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Commit Graph

4792 Commits

Author SHA1 Message Date
Thomas Harte
7332c64964 Improves testing of function as distinct from timing. 2019-04-29 22:08:37 -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
d6e16d0042 Adds a test of TOS 1.00, as far as it goes without meaningful hardware. 2019-04-29 18:04:57 -04:00
Thomas Harte
8e02d29ae6 Trims test to length of trace capture. 2019-04-29 17:56:49 -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
c0e9c37cc7 Improves memory map model, as far as it goes. 2019-04-29 17:27:44 -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
5b5bfc8445 Applies trace testing to EmuTOS. 2019-04-29 16:55:21 -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
407643c575 Tweaks test length slightly to ensure this doesn't run beyond the final line's end. 2019-04-29 15:40:17 -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
d9278e9827 Attempts to complete the list of things I can't disassemble.
Mysteries to be solved here, definitely. But: 13 missing opcodes remaining.
2019-04-28 23:11:49 -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
Thomas Harte
cf547ef569 Improves semantic communications and temporarily omits A- and F-line instructions.
So it looks like 2773 instructions left to go.
2019-04-27 15:15:03 -04:00
Thomas Harte
e75b386f7d Attempts DIVU and DIVS.
Reportedly leaving 10965 operations now unimplemented.
2019-04-26 22:22:35 -04:00
Thomas Harte
796203859f Implements PEA.
This decreases the unimplemented count by 28 from 11841 to 11813.
2019-04-26 13:49:59 -04:00
Thomas Harte
40f68b70c1 Adds quantification of reports.
Depressingly; 11,841 opcodes are still missing. Better get on with it!
2019-04-26 13:25:34 -04:00
Thomas Harte
40b2fe7339 Merge branch 'master' into 68000 2019-04-26 00:02:35 -04:00
Thomas Harte
a3b6d2d16e Corrects test and resolves all instances of opcodes that are valid but shouldn't be.
The converse case will require implementation of the remaining instructions.
2019-04-25 22:54:58 -04:00
Thomas Harte
3983f8303f Introduces failing test of 68000 opcode coverage. 2019-04-25 22:06:05 -04:00
Thomas Harte
7cbd5e0ef6 Imports additional files used as test cases. 2019-04-25 21:43:47 -04:00
Thomas Harte
dab9bb6575 Implements EXT. 2019-04-25 18:22:19 -04:00
Thomas Harte
7df85ea695 Cleans up and formally introduces a comparative source for QL startup. 2019-04-25 15:42:41 -04:00
Thomas Harte
c132bda01c Implements MOVE from SR. 2019-04-25 14:39:32 -04:00
Thomas Harte
4e25bcfcdc Corrects decoding of AND/OR x, Dn. 2019-04-25 14:19:13 -04:00
Thomas Harte
ea463549c7 Corrects overflow flag for LSL and LSR. 2019-04-25 13:59:10 -04:00
Thomas Harte
723acb31b3 Corrects various flag issues with ADD, SUB and NEG. 2019-04-25 13:53:23 -04:00
Thomas Harte
5725db9234 Corrects calculated-address TAS. 2019-04-25 12:42:05 -04:00
Thomas Harte
8557e563bc Takes a run at TAS, clarifying bus cycles. 2019-04-25 12:19:40 -04:00
Thomas Harte
d2491633ce Ensures MOVEM to M .w correctly updates A7. 2019-04-24 23:21:15 -04:00
Thomas Harte
002796e5f5 Takes a run at BSET and BCHG. 2019-04-24 23:01:32 -04:00
Thomas Harte
fa0accf251 Attempts to correct flags for ASL, ASR, LSL, LSR. 2019-04-24 21:04:47 -04:00