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10,124 Commits 7 Branches 121 Tags 500 MiB
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550 Commits

Author SHA1 Message Date
Thomas Harte
315e0b4545 Add experimental 6809 opcode decoder. 
Just a pleasant distraction, for now.
 2023-03-17 21:20:35 -04:00
Thomas Harte
8808014a85 Add AddressingMode::ExtensionWord to the executor. 2022-12-19 11:07:58 -05:00
Thomas Harte
6832cbeb31 Attempt fully to tie together 68020+ addressing. 2022-12-19 10:38:51 -05:00
Thomas Harte
08b3c42a5c Edge further towards supporting full extension words. 2022-12-10 16:22:16 -05:00
Thomas Harte
95c526d957 Start arrangements for full extension words. 2022-11-30 16:21:35 -05:00
Thomas Harte
5813e2b6c6 Round out the list of operand flags. 2022-11-14 15:58:58 -05:00
Thomas Harte
ccadf69630 Add test of operand_flags and operand_size; add entries for missing 68000 and 68010 instructions. 2022-10-31 15:15:05 -04:00
Thomas Harte
bbd2cd47ea Decode [MUL/DIV][U/S].l. 2022-10-30 11:32:36 -04:00
Thomas Harte
63ad2e8263 Decode EXTB.l. 2022-10-30 11:20:43 -04:00
Thomas Harte
255d2f3486 Attempt LINK.l and CHK.l. 2022-10-29 21:42:53 -04:00
Thomas Harte
6ad1d74ddd Parse and record duality of CHK2/CMP2. 2022-10-29 21:32:48 -04:00
Thomas Harte
12ca79e645 Decode CAS2. 2022-10-28 14:02:49 -04:00
Thomas Harte
85df54ee7d Decode CAS. 2022-10-28 13:57:00 -04:00
Thomas Harte
8a8c044976 Support up to 15 extension words on a Preinstruction; use that to describe PACK/UNPK. 
TODO: reconcile when to use that field versus the ExtensionWord operand. Probably only when operands are full?
 2022-10-28 13:36:40 -04:00
Thomas Harte
f6a72dc2b4 Switch BFEXTU and BFFFO. 2022-10-27 12:13:13 -04:00
Thomas Harte
7d82b2ad12 Fix PACK operation code. 2022-10-27 10:52:07 -04:00
Thomas Harte
c2b8cbfefc Add text conversions. 2022-10-27 10:12:52 -04:00
Thomas Harte
53140c016e Disable bitcodes for operations that aren't otherwise yet present. 2022-10-27 10:09:16 -04:00
Thomas Harte
3f80df1feb Additional TST modes become available on the 68020. 2022-10-27 09:49:20 -04:00
Thomas Harte
cabf1a052c Fill in operand sizes and flags for the 68010 extensions. 2022-10-27 09:39:00 -04:00
Thomas Harte
8ff9f27b91 Decode MOVES. 2022-10-26 13:34:01 -04:00
Thomas Harte
ae2419e283 Decode MOVEC. 2022-10-26 12:50:15 -04:00
Thomas Harte
c1f0eed0a3 Decode MOVE from CCR. 2022-10-26 12:39:40 -04:00
Thomas Harte
4e5a80e23a Fix model tests. 2022-10-25 22:36:00 -04:00
Thomas Harte
46fee9c53a Add BKPT and RTD. 2022-10-25 22:35:44 -04:00
Thomas Harte
7ba6c78d14 MOVE from CCR, MOVEC and MOVES are on the 68010. 2022-10-25 21:27:23 -04:00
Thomas Harte
83b9fc3318 Declare TRAPcc operand size. 2022-10-25 12:20:40 -04:00
Thomas Harte
1ceabb30b0 Fully decode TRAPcc. 2022-10-25 12:19:03 -04:00
Thomas Harte
f8cb3ca8b5 Resolve transient GCC warning. 2022-10-25 10:20:06 -04:00
Thomas Harte
d8a11eaba7 Avoid explicit specialisation in non-namespace scope. 2022-10-25 10:13:12 -04:00
Thomas Harte
ab37b00356 Add model constraint to DIVS.l. 2022-10-25 10:04:36 -04:00
Thomas Harte
b4fcf92a62 Output extension words as if immediates. 2022-10-25 09:58:01 -04:00
Thomas Harte
38c531fd5a Accept that a uint8_t isn't always going to be large enough; split decoding by minimum processor. 2022-10-25 09:50:19 -04:00
Thomas Harte
8c670d2105 Add decodes for TRAPcc and PACK, discovering it's three operand (sort of). 2022-10-23 11:46:47 -04:00
Thomas Harte
9a56d053f8 Introduce/extend 68k enums to cover 68020 instruction set. 2022-10-22 15:20:30 -04:00
Thomas Harte
cb0e259339 Start the process of decoding 68020 operations. 2022-10-21 15:28:29 -04:00
Thomas Harte
ec728ad573 Fix ADD/SUBX carry. 2022-10-19 22:17:51 -04:00
Thomas Harte
bc9ddacb8d Improve commentary. 2022-10-19 14:40:29 -04:00
Thomas Harte
979bf42541 Fix ASL overflow test. 2022-10-18 22:43:17 -04:00
Thomas Harte
d09473b66f Move common negative and zero logic into Status. 2022-10-18 14:51:51 -04:00
Thomas Harte
b31b4a5d10 Reformulate NOT in terms of EOR, and clean up elsewhere. 2022-10-18 12:17:55 -04:00
Thomas Harte
5560a0ed39 Fix overflow test for ASL. 2022-10-18 11:47:36 -04:00
Thomas Harte
a1ae7c28b2 Add various insurances against undefined behaviour. 2022-10-18 11:30:40 -04:00
Thomas Harte
fb2b7969a2 Add TODO to self on undefined behaviour. 2022-10-17 23:14:14 -04:00
Thomas Harte
abb19e6670 Populate carry whenever count != 0, regardless of modulo. 2022-10-17 22:57:21 -04:00
Thomas Harte
555250dbd9 Don't trample on X before use. 2022-10-17 22:19:35 -04:00
Thomas Harte
8148397f62 Fill in comments, eliminate u/s_extend16 macros. 2022-10-17 15:37:13 -04:00
Thomas Harte
f095bba1ca Eliminate bitwise macros. 2022-10-17 15:21:54 -04:00
Thomas Harte
ee3a3df0b5 Eliminate SBCD macro. 2022-10-17 15:12:38 -04:00
Thomas Harte
aff1caed15 Clean up formatting. 2022-10-17 15:05:23 -04:00