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Author SHA1 Message Date
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 
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 
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 
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
Thomas Harte
7e8020df59 Avoid a spurious initial interrupt. 2023-11-23 22:15:20 -05:00
Thomas Harte
44d602e0f6 Seriously attempt a keyboard controller. 2023-11-23 22:10:51 -05:00
Thomas Harte
0674da0325 Flip IRQ priority. 2023-11-23 15:41:24 -05:00
Thomas Harte
113fc9f757 Add further TODO. 2023-11-23 15:29:43 -05:00
Thomas Harte
2c31452629 Add TODO, as exposition. 2023-11-23 15:19:31 -05:00
Thomas Harte
505df78108 Add column duplication, switch to green. 2023-11-23 15:18:28 -05:00
Thomas Harte
d92d0e87ac Honour MDA attributes. 2023-11-23 14:51:32 -05:00
Thomas Harte
df9e9c2c4d Start accumulating notes. 2023-11-22 15:21:45 -05:00
Thomas Harte
b3c07b76ee
Merge pull request #1214 from TomHarte/MDAOutput 
Add basic MDA text output.
 2023-11-22 15:04:21 -05:00
Thomas Harte
e0f72f2048 Tidy up. 2023-11-22 14:18:58 -05:00
Thomas Harte
825f3184eb Explain provenance. 2023-11-22 14:18:50 -05:00
Thomas Harte
a293a3a816 Document the future. 2023-11-22 14:14:53 -05:00
Thomas Harte
b22b489380 Mask into 4kb; I don't know whether hardware scrolling is in use. 2023-11-22 14:12:57 -05:00
Thomas Harte
231de8440e Add text display. 2023-11-22 14:11:22 -05:00
Thomas Harte
8993a9c4c1 Import MDA font. 2023-11-22 14:04:26 -05:00
Thomas Harte
381537fde9 Get as far as MDA being able to fetch. 2023-11-22 13:52:28 -05:00
Thomas Harte
f249e4ada6 Maintain an actual pixel buffer. 2023-11-22 13:40:50 -05:00