1149 Commits

Author	SHA1	Message	Date
Thomas Harte	a72dd96dc6	Page boundary crossing is free outside of emulation mode.	2022-06-22 15:31:30 -04:00
Thomas Harte	944e5ebbfa	Take another run at IO addresses.	2022-06-22 15:28:11 -04:00
Thomas Harte	76767110b7	Fix overflow for 8-bit calculations; essentially a revert for ADC.	2022-06-22 15:18:47 -04:00
Thomas Harte	7dcfa9eb65	65816: improve decimal calculations, posted IO addresses, read/write during redundant read-modify-write cycle.	2022-06-21 14:33:06 -04:00
Thomas Harte	ec98736bd7	Ensure IO cycles don't produce an address of (PC+1).	2022-06-21 11:41:05 -04:00
Thomas Harte	586ef4810b	Add restart_operation_fetch, to aid with testing.	2022-06-18 16:25:57 -04:00
Thomas Harte	a0bc332fe6	Taking a second parse, prefer non-lookup-table solutions.	2022-06-17 11:55:38 -04:00
Thomas Harte	b0ab5b7b62	Simplify Microcycle helpers.	2022-06-16 21:34:24 -04:00
Thomas Harte	dc8103ea82	Fix return address following a STOP.	2022-06-16 15:10:35 -04:00
Thomas Harte	7d00b50e13	Fix upper/lower_data_select; simplify value8_low.	2022-06-15 21:11:31 -04:00
Thomas Harte	12b058867e	Correct very minor typo.	2022-06-15 19:34:54 -04:00
Thomas Harte	8ff09a1923	Fix value8_high.	2022-06-15 19:34:49 -04:00
Thomas Harte	62fa0991ed	Disallow copying, add some basic asserts.	2022-06-15 19:34:43 -04:00
Thomas Harte	24823233ff	Add spurious interrupt support.	2022-06-15 11:00:27 -04:00
Thomas Harte	bd056973ba	Don't allow STOP state to block execution.	2022-06-15 10:56:45 -04:00
Thomas Harte	5420fd5aa3	Fix: new status word is still in prefetch.	2022-06-15 10:54:34 -04:00
Thomas Harte	93615f6647	Apply new status before entering STOP loop.	2022-06-15 10:50:03 -04:00
Thomas Harte	0ace9634ce	Fix MOVEA.	2022-06-14 21:56:48 -04:00
Thomas Harte	48d51759cd	At huge copy-and-paste cost, fix MOVE.l.	2022-06-14 21:22:28 -04:00
Thomas Harte	bfd0b683bf	Extend MOVE.b fix to cover MOVE.w.	2022-06-14 17:04:11 -04:00
Thomas Harte	61e0f60e94	Add specialised MOVE.b to correct bus sequencing. ... This is a bit of a trial balloon; .w and .l to come.	2022-06-13 21:49:00 -04:00
Thomas Harte	7fa715e37a	Provide more thorough documentation.	2022-06-13 15:27:23 -04:00
Thomas Harte	e066546c13	Resolve PEA timing errors.	2022-06-13 14:08:42 -04:00
Thomas Harte	4a75691005	Avoid double conditional for CalcEffectiveAddressIdleFor8bitDisplacementAndPreDec.	2022-06-13 10:27:22 -04:00
Thomas Harte	8ada73b283	Use the outer switch for addressing mode dispatch, saving a lot of syntax.	2022-06-13 08:57:49 -04:00
Thomas Harte	2a9a05785c	Bus and address error don't affect interrupt level.	2022-06-11 21:10:24 -04:00
Thomas Harte	c3345dd839	Fix MOVEM timing.	2022-06-10 21:52:07 -04:00
Thomas Harte	aec4bf9d45	Correct TAS timing.	2022-06-10 15:57:35 -04:00
Thomas Harte	f8643a62e6	Change RTE and RTR read order.	2022-06-09 21:47:28 -04:00
Thomas Harte	64053d697f	Take improved guess at address error stacking order.	2022-06-09 16:17:09 -04:00
Thomas Harte	da8e6737c6	Fix standard exception stack write order.	2022-06-08 16:15:11 -04:00
Thomas Harte	670201fcc2	Reset time debt upon 'reset'.	2022-06-08 16:03:16 -04:00
Thomas Harte	ab35016aae	Clear any time debt upon phoney reset.	2022-06-08 15:12:32 -04:00
Thomas Harte	6efb9b24e0	Ensure that a phoney reset gets the proper vector.	2022-06-08 14:44:15 -04:00
Thomas Harte	079c3fd263	Abort address error-causing exceptions before they begin.	2022-06-08 14:43:31 -04:00
Thomas Harte	8cbf929671	Don't duplicate work that the RESET program already does.	2022-06-08 11:42:56 -04:00
Thomas Harte	9009645cea	Add 'reset' functions.	2022-06-07 16:55:39 -04:00
Thomas Harte	a4baa33e2f	Ensure RTE triggers a stack pointer change if needed.	2022-06-06 16:08:50 -04:00
Thomas Harte	cfafbfd141	Fix interrupt acknowledge cycle: signals and data size.	2022-06-04 21:23:57 -04:00
Thomas Harte	542126194a	Capture interrupt input at the end of an access cycle, not the beginning. ... All still a guess.	2022-06-03 15:39:53 -04:00
Thomas Harte	02b6ea6c46	Factor out would-accept-interrupt test, per uncertainty re: level 7.	2022-06-03 08:31:56 -04:00
Thomas Harte	6fcaf3571e	Fix bus/address error exception frame: order and contents.	2022-06-03 08:27:49 -04:00
Thomas Harte	f8e933438e	Add missing tail cost.	2022-06-02 12:26:25 -04:00
Thomas Harte	2bd20446bb	Merge branch '68000Mk2' of github.com:TomHarte/CLK into 68000Mk2	2022-06-02 05:39:32 -04:00
Thomas Harte	659e4f6987	Include fixed cost of rolls. Which includes providing slightly more information to did_shift.	2022-06-01 20:30:51 -04:00
Thomas Harte	cd5f3c90c2	Ensure proper resumption after a forced exit in will_perform.	2022-06-01 15:27:09 -04:00
Thomas Harte	91a6911a51	Correct ADDA/SUBA timing.	2022-06-01 15:03:03 -04:00
Thomas Harte	0857dd0ae5	Include fixed base cost in MULU and MULS.	2022-06-01 14:05:23 -04:00
Thomas Harte	62ed1ca2fd	Fix MOVE CCR permissions.	2022-06-01 09:22:47 -04:00
Thomas Harte	d1298c8863	Correct MOVE timing without breaking PEA, LEA, etc.	2022-06-01 09:06:08 -04:00