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