Thomas Harte
2ca1eb4cf8
Move set_pc
into the operation-specific group.
2022-05-09 16:20:15 -04:00
Thomas Harte
0af8660181
Remove add_pc
and decline_branch
in favour of operation-specific signals.
2022-05-09 16:19:25 -04:00
Thomas Harte
2f7cff84d9
Enable missing rotates and shifts.
2022-05-09 11:26:01 -04:00
Thomas Harte
8e5650fde9
Clean up Instruction.hpp.
2022-05-09 10:13:42 -04:00
Thomas Harte
539932dc56
Provide function codes. TODO: optionally.
2022-05-09 09:18:02 -04:00
Thomas Harte
e35de357fa
Route reads and writes through a common path.
2022-05-08 17:17:46 -04:00
Thomas Harte
0818fd7828
Ensure no status updates fall through the cracks.
2022-05-07 21:29:12 -04:00
Thomas Harte
98cb9cc1eb
Fix CHK operand size.
2022-05-07 21:16:44 -04:00
Thomas Harte
bf8c97abbb
Permit TRAP, TRAPV and CHK to push the next PC rather than the current.
2022-05-07 20:32:39 -04:00
Thomas Harte
ad6cf5e401
Pull out magic constant, simplify sp
and TAS
.
2022-05-07 20:20:24 -04:00
Thomas Harte
2b3900fd14
Fix LINK A7.
2022-05-07 08:15:26 -04:00
Thomas Harte
1defeca1ad
Implement RTS, RTR, RTE.
2022-05-06 12:30:49 -04:00
Thomas Harte
ac6a9ab631
Fix TAS Dn.
2022-05-06 12:23:04 -04:00
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 Sequence
s.
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
5e355383df
Correct SIB test.
2022-04-27 19:53:15 -04:00
Thomas Harte
9cbbb6e508
Adjust path to match namespace; add to Qt project.
2022-04-27 08:05:36 -04:00
Thomas Harte
8902bb1af0
Include size and supervisor flag in Preinstruction.
2022-04-26 19:44:02 -04:00
Thomas Harte
baf1bd354d
Avoid packing/unpacking of operands.
2022-04-26 19:37:07 -04:00
Thomas Harte
539c2985aa
Fill in size table, define quick
to return a uint32_t
.
2022-04-26 12:30:14 -04:00
Thomas Harte
5c356e15b5
Completes requires_supervisor
.
2022-04-25 20:05:45 -04:00
Thomas Harte
8ff0b71b29
Subsume MOVEQ into MOVE.l; add missing invalid_operands.
2022-04-25 19:58:19 -04:00
Thomas Harte
8f8f201186
Complete transition to simple AND-based verification.
2022-04-25 16:23:16 -04:00
Thomas Harte
0c688757b0
Adapt the last of the MOVEs, TAS, NOT, SUB and TST.
2022-04-25 16:05:44 -04:00
Thomas Harte
5778e92e70
Adapt MOVE, DIV, MUL, OR.
2022-04-25 15:43:25 -04:00
Thomas Harte
3268ea42ff
Translate SUB, PEA.
2022-04-25 12:41:41 -04:00
Thomas Harte
1538500903
Add enough to make AND masks the default case.
2022-04-25 12:30:44 -04:00
Thomas Harte
6ca30a16ca
Update JMP, JSR.
2022-04-25 12:05:07 -04:00
Thomas Harte
e6dc2e0d31
Add EXG, EXT.
2022-04-25 11:49:14 -04:00
Thomas Harte
9bbd1390c1
Add new-style validation of EORI to CCR, move EXG decoding into page navigation.
2022-04-25 11:43:30 -04:00
Thomas Harte
27f8db6e8b
Update DBcc, DIVU/DIVS, EOR.
2022-04-25 09:49:18 -04:00
Thomas Harte
dda0c0e097
Update CMPM, CMPI.
2022-04-25 09:39:22 -04:00
Thomas Harte
f5ea5c26a3
Translate CHK, CLR, CMP, CMPA.
2022-04-24 21:05:00 -04:00
Thomas Harte
d01fa96177
Port BSR, BTST.
2022-04-24 20:49:41 -04:00
Thomas Harte
03caa53863
Translate BSET.
2022-04-24 19:58:10 -04:00
Thomas Harte
4f4a2e6d92
Translate ASL, ASR, Bcc, BCHG, BCLR.
2022-04-24 19:53:54 -04:00
Thomas Harte
87178ed725
Port AND.
2022-04-24 15:12:18 -04:00
Thomas Harte
94e5436f6e
Attempt a more compact retelling.
2022-04-24 14:47:14 -04:00
Thomas Harte
b965f2053a
Start experimenting with a simple AND for operand validation.
2022-04-24 10:43:06 -04:00
Thomas Harte
edee078f0a
Eliminate last set of failures.
2022-04-22 20:57:45 -04:00
Thomas Harte
d4b766bf3f
Introduce directional ADD/SUB/AND/OR.
...
Just 512 failures to go.
2022-04-22 20:37:09 -04:00
Thomas Harte
72772c9a83
Remove branch from combined_mode
.
...
On x86 it was probably only a conditional move, but this is fine.
2022-04-22 15:11:41 -04:00
Thomas Harte
4c806d7c51
Tidy up slightly, ahead of a final push to getting complete test success.
...
After which I can start undoing style errors.
2022-04-22 14:51:25 -04:00
Thomas Harte
96afcb7a43
Introduce remainder of tests.
2022-04-22 14:33:43 -04:00
Thomas Harte
efeee5160e
Add tests for RTE, RTR, TRAP, TRAPV, CHK.
2022-04-22 10:06:39 -04:00
Thomas Harte
06fb502047
Add MUL/DIV tests and exclusions.
2022-04-22 09:47:16 -04:00
Thomas Harte
977192f480
Resolve D-page decoding errors.
...
In particular: that I'd overlooked CMPM, and was treating NOT as two-operand.
2022-04-22 09:24:16 -04:00
Thomas Harte
cf66d9d38d
Add failing tests for EOR, NOT, OR; disambiguate EOR vs CMP.
2022-04-21 20:36:04 -04:00
Thomas Harte
25eeff8fc5
Correct CMP decoding, correct AND as far as asymmetry of Dn, Dn.
2022-04-21 20:14:52 -04:00
Thomas Harte
bf9fc0ae96
Correct decoding of BSR.
2022-04-21 16:24:34 -04:00
Thomas Harte
a8a1a74b79
Correct BSRb quick value.
2022-04-21 16:13:06 -04:00
Thomas Harte
549e440f7c
Add 'quick' decoding and testing.
2022-04-21 16:05:00 -04:00
Thomas Harte
45c02c31f8
Add MOVEM exclusions.
2022-04-21 15:47:34 -04:00
Thomas Harte
b6b092d124
Add tests, exclusions for rest of shift/roll group.
2022-04-21 11:26:56 -04:00
Thomas Harte
3af93ada6f
Test and correct Bcc, BSR, CLR, NEGX, NEG.
2022-04-20 20:19:56 -04:00
Thomas Harte
dc16928f74
Add appropriate exclusions for JSR, JMP, Scc.
2022-04-20 16:56:26 -04:00
Thomas Harte
80ff146620
Add CMP, CMPA and TST tests and exclusions.
2022-04-20 16:29:45 -04:00
Thomas Harte
d4fe9d8166
Complete BTST/etc exclusions.
2022-04-20 16:16:24 -04:00
Thomas Harte
85a0af03c1
Import more standard JSON; start validating.
2022-04-20 09:17:00 -04:00
Thomas Harte
dc43f5605b
Give MOVEPs precedence.
2022-04-20 08:40:56 -04:00
Thomas Harte
fab064641f
Add Move[to/from][SR/CCR/USP] tests, correct decodings.
2022-04-20 07:59:13 -04:00
Thomas Harte
316e9681cc
Weed out false PEAs.
2022-04-19 20:34:08 -04:00
Thomas Harte
4181313cc6
Correct decoding of SWAP.
2022-04-19 20:28:00 -04:00
Thomas Harte
6aabc5e7b0
Test LEA, PEA, add name for MOVEq.
2022-04-19 19:45:51 -04:00
Thomas Harte
343a8e0192
Resolve wrong-headed mapping of LEA to MOVEAl.
2022-04-19 19:36:21 -04:00
Thomas Harte
ef87d09cfa
Clear up MOVEs, fail on MOVEAs.
2022-04-19 17:13:23 -04:00
Thomas Harte
d21c67f237
Don't permit byte move from address register.
2022-04-19 16:49:26 -04:00
Thomas Harte
de40fed248
Test MOVEs and add operand validation.
2022-04-19 16:31:03 -04:00
Thomas Harte
76d7e0e1f8
Test and correct SUBs.
2022-04-19 16:27:20 -04:00
Thomas Harte
1f585d67b6
ADDA: correct decoding, add validation.
2022-04-19 14:43:01 -04:00
Thomas Harte
5b22e94a4b
Map invalid reg+mode combinations to AddressingMode::None; add validation of ADDs and decoding of ADDX.
2022-04-19 14:36:36 -04:00
Thomas Harte
7749aef6b6
Improve const correctness.
2022-04-19 14:35:40 -04:00
Thomas Harte
5de8fb0d08
Disallow four illegal NBCD addressing modes.
2022-04-19 09:59:02 -04:00
Thomas Harte
19f7335926
Add post validation step.
2022-04-19 09:44:02 -04:00
Thomas Harte
99f4cd867d
Decode the two EXTs.
2022-04-19 08:42:17 -04:00
Thomas Harte
93fe3459fd
The quick value won't always fit in reg; turf the problem elsewhere.
2022-04-19 08:37:35 -04:00
Thomas Harte
1abd3bd7f3
Decode SWAP.
2022-04-19 08:37:13 -04:00
Thomas Harte
fc4fd41be4
Reorder from most specific to least.
2022-04-19 08:00:52 -04:00
Thomas Harte
e4c6251ef5
Express the BSR/Bcc.l test properly.
2022-04-18 14:42:31 -04:00
Thomas Harte
7aa250eaf7
Advances to hitting the same absent/present mapping as the old decoder.
2022-04-18 14:41:26 -04:00
Thomas Harte
ff380b686a
Decode MOVEq.
2022-04-18 09:12:45 -04:00
Thomas Harte
d2452f4b68
Fix SUBQ ExtendedOperation mappings.
2022-04-18 09:08:49 -04:00
Thomas Harte
deb9c32a38
Add missing Sccs.
2022-04-18 09:04:17 -04:00
Thomas Harte
440f45b996
Attempt decoding and disambiguation of Scc, DBcc, Bcc and BSR.
2022-04-18 08:55:46 -04:00
Thomas Harte
7d64c4ec66
Add STOP.
2022-04-18 08:29:10 -04:00
Thomas Harte
7fe0d530c1
Add a decoder for TRAP.
2022-04-18 08:05:33 -04:00
Thomas Harte
c944767554
Better document decoding patterns, add LEA and CHK.
2022-04-18 08:00:43 -04:00
Thomas Harte
fde5a1c507
Ensure ADDI, SUBI, etc, provide an operation.
2022-04-18 07:42:30 -04:00
Thomas Harte
1991ed0804
Introduce failing [partial-]test of new 68000 decoder.
2022-04-18 07:23:25 -04:00
Thomas Harte
4eb752b000
Even out tabs.
2022-04-15 20:41:39 -04:00
Thomas Harte
bfb29a58f3
Take another crack at neatness; make LEA overt.
2022-04-15 20:33:59 -04:00
Thomas Harte
f86e455a87
Advance permissively through the 4xxx page to LEA.
2022-04-15 16:01:33 -04:00
Thomas Harte
faa35fe9fc
Decode MOVE and the fixed 0x4xxx set.
2022-04-15 15:40:31 -04:00
Thomas Harte
89b8b59658
Ostensibly completes the 0 line.
2022-04-15 15:33:54 -04:00
Thomas Harte
de55a1adc4
Require a model for decoding; shift a bunch of immediates into ExtendedOperation.
2022-04-15 09:40:37 -04:00
Thomas Harte
d1613025ee
For now, assume the .q actions can be handled inside Preinstruction.
2022-04-13 09:29:12 -04:00
Thomas Harte
cc4431c409
Expand decode to accept a wider array of operations, and then funnel them down.
2022-04-12 16:17:30 -04:00
Thomas Harte
3d5986c55d
Some minor style changes, plus I think I've talked myself into an expanded Operation-tracking enum. Probably.
2022-04-12 14:54:11 -04:00
Thomas Harte
9aeb6ee532
Formally prepare for one- and two-operand instructions.
2022-04-12 09:14:46 -04:00
Thomas Harte
e7f6cc598d
Make first attempt to complete broad phase of decoding.
2022-04-12 09:08:46 -04:00
Thomas Harte
cd465dd121
Decode page E.
2022-04-12 09:04:40 -04:00
Thomas Harte
174b48a14a
Populate lines 9 and D.
2022-04-12 08:57:40 -04:00
Thomas Harte
bca18e7aba
Fill in line decoders for 5, 6 and 7.
...
This leaves 9, D and E to go.
2022-04-12 08:44:32 -04:00
Thomas Harte
17e761d6c6
Add enough code to pages 0–3 to shift problem to decode().
2022-04-12 08:36:44 -04:00
Thomas Harte
c50556dde4
Create empty line decoders.
2022-04-12 08:16:29 -04:00
Thomas Harte
dd5bdd67d7
Add B page and a large chunk of 4.
2022-04-12 07:49:08 -04:00
Thomas Harte
21ac9363e9
Add page 8.
2022-04-11 16:32:57 -04:00
Thomas Harte
8e3cccf4d6
Begins a formalised 68k decoder.
2022-04-11 15:00:55 -04:00
Thomas Harte
bb5cf570e5
Remove conditional, make generic enough for both 32- and 64-bit operation.
2022-04-10 15:18:23 -04:00
Thomas Harte
7002d6d306
Improve accuracy of comment.
2022-04-10 09:37:18 -04:00
Thomas Harte
1b8d8f3a04
Default to 32-bit versions.
2022-04-10 09:35:58 -04:00
Thomas Harte
284440336d
Correct rotate_mask().
2022-04-10 09:31:39 -04:00
Thomas Harte
140ae7a513
Clarify template parameters.
2022-04-10 08:57:09 -04:00
Thomas Harte
7de50b5e2e
Provide 64-bit me, mb and sh. Add direct getter for rotate masks.
2022-04-09 21:08:01 -04:00
Thomas Harte
4652a84b43
Add exposition.
2022-04-09 19:20:13 -04:00
Thomas Harte
9e0755bc86
Introduce overlooked: ld, ldu, rldclx, rldcrx, rldicx, rldiclx, rldicrx, rldimix.
2022-04-09 18:28:51 -04:00
Thomas Harte
da0f7d7907
Rearrange into alphabetical order.
2022-04-09 10:20:03 -04:00
Thomas Harte
88d72bf31d
Fill in more mnemonics.
2022-04-08 10:01:52 -04:00
Thomas Harte
aac2f7dd73
Add missing validations.
2022-04-08 09:47:04 -04:00
Thomas Harte
1f44ad1723
Completes test cases.
2022-04-06 21:09:58 -04:00
Thomas Harte
4ab1857a11
Complete MPC601 commentary.
2022-04-06 20:53:44 -04:00
Thomas Harte
d23c714ec7
Build in an optional post hoc validation.
...
TODO: validate.
2022-04-05 11:23:54 -04:00
Thomas Harte
59a1fde2a1
Fix is_zero_mask.
2022-04-03 20:37:09 -04:00
Thomas Harte
31276de5c3
Complete 'misc instructions' tests.
2022-04-03 20:33:32 -04:00
Thomas Harte
c581aef11d
Test as far as mffs.
2022-04-03 18:29:40 -04:00
Thomas Harte
7f6a955a71
Complete the cmp set.
2022-04-03 15:50:03 -04:00
Thomas Harte
125d97cc41
Complete floating point tests.
2022-04-03 08:55:28 -04:00
Thomas Harte
de7d9ba471
Add further floating point tests.
2022-04-03 08:06:59 -04:00
Thomas Harte
ad54b44235
Begin documentation and testing of the floating point instructions.
2022-04-02 19:58:21 -04:00
Thomas Harte
42532ec0f5
Test floating point loads and stores.
2022-04-02 15:40:17 -04:00
Thomas Harte
b84fa619da
Test integer loads and stores.
2022-04-02 15:27:12 -04:00
Thomas Harte
8a1409184f
Add decoding of lwa.
2022-04-02 10:31:55 -04:00
Thomas Harte
8a3c16a5bc
Add lwa.
2022-04-02 10:26:47 -04:00
Thomas Harte
6343c65ce2
Document further; mftb is optional.
2022-04-02 10:09:58 -04:00
Thomas Harte
d5967f7834
Correct decoding of stwcx. and stdcx.
2022-04-01 20:37:36 -04:00
Thomas Harte
d5f7650ac1
Test synchronising loads and stores, further expand documentation.
2022-04-01 18:30:48 -04:00
Thomas Harte
8f580c256c
Remove explanations; saying nothing is better than giving incomplete advice.
2022-04-01 17:49:34 -04:00
Thomas Harte
7c8f044380
Complete shift tests.
2022-04-01 17:22:32 -04:00
Thomas Harte
8efd506471
Transcribe up to the end of 'e', use extswx
and remove extsw
.
2022-04-01 17:11:57 -04:00
Thomas Harte
e83267751e
Start shuffling parameters into conventional order; expand on cmp–cmpli, dcbf–dcbz.
2022-03-30 20:36:46 -04:00
Thomas Harte
84f0b0a84c
Test rotates.
2022-03-30 16:43:09 -04:00
Thomas Harte
52e7226655
Merge branch 'PowerPCTests' of github.com:TomHarte/CLK into PowerPCTests
2022-03-29 20:50:40 -04:00
Thomas Harte
b89c8decd4
Test addx–divwx and mtcrf; document fields for crand, etc.
2022-03-29 20:48:43 -04:00
Thomas Harte
d783975597
Start offering a list of relevant fields per Operation.
2022-03-29 19:59:21 -04:00
Thomas Harte
5ec291df5c
Merge branch 'PowerPCTests' of github.com:TomHarte/CLK into PowerPCTests
2022-03-29 14:38:28 -04:00
Thomas Harte
0a45355055
Add a few more field comments.
2022-03-29 14:37:21 -04:00
Thomas Harte
99ad40f3e0
Test subfcx, subfx; correct decoding of oe().
2022-03-28 20:39:52 -04:00
Thomas Harte
b9c8016aca
Merge branch 'PowerPCTests' of github.com:TomHarte/CLK into PowerPCTests
2022-03-28 20:20:59 -04:00
Thomas Harte
8ad1f2d4f5
Add bad attempt to catch subfc.
2022-03-28 20:18:41 -04:00
Thomas Harte
dc30581be0
Fix typo; . -> ,
2022-03-28 16:39:55 -04:00
Thomas Harte
2e56b606fa
Improve file division, document some further operations.
2022-03-27 18:44:56 -04:00
Thomas Harte
d84c72afe5
Test loads and stores, and immediate arithmetic.
2022-03-27 08:47:01 -04:00
Thomas Harte
4f6a9917c6
Test lbzx, lbzux.
2022-03-26 08:45:07 -04:00
Thomas Harte
3d48183753
Test lwzux.
2022-03-25 20:31:47 -04:00
Thomas Harte
33c31eb798
Test lwzx.
2022-03-25 20:23:21 -04:00
Thomas Harte
73ae7ad82f
Resolve final branch test: aa() applies.
2022-03-25 20:10:08 -04:00
Thomas Harte
1a5d3bb69c
Match majority of branch tests.
2022-03-25 08:41:57 -04:00
Thomas Harte
7d4fe55d63
Handle bclrx set and clear.
2022-03-25 06:25:06 -04:00
Thomas Harte
089e03afe8
Navigates bcctrx tests, adding simplified bo() helpers and bi() helpers.
2022-03-24 20:44:03 -04:00
Thomas Harte
8e019f01ab
Document dozx and dozi.
2022-03-21 10:49:01 -04:00
Thomas Harte
77bdaf3c78
These are likely to be useful outside of the decoder.
2022-03-21 10:41:17 -04:00
Thomas Harte
0b6828c895
Decision: these enums will be at namespace scope.
2022-03-21 10:19:30 -04:00
Thomas Harte
d4704c656f
Merge branch 'PowerPCTests' of github.com:TomHarte/CLK into PowerPCTests
2022-03-21 10:18:36 -04:00
Thomas Harte
c01192c784
Add exposition for absx to divsx.
2022-03-21 10:17:55 -04:00
Thomas Harte
8adb611edf
Attempt to clarify with an enum.
2022-03-19 12:27:28 -04:00
Thomas Harte
e5af5b57ad
Add documentation for bx, bcx, bcctrx.
...
Catch bcx tests.
2022-03-18 19:55:26 -04:00
Thomas Harte
1725894fe9
Eliminate redundant CMPSD, CDQ, CWDE.
...
Also removes IBTS for now, as I'm unclear where it should sit in the opcode map.
2022-03-12 12:24:44 -05:00
Thomas Harte
fd4f85eb19
Add SMSW.
2022-03-12 12:23:48 -05:00
Thomas Harte
f1c4864016
Eliminate INSD.
2022-03-12 11:37:21 -05:00
Thomas Harte
e6bd265729
Explain which BOUNDs operand is which.
2022-03-11 20:34:28 -05:00
Thomas Harte
c22e8112e7
Expand exposition.
2022-03-11 20:30:56 -05:00
Thomas Harte
44252984c2
Eliminate INT3 special case.
2022-03-11 14:03:46 -05:00
Thomas Harte
4b4f92780e
Shuffle extension word order.
...
The primary objective here is simplifying index calculation, but as per the note it does also potentially open up options with regard to packing in the future.
2022-03-11 13:24:45 -05:00
Thomas Harte
f694620087
Resolve TODO.
2022-03-11 13:10:44 -05:00
Thomas Harte
9b4048ec6e
The address size modifier doesn't seem to affect far address sizes.
...
It's meant to affect only instructions with operands that reside in memory, I think. So probably only ::DirectAddress in my nomenclature. More research to do.
2022-03-11 12:46:07 -05:00
Thomas Harte
c744a97e3c
Ensure no extensions for default constructed Instruction.
2022-03-11 11:55:26 -05:00
Thomas Harte
91d75d7704
Switch strategy on 8086 instruction lengths.
2022-03-11 09:48:26 -05:00
Thomas Harte
dc8cff364f
Switch to common test.
2022-03-11 09:48:02 -05:00
Thomas Harte
572dc40e6b
Allow assignments.
2022-03-11 09:47:23 -05:00
Thomas Harte
f92ffddb82
Add instruction length limits.
2022-03-10 20:47:56 -05:00
Thomas Harte
641e0c1afc
Resolve default segment question.
2022-03-10 20:27:35 -05:00
Thomas Harte
bf7faa80c1
Add TODO.
2022-03-10 16:47:54 -05:00
Thomas Harte
a2ae3771eb
Add test for switch to Source::IndirectNoBase.
2022-03-10 15:45:56 -05:00
Thomas Harte
673ffc50da
Switch to intended compact version of Instruction
.
2022-03-10 15:14:50 -05:00
Thomas Harte
6dc9973754
Incorporate length into Instruction
.
2022-03-10 07:12:12 -05:00
Thomas Harte
cf6a910630
Handle no-base case directly in existing switch.
2022-03-09 20:20:32 -05:00
Thomas Harte
520baa6ec8
Formalise IndirectNoBase
and permit a knowledgable caller to avoid conditionals.
2022-03-09 20:19:40 -05:00
Thomas Harte
bbf925a27e
Clarify, unify and correct decoding and encoding of [CALL/RET/JMP][near/far/relative/absolute].
2022-03-09 16:48:06 -05:00
Thomas Harte
381fd5dbe4
E8 is a relative call.
2022-03-09 16:37:07 -05:00
Thomas Harte
ead8b7437e
Remove done TODO.
2022-03-09 15:26:20 -05:00
Thomas Harte
acd9df6745
Fix segment/offset sizes for far calls.
2022-03-09 15:23:43 -05:00
Thomas Harte
f96c051932
Record PUSH immediate operation size.
2022-03-09 14:24:57 -05:00
Thomas Harte
67b2e40fae
Fixed: INs and OUTs remain single byte.
2022-03-09 10:51:16 -05:00
Thomas Harte
081a2acd61
Fix shift group operand size.
2022-03-09 09:33:25 -05:00
Thomas Harte
de79acc790
Fix RegAddr/AddrRegs and group 2 decoding.
2022-03-09 08:38:34 -05:00
Thomas Harte
21d4838322
Fix current implementation of data_segment
.
...
As far as it goes.
2022-03-08 17:08:21 -05:00
Thomas Harte
926a373591
Extend SIB test, correct decoder.
2022-03-08 15:03:37 -05:00
Thomas Harte
a954f23642
Attempt 32-bit modregrm + SIB parsing.
2022-03-08 14:39:49 -05:00
Thomas Harte
41a104cc10
Adds special test/control/debug MOVs.
...
This'll do; it's not ideal but avoids bloating up the `Source` enum.
2022-03-07 17:04:05 -05:00
Thomas Harte
f0b4971c7b
Correct SHLD format.
2022-03-07 16:39:02 -05:00
Thomas Harte
8e669a32a3
Take a stab at group 8.
2022-03-07 16:34:56 -05:00
Thomas Harte
0e16e7935e
Correct double reference to Group 6.
2022-03-07 16:26:17 -05:00
Thomas Harte
7ea84d9a4e
Add MOVZX, MOVSX.
2022-03-07 16:25:44 -05:00
Thomas Harte
7313c89dec
Add BT, BTS, BTR, BTC, BSF, BSR.
2022-03-07 16:23:25 -05:00
Thomas Harte
35a66c03c2
Add the SETs.
2022-03-07 10:32:34 -05:00
Thomas Harte
bbb3168bae
Adds the missing shift group segues at c0 and c1.
2022-03-07 09:18:59 -05:00
Thomas Harte
1ea9d3faf8
Introduce additional forms of IMUL.
2022-03-07 09:05:22 -05:00
Thomas Harte
4479be4fd0
Add the two immediate PUSHes.
2022-03-06 14:28:41 -05:00
Thomas Harte
91a6bf671d
Also 'easy': LSS, LFS, LGS.
...
Though perhaps I'm off on LES and LDS?
2022-03-06 09:28:43 -05:00
Thomas Harte
49b5889d9e
0x8c is available on the 8086.
2022-03-06 09:24:59 -05:00
Thomas Harte
ede61ae130
Flag up TODOs, for easier in-editor navigation.
2022-03-05 17:48:01 -05:00
Thomas Harte
7a79111767
Add the easiest 80386 extensions: PUSH/POP FS/GS and longer conditional jumps.
2022-03-05 17:32:21 -05:00
Thomas Harte
6432521b9d
Correct two references to JP that should be JL.
2022-03-05 17:16:32 -05:00
Thomas Harte
65f578fe61
Add notes on all missing opcodes.
2022-03-05 17:16:13 -05:00
Thomas Harte
3a8eb4a4f0
Add 80386 segment overrides.
2022-03-05 17:03:46 -05:00
Thomas Harte
eb180656bb
Fix $8e data size, add $8c.
2022-03-05 17:00:48 -05:00
Thomas Harte
1afcbba218
Clarify sign extension availability.
2022-03-05 16:44:26 -05:00
Thomas Harte
8a0902a83b
Adapts existing opcodes for 32-bit parsing.
2022-03-05 13:52:07 -05:00
Thomas Harte
dfb312fee6
Make column and row meanings overt.
2022-03-05 11:56:08 -05:00
Thomas Harte
11bb594fa2
Sets up [ignored] memory and data size prefixes.
2022-03-02 20:23:35 -05:00
Thomas Harte
8e3ae2c78f
Add opcode map as documentation.
2022-03-02 20:00:21 -05:00
Thomas Harte
4b4135e35a
Correct #undef.
2022-03-01 18:23:24 -05:00
Thomas Harte
d1148c4cab
Switch to constexpr function, for guaranteed semantics.
2022-03-01 17:30:41 -05:00
Thomas Harte
8ee62b4789
Simplify address size semantics.
...
Since it'll no longer be a mode-dependant toggle, but a fully-retained value.
2022-03-01 17:29:26 -05:00
Thomas Harte
5e7a142ff1
Fix is_write
errors, update comment, add additional source for asserts.
2022-03-01 16:51:54 -05:00
Thomas Harte
2c816db45e
Refactor: (i) to expose effective address calculation; and (ii) to include address size in Instruction.
2022-03-01 09:36:37 -05:00
Thomas Harte
b920507f34
Double down on AddressT
, add an assert
on memory_mask
.
2022-02-28 10:03:58 -05:00
Thomas Harte
afbc57cc0c
Incorporate displacement, switch macro flag.
2022-02-28 09:53:23 -05:00
Thomas Harte
9f12c009d6
Correct data size when accessing address registers.
2022-02-27 19:45:03 -05:00
Thomas Harte
84ac68a58b
Fix indirect memory read/write
2022-02-27 18:43:00 -05:00
Thomas Harte
27d1df4699
Introduce enough of a DataPointerResolver test to build but fail.
2022-02-27 18:27:58 -05:00
Thomas Harte
0d7a7dc7c9
Introduce DataPointerResolver
, to codify the meaning of DataPointer
and validate that enough information is present.
2022-02-27 11:25:02 -05:00
Thomas Harte
b8bff0e7f5
Double up eSP, eBP, eSI, eDI and AH, CH, DH, BH enums, as per Intel's encoding.
2022-02-24 05:16:15 -05:00
Thomas Harte
60bf1ef7ea
Rename SourceSIB to DataPointer, extend to allow for an absent base.
2022-02-23 08:28:20 -05:00
Thomas Harte
95976d8b58
Add missing #include.
2022-02-21 16:33:58 -05:00
Thomas Harte
ecb20cc29b
Improve tabbing.
2022-02-21 16:09:03 -05:00
Thomas Harte
b6183e86eb
Clarifies model tests by macro; adds the address size toggle.
2022-02-21 16:06:02 -05:00
Thomas Harte
229af0380c
This is normatively called the address size.
2022-02-21 15:52:16 -05:00
Thomas Harte
b968a662d3
Dump notes on intended Instruction layout, add memory size flag.
2022-02-21 15:48:58 -05:00
Thomas Harte
159e869fe6
Justifies the templatisation.
2022-02-21 15:33:08 -05:00
Thomas Harte
76814588b8
Template Instruction
on its content size.
2022-02-21 12:36:03 -05:00
Thomas Harte
1934c7faa2
Switch Decoder
into a template.
2022-02-21 12:21:57 -05:00
Thomas Harte
9e9e160c43
Eliminate Ind[BXPlusSI/etc] in favour of specifying everything via a ScaleIndexBase.
2022-02-21 11:45:46 -05:00
Thomas Harte
546b4edbf1
Ensure ScaleIndexBase
can be used constexpr
; add note-to-self on indexing table.
2022-02-20 19:22:28 -05:00
Thomas Harte
63d8a88e2f
Switch to holding the SIB as a typed ScaleIndexBase.
...
(and permit copy assignment)
2022-02-20 17:54:53 -05:00
Thomas Harte
75d2d64e7c
Albeit that it requires nuanced shift/roll semantics, eliminates CL
constant.
...
Shifts and rolls are already slightly semantically special for being undefined for values greater than 8/16/32 — i.e. in some implementations they don't even use the entirety of CL, just the low five bits. Which makes me feel a little better.
The upside of no ambiguity between eCX size 1 and CL justifies the trade.
2022-02-20 17:52:19 -05:00
Thomas Harte
a5113998e2
Accept that IN and OUT are going to have special semantics, thereby kill ::AX and ::DX.
2022-02-20 17:15:01 -05:00
Thomas Harte
4d2e8cd71d
Adds a presently-unreachable step for SIB consumption.
2022-02-19 18:00:27 -05:00
Thomas Harte
30b355fd6f
Chips away further at the legacy register names.
2022-02-18 18:37:47 -05:00
Thomas Harte
12df7112da
Starts adjusting the concept of a Source
.
2022-02-17 11:32:09 -05:00
Thomas Harte
cd5ca3f65b
Attempts a full decoding of the 80286 instruction set.
2022-02-10 17:13:50 -05:00
Thomas Harte
0bd63cf00f
Introduces the easy F page instructions.
2022-02-10 09:35:05 -05:00
Thomas Harte
7ceb3369eb
Attempts decoding of the 80186 set.
2022-02-09 17:51:48 -05:00
Thomas Harte
ae21726287
Splits 80186 additions from 80286; fills in a touch more.
2022-02-01 20:38:10 -05:00
Thomas Harte
a4da1b6eb0
Begins enumerating the 80286 and 80386 instructions.
2022-01-31 09:11:06 -05:00
Thomas Harte
85bfd2eba3
Remove further errant 'Awaiting's.
2022-01-31 08:22:07 -05:00
Thomas Harte
2d543590dc
Make a noun, for better consistency.
2022-01-31 08:14:33 -05:00
Thomas Harte
2574407afb
Relocates MinIntTypeValue
to Numeric.
2021-06-22 19:33:02 -04:00
Thomas Harte
135134acfd
Adds a shell for video emulation.
2021-03-18 12:47:48 -04:00
Cacodemon345
82717b39bb
Fix compilation on GCC 10
2021-03-13 01:27:29 +06:00
Thomas Harte
cbf5a79ee8
Takes a swing at improper key repeat.
2021-02-28 16:46:09 -05:00
Thomas Harte
5d1970d201
Adds a hacky different guess at how register access might work.
2021-02-19 21:46:18 -05:00
Thomas Harte
2e9065b34c
Increases number of fixed initial values.
2021-02-18 22:48:53 -05:00
Thomas Harte
2a45e7a8d4
Slows timer X, to what may or may not be correct.
2021-02-15 16:40:27 -05:00
Thomas Harte
f8f0ff0fae
Add timer X counting.
...
Still no interrupts.
2021-02-15 16:29:25 -05:00
Thomas Harte
f5dcff2f29
Honours interrupt vector.
2021-02-15 15:05:56 -05:00
Thomas Harte
eccf5ca043
Makes first effort to wire up the ADB vertical blank input.
...
However: looking at the disassembly, I'm not sure it really is wired to INTR. So work to do.
2021-02-14 22:20:58 -05:00
Thomas Harte
c284b34003
Resolves inability of ADB microcontroller to read its own ROM (!)
2021-02-13 17:53:40 -05:00
Thomas Harte
2c4dcf8843
Edges towards implementing an ADB device.
2021-02-12 21:50:24 -05:00
Thomas Harte
e83b2120ce
Tidies up, allows Operations and AddressingModes to be posted directly to ostreams.
2021-02-10 21:46:56 -05:00
Thomas Harte
3c7f9a43ad
Merge branch 'AppleIIgs' of github.com:TomHarte/CLK into AppleIIgs
2021-02-08 18:43:27 -05:00
Thomas Harte
82312d3b59
Provide a more convincing version of port output.
2021-02-08 18:14:08 -05:00
Thomas Harte
93a80a30d3
With correct divider appears to get reset requests posted.
2021-02-07 23:05:01 -05:00
Thomas Harte
77b1efd176
Sets sensible 'reset' values.
2021-02-07 21:53:57 -05:00
Thomas Harte
acfab1dfb3
Starts to make some effort at timers.
2021-02-06 21:02:44 -05:00
Thomas Harte
819e9039ab
Corrects printed target address for ZeroPageRelative
.
2021-02-04 20:54:31 -05:00
Thomas Harte
b8c6d4b153
Rips out my high-level ADB microcontroller protocol implementation.
...
Adds just enough that the main computer validates the ADB controller as present and talking.
2021-01-30 17:53:27 -05:00
Thomas Harte
5eddc92846
Implements direction registers.
2021-01-28 21:06:11 -05:00
Thomas Harte
f50e8b5106
If I'm going to maintain the max_address approach, & is 'correct'.
...
% +1 would be 'more correct', but I think this approach is probably misguided.
2021-01-27 18:31:11 -05:00
Thomas Harte
dcc2fe0990
Improves M50470 entry-point detection, adds test output.
2021-01-26 21:29:17 -05:00
Thomas Harte
56111c75ae
Makes first efforts towards disassembly.
2021-01-26 19:52:30 -05:00
Thomas Harte
cc90935abd
Starts to provide just a touch of reflection.
2021-01-26 19:22:00 -05:00
Thomas Harte
413e42e1b6
Attempts to fix BBC.
...
But thereby stops all ADB output.
2021-01-25 22:34:03 -05:00
Thomas Harte
fc4bda0047
Experimentally flipping interpretation of the output bit gives something closer to coherent.
2021-01-25 22:02:39 -05:00
Thomas Harte
c8beb59172
Attempts properly to track ADB bus activity.
...
Output is not yet a valid ADB stream. Work to do.
2021-01-25 17:43:22 -05:00
Thomas Harte
8789ffda15
Corrects performer storage, RMW/W confusion, implicit casts, port readback.
2021-01-24 22:30:42 -05:00
Thomas Harte
e8e604dc3c
Attempts to wire up M50470 and GLU.
...
Resulting in an unexpected interest in R15. Bugs to find, I guess.
2021-01-24 18:07:05 -05:00
Thomas Harte
57e0fdfadc
Ensures ADB microcontroller is clocked.
...
And runs at the 'correct' speed (i.e. modulo my instruction-by-instruction implementation).
2021-01-23 22:55:12 -05:00
Thomas Harte
36aebe0ff9
Posts cycle lengths.
2021-01-23 21:58:52 -05:00
Thomas Harte
051d2b83f4
Corrects TSX lookup.
2021-01-23 15:45:21 -05:00
Thomas Harte
17b12120eb
Corrects bit-selection shifts.
2021-01-21 23:13:00 -05:00
Thomas Harte
6e9ce50569
Corrects duration-based iteration.
2021-01-21 23:05:43 -05:00
Thomas Harte
adef2e9b4e
Starts formalising end conditions.
2021-01-21 22:36:44 -05:00
Thomas Harte
0fafbf5092
Completes M50740 instruction set.
2021-01-21 19:08:38 -05:00
Thomas Harte
c10c161d39
Implements ADC and SBC.
2021-01-21 18:53:24 -05:00
Thomas Harte
04024ca159
Adds BIT.
2021-01-20 21:41:43 -05:00
Thomas Harte
64d556f60f
Implements shifts and rotates.
2021-01-20 21:39:13 -05:00
Thomas Harte
8564e7406b
Corrects index-mode CMP, LDA.
2021-01-20 21:32:46 -05:00
Thomas Harte
ebdb58d790
Seemingly advances to the first indefinite loop.
2021-01-20 21:18:52 -05:00
Thomas Harte
cf8afc70b2
Takes a swing at BBC, BBS.
2021-01-20 20:52:04 -05:00
Thomas Harte
4f02e8fbaf
Knocks off the low-hanging instruction fruit.
2021-01-20 20:41:35 -05:00
Thomas Harte
6e618a6bb7
Adds a list of missing instructions.
...
Not looking too bad; subject to not yet having a strategy for interrupts, timing, nothing yet implemented for timers, IO ports...
2021-01-20 20:37:35 -05:00
Thomas Harte
df1bc18fb3
Pushes ahead to what will be my first interaction with the T flag.
2021-01-20 20:27:09 -05:00
Thomas Harte
9f12ce2fb8
Corrects RTS, adds the remainder of the direct flag manipulations.
2021-01-20 20:16:55 -05:00
Thomas Harte
b9672c0669
Gets beyond a prima facie convincing JSR/RET.
2021-01-20 18:21:44 -05:00
Thomas Harte
e58608b25a
Gets as far as executing a first loop.
2021-01-20 18:15:24 -05:00
Thomas Harte
e502d76371
Corrects immediate instruction length, muddles through to having to parse a second program segment.
...
Albeit with JSR not yet properly implemented.
2021-01-19 22:12:18 -05:00
Thomas Harte
b0c790f3c6
Adds enough flags seemingly to reach an ASL.
2021-01-19 21:54:15 -05:00
Thomas Harte
aa478cd222
Stops trying to force bit ID into the addressing mode.
2021-01-19 21:51:01 -05:00
Thomas Harte
c78c121159
Succeeds at executing a single instruction.
2021-01-18 20:16:01 -05:00
Thomas Harte
e71e506883
This assert is redundant; not worth an extra #include.
2021-01-18 17:56:40 -05:00
Thomas Harte
a601ac0cab
Corrects performer population, lookup, calls.
2021-01-18 17:53:14 -05:00
Thomas Harte
9b92753e0a
In theory this should 'execute' up to the first unconditional branch.
...
Where execution means: do very little.
2021-01-18 17:11:11 -05:00
Thomas Harte
ec0018df79
Routes in the ADB keyboard ROM. This should get as far as parsing.
2021-01-18 16:59:49 -05:00
Thomas Harte
8b19c523cf
Starts to bend towards getting some performers in motion.
2021-01-18 16:45:52 -05:00
Thomas Harte
5ace61f9b9
Continues walking very slowly towards cached execution.
2021-01-18 11:20:45 -05:00
Thomas Harte
8a74f5911c
Minor reorganisation to finish the day.
2021-01-17 21:56:15 -05:00
Thomas Harte
4982430a29
Takes a run at most of the remaining addressing modes.
2021-01-17 21:52:16 -05:00
Thomas Harte
dea79c6dea
Adds missing #include.
2021-01-17 20:56:22 -05:00
Thomas Harte
ad03858c6e
Switches performers to member functions. Very slightly starts work on M50740 performers.
2021-01-17 20:53:11 -05:00
Thomas Harte
54b26c7991
Bends to using 8-bit lookups for M50740 instructions.
2021-01-17 20:03:36 -05:00
Thomas Harte
17c3a3eb4b
Seeks to switch to maintaining a bank of performers.
...
My thinking here is that for really simple processors there'll be 256 or less, meaning that they can be stored by simple uint8_t; for every other processor I can currently think of it'll likely be uint16_t.
Either way, that's a much better outcome than using plain pointers, which on architectures I currently build for will always be 8 bytes. For the simple processors I can get eight times as much into the cache; for the others four times.
2021-01-17 19:38:23 -05:00
Thomas Harte
5f413a38df
Switches all American-style dates.
...
I'd failed to configure my new computer appropriately, it seems.
2021-01-16 22:09:19 -05:00
Thomas Harte
8860d0ff51
Starts to establish the CachingExecutor.
2021-01-16 22:06:16 -05:00
Thomas Harte
8bd471fa3c
Corrects recursive call.
2021-01-16 21:50:48 -05:00
Thomas Harte
cd6ac51aa6
Muddles along to generating functions.
...
Albeit right now without a body.
2021-01-16 21:45:44 -05:00
Thomas Harte
10caa1a1fb
Steps gingerly towards execution.
2021-01-16 20:51:02 -05:00
Thomas Harte
722e0068ca
Adds additional exposition.
2021-01-16 20:10:20 -05:00
Thomas Harte
8f2eea8819
Corrects AccessType::Read.
2021-01-16 20:04:48 -05:00
Thomas Harte
3b2d65fa16
Adds access type declaration.
2021-01-16 20:04:01 -05:00
Thomas Harte
3dc36b704a
Starts on the next piece: parsers.
2021-01-16 19:54:40 -05:00
Thomas Harte
37a20e125c
Completes the M50740 decoder.
...
Completely untested.
2021-01-15 22:47:52 -05:00
Thomas Harte
2910faf963
Adds missing #include.
2021-01-15 22:33:14 -05:00
Thomas Harte
1acb8c3c42
Completes the opcode map.
2021-01-15 22:24:37 -05:00
Thomas Harte
f667dd223f
Advances to 50% of the opcode map.
2021-01-15 22:05:34 -05:00
Thomas Harte
e0d90f69ec
Fills in the first quarter of the opcode map.
2021-01-15 21:58:46 -05:00
Thomas Harte
d82187bee2
Decides to shove bit number into AddressingMode
.
2021-01-15 21:50:05 -05:00
Thomas Harte
3c20e1f037
Adds files for the M50740 and corrects namespace errors elsewhere.
2021-01-15 21:30:30 -05:00
Thomas Harte
9c2c918760
Better sorts by function, corrects TEST description.
2021-01-15 21:07:02 -05:00
Thomas Harte
47d20699d8
Completes list, ensures POP acts as documented.
2021-01-15 20:48:31 -05:00
Thomas Harte
e8ce70dccb
Chips further away at documentation.
2021-01-15 18:52:59 -05:00
Thomas Harte
fa4938f29c
Establishes the reason I'm sort-of documenting these.
2021-01-15 18:27:55 -05:00
Thomas Harte
ddb4bb1421
Better plans project layout.
2021-01-15 18:16:01 -05:00