179 Commits

Author	SHA1	Message	Date
Thomas Harte	8176bb6f79	Expose issues with TST and TAS.	2022-05-06 12:18:56 -04:00
Thomas Harte	9c266d4316	Proceed to unimplemented TST.	2022-05-06 11:33:57 -04:00
Thomas Harte	190a351a29	Fix address writeback.	2022-05-06 09:56:01 -04:00
Thomas Harte	607ddd2f78	Preserve MOVEM order in Operation.	2022-05-06 09:45:06 -04:00
Thomas Harte	fed79a116f	Be overt about the size being described here.	2022-05-06 09:22:38 -04:00
Thomas Harte	5db0ea0236	Add note for my tomorrow self.	2022-05-05 21:11:02 -04:00
Thomas Harte	06fe320cc0	Correct source counting, but this leaves the operands still being the wrong way around.	2022-05-05 21:06:53 -04:00
Thomas Harte	f7991e18de	Makes a failed attempt to implement MOVEM to registers.	2022-05-05 20:32:21 -04:00
Thomas Harte	d7d0a5c15e	Implement MOVEM to memory.	2022-05-05 18:51:29 -04:00
Thomas Harte	47f4bbeec6	Switch to a contiguous block of 16 registers.	2022-05-05 15:31:59 -04:00
Thomas Harte	9ab70b340c	Route MOVEM appropriately.	2022-05-05 12:42:57 -04:00
Thomas Harte	70cdc2ca9f	Fix MOVEP to register. ... Advance to lack of MOVEM.	2022-05-05 12:37:47 -04:00
Thomas Harte	f63a872387	BTST does not write back.	2022-05-05 12:32:15 -04:00
Thomas Harte	67462c2f92	Rewire MOVEP.	2022-05-05 12:27:36 -04:00
Thomas Harte	4a4e786060	Hit a realisation: write-back isn't going to work with MOVEP as formulated.	2022-05-05 09:26:26 -04:00
Thomas Harte	665f2d4c00	Attempts MOVEP.	2022-05-05 09:00:33 -04:00
Thomas Harte	64586ca7ba	Implement BTST/etc.	2022-05-04 20:57:22 -04:00
Thomas Harte	15c90e546f	Fix rotates and shifts to memory.	2022-05-04 19:44:59 -04:00
Thomas Harte	5aabe01b6d	Mostly fix LINK and UNLK.	2022-05-04 08:41:55 -04:00
Thomas Harte	5d1d94848c	Take a bash at LINK and UNLK.	2022-05-04 08:26:11 -04:00
Thomas Harte	7d10976e08	Add LINK and UNLINK to operand_flags.	2022-05-03 20:51:02 -04:00
Thomas Harte	d3b55a74a5	Fix LEA, proceed to non-functional LINK and UNLK.	2022-05-03 20:45:36 -04:00
Thomas Harte	de58ec71fd	Fix EXT, SWAP.	2022-05-03 20:17:36 -04:00
Thomas Harte	052ba80fd7	Add enough wiring to complete but fail EXT and JMP/JSR.	2022-05-03 15:49:55 -04:00
Thomas Harte	39f0ec7536	Get far enough through CHK to realise that MOVEM probably needs to be divided by direction.	2022-05-03 15:40:04 -04:00
Thomas Harte	af973138df	Correct decoding of Bcc.b, satisfying Bcc and BSR tests.	2022-05-03 15:32:54 -04:00
Thomas Harte	5a87506f3d	Fix Bcc, making decision that add_pc is relative to start of instruction.	2022-05-03 15:21:42 -04:00
Thomas Harte	90f0005cf2	Proceed to failing Bcc and flagging up my lack of an implementation for BSR.	2022-05-03 14:45:49 -04:00
Thomas Harte	d8b3748d24	Fix Scc size, DBcc behaviour.	2022-05-03 14:40:51 -04:00
Thomas Harte	1b224c961e	Fix Scc, add operand flags for DBcc.	2022-05-03 14:23:57 -04:00
Thomas Harte	b6ffff5bbd	Distinguish [ADD/SUB]QA from [ADD/SUB]Q.	2022-05-03 14:17:26 -04:00
Thomas Harte	b3cf13775b	Consume operand_flags into Instruction.hpp.	2022-05-03 11:09:57 -04:00
Thomas Harte	c61809f0c4	Add CMPAl.	2022-05-03 09:20:02 -04:00
Thomas Harte	2f2d6bc08b	Correct CMPw.	2022-05-03 09:05:34 -04:00
Thomas Harte	1bb809098c	Switch — messily — to a more compact way of indicating sequence.	2022-05-03 09:04:54 -04:00
Thomas Harte	011506f00d	Add basic exceptions.	2022-05-02 21:27:58 -04:00
Thomas Harte	25ab478461	Fix immediate byte and word fetches.	2022-05-02 20:17:44 -04:00
Thomas Harte	fc9a35dd04	Test add/sub, add an exception for invalid Sequences.	2022-05-02 20:09:38 -04:00
Thomas Harte	7efe30f34c	Fix (d8, _, Xn) calculation.	2022-05-02 15:09:59 -04:00
Thomas Harte	3827ecd6d3	Proceed to complete test running.	2022-05-02 12:57:45 -04:00
Thomas Harte	14532867a4	Sneaks towards testing EXT.	2022-05-02 08:00:56 -04:00
Thomas Harte	73f340586d	Proceed to building, but failing tests.	2022-05-02 07:45:07 -04:00
Thomas Harte	56fe00c5fb	Correct errors preparatory to Executor's lack of flow controller actions.	2022-05-01 20:40:57 -04:00
Thomas Harte	3c26177239	Provide both compile- and run-time operation selection options.	2022-05-01 17:39:56 -04:00
Thomas Harte	fe8f0d960d	Equivocate. ... (Specifically: addresses cannot generally be obtained in advance, as they are often the product of registers, but things like displacements, immediate values and absolute addresses can)	2022-05-01 15:30:03 -04:00
Thomas Harte	c72caef4fd	Correct further size specifiers.	2022-05-01 15:21:58 -04:00
Thomas Harte	0720a391e8	Correct address register mutations.	2022-05-01 15:18:06 -04:00
Thomas Harte	d16ac70a50	Correct include path.	2022-05-01 15:14:12 -04:00
Thomas Harte	fc8e020436	Improve field name.	2022-05-01 15:12:13 -04:00
Thomas Harte	6b073c6067	Attempt to round out addressing modes, shift to a header, as per templating on BusHandler.	2022-05-01 15:10:54 -04:00
Thomas Harte	0b19bbff8d	Marginally refactor, to avoid repetition of read/write branch.	2022-05-01 13:09:28 -04:00
Thomas Harte	42927c1e32	Establish more of the 680x0 executor loop.	2022-05-01 13:00:20 -04:00
Thomas Harte	df999978f1	Figure out what the call to perform should look like. ... Albeit that this class doesn't currently offer any of the proper flow control actions.	2022-04-30 20:34:44 -04:00
Thomas Harte	43cd740a7b	Shuffle Step to give meaning to the LSB.	2022-04-30 20:33:35 -04:00
Thomas Harte	52f355db24	Decision: operation is not a template parameter. Hence can use condition as fully typed.	2022-04-30 14:08:51 -04:00
Thomas Harte	a86c5ccdc9	Merge branch '68000Perform' of github.com:TomHarte/CLK into 68000Perform	2022-04-30 14:02:23 -04:00
Thomas Harte	e532562108	Merge branch 'master' into 68000Perform	2022-04-30 14:02:17 -04:00
Thomas Harte	8d24c00df2	Include decoded condition in Preinstruction.	2022-04-30 09:00:47 -04:00
Thomas Harte	f4074e0bba	Add basic status.	2022-04-30 08:38:28 -04:00
Thomas Harte	e4426dc952	Introduce calculate EA steps.	2022-04-29 20:30:48 -04:00
Thomas Harte	9359f6477b	Start drafting an Executor.	2022-04-29 17:12:06 -04:00
Thomas Harte	a103f30d51	Attempt to game out LEA, PEA. Add various special MOVEs.	2022-04-29 14:43:58 -04:00
Thomas Harte	78b60dbd1a	Evict MOVEM and MOVEP, enable TRAP and TRAPV, complete CHK.	2022-04-29 14:43:30 -04:00
Thomas Harte	cde75a1c00	Make steps more visible.	2022-04-29 11:26:39 -04:00
Thomas Harte	b9d243552c	MOVEs don't read from operand 2.	2022-04-29 11:22:06 -04:00
Thomas Harte	85242ba896	Add to Xcode project, template on Model as per CLR being odd. Fill in some obvious answers.	2022-04-29 11:10:14 -04:00
Thomas Harte	d16dab6f62	Starts introducing a sequencer, to resolve responsibility of perform.	2022-04-29 10:40:19 -04:00
Thomas Harte	8066b19f93	Correct typos.	2022-04-29 07:57:02 -04:00
Thomas Harte	abd2a831a3	Added a further ambiguity.	2022-04-29 05:08:44 -04:00
Thomas Harte	824d3ae3f7	Conclusion: a union does produce better code. ... (But needn't be so verbose)	2022-04-29 04:51:02 -04:00
Thomas Harte	727a14c6f9	Add notes for myself on decisions yet to make.	2022-04-29 03:53:17 -04:00
Thomas Harte	13d20137d3	Tackle two lingering references to exception_handler.	2022-04-29 03:38:23 -04:00
Thomas Harte	9680566595	Include in automated build, temporarily.	2022-04-28 20:42:44 -04:00
Thomas Harte	33c9ea2cf7	A flow controller feels more natural than an exception handler.	2022-04-28 20:42:04 -04:00
Thomas Harte	1d8d2b373b	Port all simple instruction bodies.	2022-04-28 16:55:47 -04:00
Thomas Harte	611b472b12	Add evaluate_condition, to check standard 68000 condition codes.	2022-04-28 16:54:57 -04:00
Thomas Harte	bb73eb0db3	Start working on an isolation of 68000 instruction execution.	2022-04-28 15:35:40 -04:00
Thomas Harte	39261436c8	Remove unused type alias.	2022-04-27 19:53:32 -04:00
Thomas Harte	9cbbb6e508	Adjust path to match namespace; add to Qt project.	2022-04-27 08:05:36 -04:00