e30 - bootloader is left in kernel-mode 
- improved flash error handling
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@463 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-02 16:19:31 +00:00
jens efa56c97f2 - added error macros 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@462 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-02 16:18:44 +00:00
jens a2a17fd24a - improved erase/program failure detection 
- added block_lock/unlock functions
- locked blocks are unlocked automatically during erase
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@461 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-02 16:18:20 +00:00
jens 66984e5b25 - added timer and error macros 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@460 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-02 16:16:49 +00:00
jens b5e1d45b20 - added test color register base + 0x80 
- control signals derived from register file are noe registered for better timing
- mem_offset updated from vga_mem_offset wehn new frame begins
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@459 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-05-01 19:26:43 +00:00
jens 4c309f1eef - SR(7 .. 0) are not writable in user-mode 
- registered 'ctrl_out.int' for better timing
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@458 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-04-27 08:23:08 +00:00
jens 20dc046c75 - status register is always writable 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@457 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-04-19 17:57:33 +00:00
jens d97c9dd6ec - added interrupt enable 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@456 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-04-19 17:56:47 +00:00
jens cd867dad7d - added 2. Interrupt timer 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@455 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-04-17 22:49:31 +00:00
jens 2e57a02355 - changed Exception vector from 0x80000180 to 0x80000080 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@454 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-04-17 20:30:57 +00:00
jens ef6b247b01 Initial version 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@453 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-04-17 20:30:56 +00:00
jens 68429fd3b0 - many new tests 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@452 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-04-15 14:13:41 +00:00
jens 917ceced01 - switched to big-endian biuld 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@451 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-04-15 14:13:00 +00:00
jens 69a654f218 - added gunzip, life and r3 
- switched to big-endian biuld
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@450 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-04-15 14:12:42 +00:00
jens 83d260fc0d - Minor changes 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@449 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-04-15 14:11:46 +00:00
jens 79de05d54c Initial version 
Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@448 cc03376c-175c-47c8-b038-4cd826a8556b
 2009-04-15 14:11:45 +00:00