Thomas Harte
5b5ae69a18
Convert set_logical_flags and set_arithmetic_flags to lambdas.
2024-01-16 10:13:30 -05:00
Thomas Harte
de038fe28f
Eliminate easy macros from Z80 implementation.
2024-01-16 09:43:41 -05:00
Thomas Harte
66bc1fd6fd
Don't mix constructor delegation and variable instantiation.
2023-12-22 12:29:27 -05:00
Thomas Harte
c07f8d8ef8
Switch ordering.
2023-12-22 10:50:49 -05:00
Thomas Harte
dbb14467ec
Remove redundant using, add extra comment.
2023-12-22 10:48:35 -05:00
Thomas Harte
c266639a0c
Improve commentary; use specialised types for TAS.
2023-12-22 10:46:10 -05:00
Thomas Harte
5b43ea82f3
Lock down interrupt cycle types.
2023-12-21 23:12:14 -05:00
Thomas Harte
7c28a77b2b
Fill in assignment operator.
2023-12-21 23:09:42 -05:00
Thomas Harte
85f814c632
Attempt to build fixed operations into type.
...
This simplifies callees and should make all helper functions automatically able to optimise themselves for fixed operations.
2023-12-21 23:08:18 -05:00
Thomas Harte
213dfe037d
Shift operation stuff into its own namespace, making data_select_active a free function.
2023-12-21 16:03:53 -05:00
Thomas Harte
faaa89bb67
Eliminate all reference to EmuTOS.
2023-12-21 15:28:45 -05:00
Thomas Harte
1f2fbccf1f
Update documentation.
2023-12-20 22:05:45 -05:00
Thomas Harte
356d8f469a
Correct various throaway -> throwaway.
2023-12-20 22:02:51 -05:00
Thomas Harte
60bd81c4cc
Use X.
2023-12-20 22:02:51 -05:00
Thomas Harte
38c3d302a3
Restore JMP (abs, x) length.
2023-12-20 22:02:51 -05:00
Thomas Harte
24c80060c8
Revise guess on JMP (abs, x).
2023-12-20 22:02:51 -05:00
Thomas Harte
d33deb676f
Adjust (abs, y) addressing.
2023-12-20 22:02:19 -05:00
Thomas Harte
bf5ed98f35
Generalise 65c02 behaviour.
...
Partly to convince myself:
1. this change alters behaviour of `CycleAddXToAddressLowRead`
2. which affects only `AbsoluteXw` and the 65c02-specific `JMP (abs, x)`;
3. `AbsoluteXw` is then used only by `AbsoluteXWrite` and `AbsoluteXReadModifyWrite`;
4. `AbsoluteXWrite` is used for abs, x addressing by `SHY`, `STA` and `STZ`;
5. `AbsoluteXReadModifyWrite` is used for `ASL`, `ASO`, `ROL`, `RLA`, `LSR`, `LSE`, `ROR`, `RRA`, `DEC`, `DCP`, `INC` and `INS`.
... though many of the latter are replaced by instance of `FastAbsoluteXReadModifyWrite` for the 65c02 which don't include a dummy
access at all if the page boundary is crossed so the issue is moot.
2023-12-20 22:02:14 -05:00
Thomas Harte
f25aaf2bb3
Adjust 65c02 STA abs,x behaviour.
2023-11-29 15:32:02 -05:00
Thomas Harte
7171e24ccf
Enable further compile-time optimisations.
2023-11-28 13:50:53 -05:00
Thomas Harte
36a4629ce0
Explain new semantics.
2023-11-27 21:49:57 -05:00
Thomas Harte
5c7f94d2ef
Introduce the possibility of operation type as a template parameter.
...
It's already proven possible to provide this for instruction fetch, so I think it'll immediately be a win. But more importantly it opens a path forwards for further improvement.
2023-11-27 11:48:34 -05:00
Thomas Harte
e46e42d896
This is the same test either way around.
2023-10-09 16:47:02 -04:00
Thomas Harte
1cb26cb141
Pull add/sub distinction into templates.
2023-10-09 16:40:50 -04:00
Thomas Harte
873b1122ab
Correct SHA, SHX, SHY, SHS when page boundary crossed.
2023-09-21 15:31:04 -04:00
Thomas Harte
74b5ad93c4
Don't necessarily apply D for ARR.
2023-09-20 10:17:00 -04:00
Thomas Harte
43dfb729d3
Explain even better.
2023-09-02 14:45:53 -04:00
Thomas Harte
543be49cf8
Merge branch 'master' into 65C02BCDTest
2023-09-01 16:39:18 -04:00
Thomas Harte
1fb278c9f1
Fix abs,x NOP length.
2023-09-01 14:31:21 -04:00
Thomas Harte
19ec63b4fb
Add exposition, slightly simplify, unbreak INS.
2023-09-01 09:29:35 -04:00
Thomas Harte
4d6ffa7a2e
With some degree of hit and hope, correct 65C02 results.
2023-08-31 15:28:59 -04:00
Thomas Harte
39ee75d94a
Clean up decimal SBC implementation.
2023-08-31 15:02:17 -04:00
Thomas Harte
13be247495
Comment.
2023-08-30 23:08:42 -04:00
Thomas Harte
cdcac7c11c
Simplify top nibble handling.
2023-08-30 23:07:54 -04:00
Thomas Harte
67cd5dd63b
Simplify top nibble decision.
2023-08-30 23:06:00 -04:00
Thomas Harte
139a1a2acc
Clean up decimal ADC.
2023-08-30 23:04:38 -04:00
Thomas Harte
5dae726857
Differentiate non-fetching and fetching NOPs.
2023-08-29 16:50:39 -04:00
Thomas Harte
7815d18676
Merge branch 'master' into 65816StackAgain
2023-08-19 15:55:45 -04:00
Thomas Harte
ca75822dbe
Fix restart_operation_fetch.
2023-08-17 15:42:34 -04:00
Thomas Harte
d9df568dab
Add faulty restart_operation_fetch.
2023-08-17 15:38:28 -04:00
Thomas Harte
26343148ae
Use simplified control lines when appropriate.
2023-08-17 15:32:02 -04:00
Thomas Harte
fd0fe66851
Omit unsupported registers and flags.
2023-08-17 15:24:08 -04:00
Thomas Harte
833613b68a
Fix S top byte overwrite.
2023-08-17 14:50:55 -04:00
Thomas Harte
42024c1573
Don't allow setting of an invalid S.
2023-08-07 09:19:20 -04:00
Thomas Harte
54103f1f34
Fix SH=1 reset; appropriate TCS.
2023-08-05 15:06:18 -04:00
Thomas Harte
c0eb401d04
Add a between-instructions enforcement of SH = 1.
2023-08-05 14:57:43 -04:00
Thomas Harte
2262725010
Reveal 16-bit stack pointer when asked, regardless of mode.
2023-07-31 17:08:02 -04:00
Thomas Harte
e61a4eb5a9
Regularise PHD and PLD.
2023-07-30 16:36:29 -04:00
Thomas Harte
acd7f9f4cd
Fix stack usage of JSL.
2023-07-30 16:34:42 -04:00
Thomas Harte
9f1a657cc4
Fix stack usage of PEA.
2023-07-30 16:33:44 -04:00
