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
66b95a8b54
Merge pull request #1217 from TomHarte/PCFDC
...
Sketch the outline of a high-level emulation of the PC FDC
2023-11-29 12:48:55 -05:00
Thomas Harte
ab586b9965
Merge pull request #1224 from ryandesign/patch-3
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Handle C, E, F operations in Disk II state machine
2023-11-29 12:48:39 -05:00
Thomas Harte
cd2567d868
Merge pull request #1222 from ryandesign/patch-1
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Fix typo in comment in AppleDSK.hpp
2023-11-29 12:48:10 -05:00
Thomas Harte
c07ae43980
Merge pull request #1221 from TomHarte/More68000TemplateActions
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Enable further compile-time optimisations.
2023-11-29 12:47:48 -05:00
Thomas Harte
4e10ef2816
Merge pull request #1223 from ryandesign/patch-2
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Fix typo in comment in WOZ.cpp
2023-11-29 12:40:22 -05:00
Thomas Harte
8d01829fa7
Adopt PC-style naming, limit to one drive.
2023-11-29 11:35:21 -05:00
Thomas Harte
be842ee2f1
Add drive indicator lights.
2023-11-29 11:31:37 -05:00
Thomas Harte
e034daa6c8
Capture motor state.
2023-11-29 09:52:16 -05:00
Thomas Harte
ce4bcf9064
Improve comment.
2023-11-29 09:50:08 -05:00
Thomas Harte
a992ae37b1
Mildly rearrange, to match enum order.
2023-11-29 09:49:15 -05:00
Thomas Harte
439104c73a
Add missing space.
2023-11-29 09:49:05 -05:00
Thomas Harte
fbbe3ab7f1
Include seek ended flag.
2023-11-29 09:45:45 -05:00
Thomas Harte
6e2e67fd46
Sculpt out enough to get to a read data command.
2023-11-29 09:42:43 -05:00
Ryan Carsten Schmidt
3293ab48ce
Handle C, E, F operations in Disk II state machine
...
This shouldn't matter since these operations are not requested by the
state machine but this is what those operations should do according to
Understanding the Apple II, Table 9.3, page 9-15.
2023-11-29 05:50:20 -06:00
Ryan Carsten Schmidt
2e314e7a08
Fix typo in comment in WOZ.cpp
2023-11-29 03:42:39 -06:00
Thomas Harte
3827a084ad
Code to GlaBIOS expectations.
2023-11-28 23:18:22 -05:00
Ryan Carsten Schmidt
afc62f3d94
Fix typo in comment in AppleDSK.hpp
2023-11-28 22:09:35 -06:00
Thomas Harte
301442a0b1
Fix meaning of flag, use correctly.
2023-11-28 22:34:34 -05:00
Thomas Harte
dd4bcf68bf
Load up on debugging logs.
2023-11-28 15:09:57 -05:00
Thomas Harte
b860fba0a3
Make an attempt at providing varied sense interrupt statuses.
2023-11-28 14:12:39 -05:00
Thomas Harte
7171e24ccf
Enable further compile-time optimisations.
2023-11-28 13:50:53 -05:00
Thomas Harte
c19c356c10
Add disabled longer serialisation.
2023-11-27 23:23:00 -05:00
Thomas Harte
8fec9bef11
Attempt IRQ logic.
2023-11-27 23:16:24 -05:00
Thomas Harte
bffe3ffa25
Add an 8272 results phase.
2023-11-27 23:05:37 -05:00
Thomas Harte
993366ac5a
Merge branch 'master' into PCFDC
2023-11-27 22:16:30 -05:00
Thomas Harte
b07cc5c2ec
Merge pull request #1219 from TomHarte/68000TemplatedPerform
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Sometimes provide 68000 bus operations at compile time.
2023-11-27 21:54:24 -05:00
Thomas Harte
36a4629ce0
Explain new semantics.
2023-11-27 21:49:57 -05:00
Thomas Harte
87eec47b79
Mildly reduce cost of 8-byte ROM overlay.
2023-11-27 15:48:30 -05:00
Thomas Harte
2a0375e9c2
Mildly adjust layout of inner loop.
2023-11-27 15:16:22 -05:00
Thomas Harte
032eeb4757
Eliminate runtime switch.
2023-11-27 14:57:41 -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
291723e85e
Insert notes to self, trying to tie down FloppyController interface.
2023-11-27 10:27:36 -05:00
Thomas Harte
d2203484cc
Avoid name duplication.
2023-11-26 15:29:08 -05:00
Thomas Harte
003c494aac
Factor out a large number of status-related facts.
2023-11-26 15:04:10 -05:00
Thomas Harte
a6a464c240
Add printed TODO.
2023-11-25 21:40:13 -05:00
Thomas Harte
9bd75464b5
Proceed to receiving a sense interrupt status.
2023-11-25 18:15:37 -05:00
Thomas Harte
0bb048e24b
Start formalising/extracting 8272 status.
2023-11-25 18:10:49 -05:00
Thomas Harte
8c70317d31
Introduce interrupt.
2023-11-24 23:06:52 -05:00
Thomas Harte
dd135bf3fe
Start experimenting with a possible end-of-reset interrupt?
2023-11-24 22:41:33 -05:00
Thomas Harte
2efb5236f7
Add an agent for floppy control.
2023-11-24 22:19:39 -05:00
Thomas Harte
af70c8847d
Factor out the stuff of accumulating and dissecting commands.
2023-11-24 18:24:58 -05:00
Thomas Harte
d5c30e3175
Add enough keyboard support to be able to bypass the initial FDC BIOS failure report.
2023-11-24 13:38:06 -05:00
Thomas Harte
ed31cfd80a
Merge pull request #1216 from TomHarte/ReduceNoise
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Limit extraneous printing.
2023-11-23 23:05:46 -05:00
Thomas Harte
89423f28ef
Limit extraneous printing.
2023-11-23 22:47:31 -05:00
Thomas Harte
593c32f621
Merge pull request #1215 from TomHarte/PCKeyboard
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Attempt to implement the XT keyboard controller.
2023-11-23 22:26:09 -05:00
Thomas Harte
019d987623
Clear buffer on read.
2023-11-23 22:16:08 -05:00
