6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-12-13 00:29:14 +00:00
Code Issues Projects Releases Wiki Activity
11,889 Commits 10 Branches 121 Tags 500 MiB
a6ba549b67
Commit Graph

204 Commits

Author SHA1 Message Date
Thomas Harte
ec98736bd7 Ensure IO cycles don't produce an address of (PC+1). 2022-06-21 11:41:05 -04:00
Thomas Harte
586ef4810b Add restart_operation_fetch, to aid with testing. 2022-06-18 16:25:57 -04:00
Thomas Harte
8a18685902 Relocated RegisterSizes to Numeric. 2022-04-28 15:10:08 -04:00
Thomas Harte
51d98ef9ab Add missing stddef header where size_t is used. 2021-07-01 23:15:32 -04:00
Thomas Harte
c8471eb993 Adds various asserts, some comments. 2021-03-03 20:47:45 -05:00
Thomas Harte
83d0cfc24e Improves commentary. 2021-03-03 20:33:28 -05:00
Thomas Harte
f6466fd657 Remove temporary hackery. 2021-02-19 22:47:50 -05:00
Thomas Harte
72d7901c88 Takes a shot at the keyboard data full flag. 
Just a guess. But likely?
 2021-02-19 20:06:12 -05:00
Thomas Harte
992ee6d631 Don't zero out the program bank until after it has headed stackward. 2021-02-17 22:08:08 -05:00
Thomas Harte
3c887aff95 Improves consistency. 2021-01-21 18:58:22 -05:00
Thomas Harte
e0b36c9c3d Corrects PBR/DBR resetting upon an exception. 2020-12-29 15:27:49 -05:00
Thomas Harte
574a37814c Attempts to fix exception selection and timing. 2020-12-08 18:46:30 -05:00
Thomas Harte
c72bdd776e Adds a new assert: I think this is the issue getting into GS/OS. 2020-12-07 22:43:24 -05:00
Thomas Harte
9e0e063f8a Resolves one further GCC warning. 
Technically this leaves one further, on a temporary printf I have in my IIgs. I'll fix that when I strip all this caveman stufff.
 2020-11-22 21:57:48 -05:00
Thomas Harte
8ace258fbc Tackles outstanding GCC warnings. 2020-11-22 21:43:56 -05:00
Thomas Harte
cdacf280e1 After much extra logging, corrects destination bank for MVN and MVP. 2020-11-15 16:08:29 -05:00
Thomas Harte
d3c7253981 Shifts size-limiting of X and Y to transitions and mutations, away from reads. 
Primarily to remove potential bug-causing complexity — this is easier to debug. But let's see.
 2020-11-04 20:35:41 -05:00
Thomas Harte
d50b059a17 Imports 6502-esque test for decimal SBC overflow. 
All applicable krom tests now pass.
 2020-11-03 20:37:30 -05:00
Thomas Harte
cc5ec78156 Provides something on WAI/STP; sizes STY by the x flag; disables MSC test. 2020-11-03 20:17:44 -05:00
Thomas Harte
5cbb91f352 Fixes COP vector, ensures WDM skips a byte. 2020-11-03 20:01:02 -05:00
Thomas Harte
91ea2eff4c Corrects MVN/MVP off-by-one and failure to store what was read. 2020-11-03 18:29:35 -05:00
Thomas Harte
bf85d71674 Brings ADC into conformance. Fixes JML. 2020-11-03 18:12:10 -05:00
Thomas Harte
3889646d6b Takes a swing at incorporating krom's 65816 test suite. At least as far as ADC. 2020-11-02 21:09:32 -05:00
Thomas Harte
0178aaee2b Attempts retroactively to enforce the rule that 8-bit index modes => no top byte. 
(Rather than a preserved but ignored top byte)
 2020-11-02 18:55:28 -05:00
Thomas Harte
e8943618dc Adds some extra commentary and distinguishes X/Y sizing from M. 2020-10-31 10:21:13 -04:00
Thomas Harte
1ae2f6f449 PHD and PLD should always be 16-bit; PLP 8-bit. 2020-10-31 09:22:35 -04:00
Thomas Harte
88e26b42f5 Fixed: PHP pushes only 8 bits regardless of mode. 2020-10-30 22:36:00 -04:00
Thomas Harte
7f3f6c339f Corrects stacked program bank during native-mode exceptions. 2020-10-30 20:11:39 -04:00
Thomas Harte
266022b193 Fixes PEA. 2020-10-28 22:00:28 -04:00
Thomas Harte
1df2ce513a Ensures that reset doesn't push to the stack. 2020-10-28 21:23:35 -04:00
Thomas Harte
1e4679ae14 Corrects JSL and RTL. 2020-10-28 17:25:40 -04:00
Thomas Harte
b3ab9fff9b Imports a custom-built copy of Klaus Dormann's 65C02 test, with only 65816-compatible parts. 
Thereby fixes another couple of 65816 issues — BRK(, etc) not clearing the decimal flag, and `TRB d` being mismapped.
 2020-10-19 19:27:16 -04:00
Thomas Harte
14718b93a4
Improve commentary. 2020-10-19 09:32:50 -04:00
Thomas Harte
76d9893866 Declares address-bus sizes formally. 
This allows me to fix the final two implicit conversion warnings, albeit that it would have been nice to find a templatey way just to get the type directly from the declaration of `perform_bus_operation`.
 2020-10-18 15:08:21 -04:00
Thomas Harte
c3f8982c62 Resolves all internal implicit type-conversion warnings. 
Chasing those down, it looks like flags were wrong for PLB and PLD. So it's official: warnings help.
 2020-10-18 14:55:17 -04:00
Thomas Harte
99eba2f8ba Ensures intended 65816 exception behaviour. 
i.e. the relevant micro-op sequence exists, and its operation isn't lost. Also sets the 65816 by default to jump straight into power-on, not to execute an instruction first. That shouldn't make a functional difference, but it makes debugging easier because it makes startup fully deterministic.
 2020-10-18 14:43:47 -04:00
Thomas Harte
3b398f7a9a Attempts to complete all 65816 bus signalling. 2020-10-16 21:56:20 -04:00
Thomas Harte
096add7551 Exposes non-BusOperation bus outputs. 2020-10-16 21:05:42 -04:00
Thomas Harte
334e0666b7 Reports ::Ready upon a WAI. 2020-10-15 21:37:37 -04:00
Thomas Harte
98c81749c8 Adds the conventional flush. 2020-10-15 21:36:04 -04:00
Thomas Harte
9c0c0255f6 Ensures data/program bank can't accidentally be set to 16-bit values. 2020-10-15 21:10:32 -04:00
Thomas Harte
68c15bd605 Updates Qt project; catches another couple of issues via its compiler. 2020-10-15 21:09:22 -04:00
Thomas Harte
7aa6cf4c6b Tidies up layout very slightly. 2020-10-15 20:51:23 -04:00
Thomas Harte
dfda2adf0d Attempts implementations of both ready and abort. 
Which I think concludes the inputs?
 2020-10-15 20:46:18 -04:00
Thomas Harte
c0a1c34012 Wraps all registers into a struct, so that I can implement abort. 
Makes some preparations for ready too.
 2020-10-15 18:42:38 -04:00
Thomas Harte
3c6adc1ff4 Completes 65816 addressing mode tests and corresponding fixes. 2020-10-14 22:00:52 -04:00
Thomas Harte
e511d33a7c Adds test for [d], y; fixes implementation. 2020-10-14 21:42:41 -04:00
Thomas Harte
27afb8f0a7 Adds direct indirect long test, and thereby fixes addressing mode. 
Nine to go!
 2020-10-14 21:26:20 -04:00
Thomas Harte
327ab81436 Fills in direct, x and (direct) tests, fixing implementation of the latter. 
10 to go.
 2020-10-14 21:17:28 -04:00
Thomas Harte
b22aa5d699 Starts transcribing the addressing examples I have into tests. 
Correspondingly extends the exposed register set and test-machine addressing range.
 2020-10-13 21:38:30 -04:00
Thomas Harte
3e6a2adaaf Corrects absolute, x and absolute, y addressing modes. 2020-10-13 20:30:39 -04:00
Thomas Harte
8f5537aaaa Attempts to resolve my direct-indirect addressing stumble. 2020-10-13 20:21:53 -04:00
Thomas Harte
a15d4a156b Starts trying to ensure appropriate address wrapping. 2020-10-12 22:33:43 -04:00
Thomas Harte
7479dc74ed Removes printf. It's no longer telling me anything. 2020-10-12 21:52:58 -04:00
Thomas Harte
28da1a724a Introduces Jeek816 test case. 2020-10-12 21:43:44 -04:00
Thomas Harte
f529eadbec Corrects 16-bit read-modify-write. 
Subject to the TODO proviso on 'correct'; has my 6502 prejudice pushed me into unrealistic bus signalling?
 2020-10-12 18:36:09 -04:00
Thomas Harte
5dc3cd3a2f Starts using Jeek816 for a basic native-mode audit. Fixes absolute long addressing. 2020-10-11 22:02:46 -04:00
Thomas Harte
82797fd395 Attempts to do the proper thing for interrupts. 2020-10-11 21:10:44 -04:00
Thomas Harte
a0885ab7d0 Implements STP and WAI. 
Albeit still without fully-implemented reactions to exceptions in general.
 2020-10-11 17:56:55 -04:00
Thomas Harte
8eaf1303a3 Attempts proactively to ensure proper RTI behaviour on the 65816. 2020-10-11 15:25:13 -04:00
Thomas Harte
20cbe72985 Ties to 8- or 16-bit those instructions that aren't M/X-dependent. 
This is technically redundant for PEI, PEA and PER since they have dedicated bus programs anyway, but it's good to be explicit.
 2020-10-11 14:38:35 -04:00
Thomas Harte
071ad6b767 I don't think RTL is needed; JML looks like it covers it. 2020-10-10 22:16:35 -04:00
Thomas Harte
0619e49eac Takes a short at TSB and TRB. 
Three to go.
 2020-10-10 22:00:17 -04:00
Thomas Harte
b8848d8580 Implements TCD, TDC, TCS, TSC. 2020-10-10 21:43:05 -04:00
Thomas Harte
aface1f8be Implements XBA and XCE. 2020-10-10 21:34:22 -04:00
Thomas Harte
ae87728770 Ensures M and X are exposed to the public interface. 2020-10-10 21:33:56 -04:00
Thomas Harte
28c8ba70c1 Implements REP and SEP and exposes the MX flags generally. 2020-10-10 21:23:59 -04:00
Thomas Harte
6892ac13e8 Corrects BIT. All 65816-applicable Wolfgang Lorenz tests now pass. 2020-10-10 17:47:33 -04:00
Thomas Harte
0fe09cd1e4 Knocks SBC into producing likely results; disables Lorenz testing. 2020-10-10 17:13:16 -04:00
Thomas Harte
da4702851f Fixes ADC. 2020-10-10 16:29:48 -04:00
Thomas Harte
d17c90edf7 Corrects ROL d, x. 2020-10-10 11:25:14 -04:00
Thomas Harte
7966592fae Corrects ROL d. 2020-10-10 11:22:23 -04:00
Thomas Harte
6efe4e1753 Fixes AND, EOR, ORA. Takes an unsuccessful shot at ROL. 2020-10-10 10:53:17 -04:00
Thomas Harte
536c4d45c1 Adds additional 65816 tests, some failing; seeks to improve carry behaviour in ASL and ROL. 2020-10-10 10:11:57 -04:00
Thomas Harte
290598429a Applies indirect page zero emulation mode addressing constraint to ix addressing. 
Lorenz's LDA tests now pass in emulation mode.
 2020-10-09 23:22:48 -04:00
Thomas Harte
92e72959c3 Makes corrections to ix addressing mode and shift/roll flags. 2020-10-09 23:12:20 -04:00
Thomas Harte
c01bc784b9 Slightly reduces branching. 2020-10-09 22:21:55 -04:00
Thomas Harte
abcd86a294 Fixes accumulator instructions. 2020-10-09 22:18:22 -04:00
Thomas Harte
451f83ba51 Corrects emulation-mode read-modify-writes not to empty the data buffer. 2020-10-09 22:14:42 -04:00
Thomas Harte
b439f40fe2 Corrects INC and DEC. 2020-10-09 22:04:25 -04:00
Thomas Harte
968166b06d Resolves incorrectly flow after setting up an absolute address. 2020-10-09 21:48:35 -04:00
Thomas Harte
0ed98cbfac Attempts to fix direct indirect indexed; not yet successful I think. 2020-10-08 22:15:19 -04:00
Thomas Harte
7dde7cc743 Implements altered direct indexed addressing in emulation mode. 2020-10-08 22:02:14 -04:00
Thomas Harte
755627f12d Corrects direct addressing. 2020-10-08 20:00:01 -04:00
Thomas Harte
f8004d7096 Implements RTI, corrects TAY. 2020-10-08 18:06:11 -04:00
Thomas Harte
0418f51ef2 Takes a shot at emulation-mode 'exceptions'. 
It's just RTI and correct decimal SBC left of the official 6502s now, I think.
 2020-10-08 17:52:13 -04:00
Thomas Harte
054e0af071 Corrects RTS behaviour: the return address on the stack is off by one. 
Dormann's tests now proceed to a BRK.
 2020-10-08 16:55:45 -04:00
Thomas Harte
907c3374c3 Attempts to clean up my JMP/JSR mess. 
Also takes a step forwards in decimal SBC, but it's not right yet.
 2020-10-08 16:48:46 -04:00
Thomas Harte
f83ee97439 PHP pushes with the BRK flag set in emulation mode. 2020-10-07 21:37:50 -04:00
Thomas Harte
19aea85184 Corrects CMP, CPX, CPY carry flags. 2020-10-07 21:23:29 -04:00
Thomas Harte
1ba0a117e7 Corrects PLB, PLD, PLP. 2020-10-07 20:23:53 -04:00
Thomas Harte
b510b9d337 Adds PHD, PHK and 8-bit PHP and PLP. 2020-10-07 20:13:12 -04:00
Thomas Harte
b608e11965 Realises that not all non-incrementing PC fetches should be thrown away. 2020-10-07 20:06:27 -04:00
Thomas Harte
e68b3a2f32 Corrects JMP program. 2020-10-07 19:59:29 -04:00
Thomas Harte
f7b119ffe1 Moves temporary logging, fixes branch instructions. 2020-10-07 19:57:58 -04:00
Thomas Harte
a4cec95db1 Corrects load and transfer flag oversights. 2020-10-07 19:36:23 -04:00
Thomas Harte
84c4fa197b Corrects DEX mapping, notes new Dormann failure case. 2020-10-07 18:48:03 -04:00
Thomas Harte
eac722cf59 Implements enough of ADC and SBC for the Dormann test definitively to fail. 2020-10-07 18:36:17 -04:00
Thomas Harte
7439a326a6 Implements BIT (in regular and immediate forms). 2020-10-07 18:15:18 -04:00
Thomas Harte
5ca1c0747f Generalises CMP to implement CPX and CPY. 2020-10-07 18:09:56 -04:00