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5,238 Commits 8 Branches 121 Tags 496 MiB
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317 Commits

Author SHA1 Message Date
Thomas Harte
faef917cbd Improves resizeable microcycle test. 2019-06-24 10:55:22 -04:00
Thomas Harte
d27ba90c07 Attempts to introduce more rigour to variable-length instruction handling. 2019-06-24 10:43:28 -04:00
Thomas Harte
db4ca746e3 Introduces BSET tests, fixes BSET timing. 2019-06-23 22:53:37 -04:00
Thomas Harte
d50fbfb506 Imports EXG and PEA tests, and fixes EXG timing. 2019-06-23 22:21:25 -04:00
Thomas Harte
86fdc75feb Incorporates RTR test, adding a ProcessorState helper. 2019-06-23 18:37:32 -04:00
Thomas Harte
b63231523a Completes import of ROL tests. 2019-06-23 17:33:12 -04:00
Thomas Harte
70e296674d Starts import of ROL tests. 
Including time tests, this time.
 2019-06-22 22:42:57 -04:00
Thomas Harte
8c8493bc9d Ensures proper loading of the SP at reset. 2019-06-21 18:20:26 -04:00
Thomas Harte
ccfe1b13cb Imports DIVS, MULS and MOVE from SR tests. 
Not all passing.
 2019-06-21 16:03:11 -04:00
Thomas Harte
0c1c10bc66 Introduces a test that proves that DIVS' attempt to set proper timing isn't working. 2019-06-20 19:29:02 -04:00
Thomas Harte
fafd1801fe Introduces first DIVS test, and associated fixes. 2019-06-20 19:02:03 -04:00
Thomas Harte
79d8d27b4c Reintroduces use of locations_by_bus_step_ to decrease 68000 construction time. 2019-06-20 15:10:11 -04:00
Thomas Harte
440f52c943 Incorporates TRAP test. 2019-06-19 21:18:30 -04:00
Thomas Harte
8dace34e63 Imports third-party tests for ABCD, and thereby fixes ABCD. 2019-06-19 18:13:06 -04:00
Thomas Harte
c5b036fedf Ensures aborted decodes don't overwrite prior correct ones. 2019-06-19 17:00:44 -04:00
Thomas Harte
e26ddd0ed5 Corrects address fetches for CMPI.l #, (xxx).w. 2019-06-19 13:52:56 -04:00
Thomas Harte
ca83431e54 Fixed: Scc is a byte operation. 
It was, until now, post-incrementing and pre-decrementing registers other than A7 incorrectly.
 2019-06-19 13:15:12 -04:00
Thomas Harte
00c32e4b59 Further miscellaneous changes to debug logging. All temporary. 2019-06-18 10:34:31 -04:00
Thomas Harte
877b46d2c1 Advances IWM/drive emulation very close to the point of 'Welcome to Macintosh'. 2019-06-15 16:08:54 -04:00
Thomas Harte
bde975a3b9 Possibly mights the tiniest bit of headway with 'the IWM'. 
I'm now pretty sure that my 3.5" drive, which for now is implemented in the IWM (yuck) is just responding to queries incorrectly.
 2019-06-13 22:38:09 -04:00
Thomas Harte
f6f9024631 Corrects Macintosh aspect ratio (and framing). 2019-06-13 18:41:38 -04:00
Thomas Harte
59a94943aa Resolves final set of build warnings. 2019-06-13 10:55:29 -04:00
Thomas Harte
bf4889f238 Reduces warnings to 6. 2019-06-13 10:43:00 -04:00
Thomas Harte
7cc5afd798 Eliminates another couple of implicit type conversion warnings. 2019-06-13 10:30:26 -04:00
Thomas Harte
11ab021672 Further reduces implicit conversion warnings, to 17. 2019-06-13 10:27:49 -04:00
Thomas Harte
feafd4bdae Eliminates further type conversion warnings. 2019-06-13 10:20:17 -04:00
Thomas Harte
d6150645c0 By hook or by crook, mouse input now works. 2019-06-12 22:19:25 -04:00
Thomas Harte
ec5701459c Makes various temporary logging changes. 2019-06-11 19:54:07 -04:00
Thomas Harte
697e094a4e Sketches out the absolute basics of an SCC interface. 2019-06-08 18:47:11 -04:00
Thomas Harte
e9d0676e75 Fiddles further with the tachometer. 2019-06-06 21:36:19 -04:00
Thomas Harte
7591906777 Numerous IWM fixes: the machine now seems to be trying to measure the tachometer. 2019-06-06 18:32:11 -04:00
Thomas Harte
058fe3e986 Fixes some other low-hanging warning fruit. 2019-06-04 16:47:10 -04:00
Thomas Harte
51ee83a427 Resolves a further 11 conversion errors. 2019-06-04 16:34:45 -04:00
Thomas Harte
5b21da7874 Reduces number of warnings to 70. 2019-06-04 16:27:09 -04:00
Thomas Harte
bd7f00bd9c Resolves a further handful of implicit type conversion warnings. 2019-06-04 15:43:44 -04:00
Thomas Harte
4d4ddded6d Fixes register-relative JMP and JSR. 2019-06-03 15:29:50 -04:00
Thomas Harte
881feb1bd3 Adds preliminary parsing of the Disk Copy 4.2 format. 2019-06-02 13:39:25 -04:00
Thomas Harte
035f07877c Reduces conversions to vector. 2019-05-30 12:08:35 -04:00
Thomas Harte
b3d2b4cd37 Fixes the interrupt return address. 2019-05-29 20:27:46 -04:00
Thomas Harte
c86fe9ada9 Ensures replace_write_values works in release builds. 2019-05-29 19:00:53 -04:00
Thomas Harte
ecf93b7822 Eliminates some type conversion warnings. 2019-05-29 14:56:50 -04:00
Thomas Harte
541b75ee6e Further fixes PEA, and OR/AND/EOR Dn, (An). 2019-05-29 14:37:15 -04:00
Thomas Harte
77b08febdb Corrects PEA and adds an additional debugging aid. 2019-05-29 12:47:17 -04:00
Thomas Harte
fcda376f33 Removes three further type conversion warnings. 2019-05-28 21:56:49 -04:00
Thomas Harte
0848fc7e03 Ensures the Mac uses auto vectored interrupts. 2019-05-28 16:24:41 -04:00
Thomas Harte
3bb8d6717f Ensures A7 is correct at end of an UNLINK. 2019-05-28 16:02:42 -04:00
Thomas Harte
5e2496d59c Simplifies and corrects MOVE logic. 2019-05-28 15:17:03 -04:00
Thomas Harte
c52da9d802 Adds some logging preparatory to a MOVE change. 2019-05-28 15:05:42 -04:00
Thomas Harte
0b999ce0e4 Attempts to fix register-relative JSRs. 2019-05-09 06:43:07 -04:00
Thomas Harte
b04bd7069d Corrects Scc and DBcc (xxx).l and (xxx).w. 2019-05-09 06:28:55 -04:00
Thomas Harte
249b0fbb32 Corrects PC on stack after an illegal instruction. 
Also fixed LOG_TRACE functionality.
 2019-05-08 22:36:25 -04:00
Thomas Harte
d8ed8b66f3 Improves carry/extend for ROXL and ROXR. 2019-05-06 21:14:16 -04:00
Thomas Harte
e6ed50383c Corrects PEA and MOVE.l (An)[+], (xxx).L; also adds an extra test that caught the latter. 2019-05-05 22:47:54 -04:00
Thomas Harte
417a3e1540 Adds missing call to flush. 2019-05-03 23:31:12 -04:00
Thomas Harte
fa8c804d47 Makes explicit a few implicit type conversions. 
There's plenty more down this well, alas.
 2019-05-03 23:26:03 -04:00
Thomas Harte
2c9a1f7b16 Restores vector. 2019-05-03 14:50:07 -04:00
Thomas Harte
0ea4c1ac80 Evicts #includes from my namespace. 2019-05-03 14:48:39 -04:00
Thomas Harte
a873ec97eb Also previously missing: vector.h. 2019-05-03 14:43:31 -04:00
Thomas Harte
cc8a65780e Adds further missing includes. 2019-05-03 14:42:36 -04:00
Thomas Harte
c117deb43b Introduces a couple of missing #includes. 2019-05-03 14:37:05 -04:00
Thomas Harte
a0eb20ff1f Tweaks divide-by-zero timing. 2019-05-03 14:29:36 -04:00
Thomas Harte
291e91375f Takes a shot at the synchronous bus. 2019-05-03 14:20:59 -04:00
Thomas Harte
857f74b320 Fixed: the accepted interrupt level now appears on the bus. 2019-05-02 15:47:12 -04:00
Thomas Harte
1d9608efc7 Alters the order of interrupt bus activity, to bring it into line with a real 68000. 2019-05-02 15:25:43 -04:00
Thomas Harte
93616a4903 Completes test of a vectored interrupt. 
Correcting issues uncovered.
 2019-05-02 00:00:09 -04:00
Thomas Harte
bb07206c55 Corrects internet response to work as currently implemented. 
Also makes corrections to the bus error and address error exceptions.
 2019-05-01 21:59:06 -04:00
Thomas Harte
2e5c0811e7 Makes some effort at getting into interrupt processing. 2019-05-01 15:26:36 -04:00
Thomas Harte
f6ac407e4d Takes further steps towards supporting interrupts. 
Specifically:
* introduces the necessary bus signalling; and
* adds corresponding functional steps.

Still to figure out: getting into and out of an interrupt cycle.
 2019-05-01 15:19:24 -04:00
Thomas Harte
078c3135df The 5/3 split of microcycles appears not accurately to model when lines are tested. 
Therefore I've reverted to a more normative 4:4 form.
 2019-04-30 22:09:13 -04:00
Thomas Harte
92568c90c8 Adds support for HALT as an input, and puts some effort into how to calculate E. 2019-04-30 22:07:48 -04:00
Thomas Harte
f1879c5fbc Corrects interrupt level test within STOP. 2019-04-30 19:32:35 -04:00
Thomas Harte
31bb770fdd Implement STOPpages, waits for DTack, and bus and address error exceptions. 2019-04-30 19:24:22 -04:00
Thomas Harte
e430f2658f Adds a test and by that means fixes divide-by-zero exception return addresses. 2019-04-29 23:09:50 -04:00
Thomas Harte
eb4233e2fd Joins some commonalities, shaving about 150 lines of code. 2019-04-29 22:37:23 -04:00
Thomas Harte
6b4c656849 Reverses order of instruction instantiation, reducing total bus step heft by about 11%. 
... since that means inserting more complicated instructions before simpler ones in general, making subset finds more likely.
 2019-04-29 22:20:18 -04:00
Thomas Harte
1b8fada6aa Restores accidentally-cropped functionality. 2019-04-29 22:10:00 -04:00
Thomas Harte
977f9ee831 Takes a run at divide-by-zero exceptions and starts looking towards ways to improve startup time. 2019-04-29 22:08:16 -04:00
Thomas Harte
16fb3b49a5 It leads to a TODO, but implemented decoding and initial setup of STOPpages. 2019-04-29 19:30:00 -04:00
Thomas Harte
3da1b3bf9b Introduces storage for various bus inputs. 2019-04-29 19:22:05 -04:00
Thomas Harte
bc00856c05 Removed TODO; it appears this is just the standard stack frame. 2019-04-29 19:09:20 -04:00
Thomas Harte
52e3dece81 Improves exposition. 2019-04-29 19:07:14 -04:00
Thomas Harte
2c1d8fa18a Adds a check for instruction privilege violation, albeit that I think I need different bus steps. 2019-04-29 19:06:10 -04:00
Thomas Harte
3e34ae67f6 Implements support for the trace flag. 2019-04-29 19:02:59 -04:00
Thomas Harte
ceebecec8d Corrects zero and negative flags for EXT.w. 2019-04-29 17:54:33 -04:00
Thomas Harte
05d1eda422 Fixes crossed-over decoding of EORI and ORI. 2019-04-29 17:45:52 -04:00
Thomas Harte
31f318ad43 Fixes MOVE.bw #, (xxx).w. 2019-04-29 17:41:46 -04:00
Thomas Harte
270f46e147 Normalises CMPl. 2019-04-29 17:27:56 -04:00
Thomas Harte
8564945713 Corrects vector nomination for unrecognised opcodes. 2019-04-29 17:10:33 -04:00
Thomas Harte
7bd7f3fb73 Sign-extends (xxx).w addresses. 2019-04-29 16:55:43 -04:00
Thomas Harte
c466b6f9e7 Factors out the [unit testing] stuff of being a trace-checking 68000 bus handler. 2019-04-29 16:11:01 -04:00
Thomas Harte
d9071ee9f1 Starts sketching out the asynchronous bus. 2019-04-29 13:45:53 -04:00
Thomas Harte
97e118abfa Corrects accidental exclusion of MOVE.bw (xxx).w, [(xxx).w/(xxx).l]. 2019-04-28 23:25:46 -04:00
Thomas Harte
412f091d76 Implements a missing form of BTST. 2019-04-28 23:20:50 -04:00
Thomas Harte
ca1f669e64 Implements MOVEP. 
371 is now the alleged number of missing opcodes. But I'd dare imagine it's more like three or four.
 2019-04-28 22:52:54 -04:00
Thomas Harte
0298b1b3b7 Implements LINK and UNLINK. 
Also starts excluding opcodes that I can't determine the mapping of from the list of those tested against.

Due to those two things together, the latter incomplete: 627 opcodes outstanding. But only STOP and MOVEP remain on my list of things to implement prior to exceptions.
 2019-04-28 17:12:31 -04:00
Thomas Harte
4b1324de77 Takes a run at TRAPV. 
... to leave 1466 as the unimplemented count.
 2019-04-28 15:52:58 -04:00
Thomas Harte
8e8dce9bec Attempts an implementation of CHK. 
1467 is now the official count of things to implement, though I'm starting to get suspicious.
 2019-04-28 15:47:21 -04:00
Thomas Harte
f4350522bf Implements NBCD. 
Now outstanding: 1891.
 2019-04-27 21:29:50 -04:00
Thomas Harte
e2abb66a11 Adds missing addressing modes for ADDA and SUBA. 
... reducing missing opcodes to 1941.
 2019-04-27 17:22:26 -04:00
Thomas Harte
ab5fcab9bf Attempts an implementation of ADDX and SUBX. 
Leaving 2005 non-[A/F]-line instructions.
 2019-04-27 16:57:47 -04:00