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.
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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.
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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.
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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.
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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.
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(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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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10 to go.
2020-10-14 21:17:28 -04:00
Thomas Harte
b22aa5d699
Starts transcribing the addressing examples I have into tests.
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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.
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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
