6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-11-26 23:52:26 +00:00
Code Issues Projects Releases Wiki Activity
8,822 Commits 8 Branches 121 Tags 496 MiB
efeee5160e
Commit Graph

299 Commits

Author SHA1 Message Date
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