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Author SHA1 Message Date
Thomas Harte
b037c76da6 Add public interface for everything except HALT and BUS REQ/etc. 
... neither of which are used by machines I currently implement.
 2022-05-23 20:55:01 -04:00
Thomas Harte
9cac4ca317 Add MOVE to/from USP. 2022-05-23 20:42:41 -04:00
Thomas Harte
34e5f39571 Ensure that running exactly up to a boundary gives the bus handler the next microcycle to contemplate. 2022-05-23 15:11:33 -04:00
Thomas Harte
e0a279344c Codify the existence of special cases, implement NOP and RESET. 2022-05-23 15:09:46 -04:00
Thomas Harte
e2f4db3e45 Shuffle more of the flow controller methods into their proper place. 2022-05-23 12:06:14 -04:00
Thomas Harte
cdb9eae1ee Merge branch 'master' into 68000Mk2 2022-05-23 11:02:57 -04:00
Thomas Harte
c1837af84a Add notes to self on work remaining. 2022-05-23 11:02:31 -04:00
Thomas Harte
a87f6a28c9 Fix LINK A7. 2022-05-23 10:43:17 -04:00
Thomas Harte
98325325b1 Fix UNLINK A7. 2022-05-23 10:27:44 -04:00
Thomas Harte
26bf66e3f8 Fix shifts and rolls. 2022-05-23 10:09:46 -04:00
Thomas Harte
363cd97154 Resolve double definition of did_shift. 2022-05-23 10:07:24 -04:00
Thomas Harte
5eb19da91f
Merge pull request #1034 from fedex81/patch-1 
Update nbcd_pea.json
 2022-05-23 10:06:01 -04:00
Thomas Harte
c6b3281274 Attempt the shifts and rolls. 2022-05-23 09:29:19 -04:00
Thomas Harte
1e8adc2bd9 Fix MOVEP to R. 2022-05-23 09:00:37 -04:00
Thomas Harte
c73021cf3c Implement MOVE. 2022-05-23 08:46:06 -04:00
Thomas Harte
1b3acf9cd8 Eliminate assumption. 2022-05-23 08:18:37 -04:00
Federico Berti
1a26d4e409
Update nbcd_pea.json 
Add missing bracket
 2022-05-23 12:14:00 +01:00
Thomas Harte
c8ede400eb Fix RTE. 2022-05-22 21:17:28 -04:00
Thomas Harte
269263eecf Implement RTE, RTS, RTR. 2022-05-22 21:16:38 -04:00
Thomas Harte
4e21cdfc63 Enable NEGX/CLR tests. 2022-05-22 20:55:21 -04:00
Thomas Harte
faef5633f8 Ensure MOVE from SR has an effective address to write to. 2022-05-22 20:52:00 -04:00
Thomas Harte
7d1f1a3175 Implement MOVE [to/from] [CCR/SR]. 2022-05-22 19:45:22 -04:00
Thomas Harte
4e34727195 Fully implement TAS. 2022-05-22 16:14:03 -04:00
Thomas Harte
1dd6ed6ae3 Implement TAS Dn, with detour for other TASes. 2022-05-22 16:08:30 -04:00
Thomas Harte
cb4d6710df Switch to a more direct indication of progress. 2022-05-22 11:27:58 -04:00
Thomas Harte
3b68b9a83b Implement PEA. 2022-05-22 11:27:38 -04:00
Thomas Harte
4279ce87ea Implement LEA. 2022-05-22 08:29:12 -04:00
Thomas Harte
3c1c4f89e9 Add MULU/S functionality, though not timing. 2022-05-22 08:02:32 -04:00
Thomas Harte
4a6512f5d5 Reduce dispatch boilerplate. 2022-05-22 07:39:16 -04:00
Thomas Harte
284f23c6ea Implement JMP. 2022-05-22 07:16:38 -04:00
Thomas Harte
11a9a5c126 Use common macros for the two forms of Perform. 2022-05-22 07:08:14 -04:00
Thomas Harte
4993801741 Add missing prefetch to BSET, BCHG, BCLR. 2022-05-21 21:05:05 -04:00
Thomas Harte
4b35899a12 Bcc: properly establish offset. 2022-05-21 20:59:34 -04:00
Thomas Harte
1304e930eb DBcc is two-operand. 2022-05-21 20:06:03 -04:00
Thomas Harte
94288d5a94 Excludes DBcc from standard operand fetch. 2022-05-21 19:53:28 -04:00
Thomas Harte
3811ab1b82 Fix the two 8bit-with-displacement effective address Calc steps. 2022-05-21 16:20:01 -04:00
Thomas Harte
c869eb1eec Correct omission: wasn't testing the final PC. 
Plenty of new errors incoming.
 2022-05-21 15:56:27 -04:00
Thomas Harte
f97d2a0eb9 Add DIVU/DIVS, at least as far as getting the correct numeric result. 2022-05-21 15:56:09 -04:00
Thomas Harte
176c8355cb The tests in chk.json now pass. 2022-05-21 14:32:58 -04:00
Thomas Harte
2258434326 Ensure proper return addresses are calculated for JSR. 2022-05-21 14:28:44 -04:00
Thomas Harte
e46a3c4046 Implement JSR. 2022-05-21 10:29:36 -04:00
Thomas Harte
0e4cfde657 Fix MOVEM predec. 2022-05-21 08:17:39 -04:00
Thomas Harte
4bd9c36922 Fix postincrement mode. 2022-05-20 21:01:23 -04:00
Thomas Harte
256da43fe5 Fix MOVEM other than postinc and predec. 2022-05-20 20:47:54 -04:00
Thomas Harte
6a442e0136 MOVEM has an immediate first operand. 2022-05-20 20:34:51 -04:00
Thomas Harte
a818650027 Add a faulty attempt at MOVEM. 2022-05-20 18:48:19 -04:00
Thomas Harte
9d79e64f5c Add a mere calculate effective address pathway. 
Plus a lot of waffle to try to justify the further code duplication.
 2022-05-20 16:23:52 -04:00
Thomas Harte
c7c12f9638 After a quick check, eori_andi_ori also now passes. 2022-05-20 14:47:11 -04:00
Thomas Harte
ee942c5c17 Fix PC-relative fetches. 2022-05-20 14:42:51 -04:00
Thomas Harte
d157819c49 Implement the various to-[SR/CCR] actions, which do a 'repeat' prefetch. 
(which isn't exactly a repeat, at least in the SR cases, because the function code might have changed)
 2022-05-20 14:29:14 -04:00