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11,643 Commits 8 Branches 121 Tags 496 MiB
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11643 Commits

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Author SHA1 Message Date
Thomas Harte
3b62a2fe7a Restrict video buffer to first 512kb. 2024-04-01 21:39:10 -04:00
Thomas Harte
7c9715f00c Change mind about carry behaviour. 2024-04-01 21:38:44 -04:00
Thomas Harte
7de92a9457 Slightly clean up shift code. 2024-04-01 21:24:49 -04:00
Thomas Harte
0866caf934 Flaws remain, but acknowledge that pixel rate is double. 2024-04-01 10:48:20 -04:00
Thomas Harte
914b88d115 Fix non-debug build. 2024-03-31 19:17:55 -04:00
Thomas Harte
cc122a7a68 Add an SWI count, to aid in logging. 2024-03-31 18:18:26 -04:00
Thomas Harte
31979649c6 As it continues to swell, factor out the junk. 2024-03-31 18:15:48 -04:00
Thomas Harte
335d13d06d Mildly improve logging, define a few more ROMs. 2024-03-30 21:49:21 -04:00
Thomas Harte
ec785f3a8a Add URL as comment. 2024-03-30 20:54:17 -04:00
Thomas Harte
1f83a5425e Complete list of all currently-failing SWIs. 
... a lot of which are probably failing correctly, i.e. they're appropriately signalling.
 2024-03-30 20:48:47 -04:00
Thomas Harte
4882d6d0f2 Start adding SWI detail. 2024-03-30 15:16:48 -04:00
Thomas Harte
722743659b Add missing space. 2024-03-29 21:52:57 -04:00
Thomas Harte
6e64a79b52 Log failed SWIs. 2024-03-29 21:31:33 -04:00
Thomas Harte
8a6bf84cff Keyboard: log more, ignore unrecognised commands. 2024-03-29 20:54:07 -04:00
Thomas Harte
a0fdd8f4eb Resolve magic constant. 2024-03-28 22:15:27 -04:00
Thomas Harte
bda1783624 Make new guess at non-byte IOC reads. 2024-03-28 22:10:49 -04:00
Thomas Harte
2a14557478 Be more disciplined about errant accesses. 2024-03-28 21:31:07 -04:00
Thomas Harte
0ddbc67b1f Switch to default CMOS RAM obtained from RISC OS itself. 2024-03-28 21:23:49 -04:00
Thomas Harte
ffb5149890 Reinstate real CMOS RAM results. 2024-03-28 14:27:07 -04:00
Thomas Harte
bb339d619f Eliminate trace test; I don't think I'm going to work it through. 2024-03-28 14:23:00 -04:00
Thomas Harte
2ed11877e8 Determine a couple of further exclusions. 2024-03-28 14:11:41 -04:00
Thomas Harte
ea6b83815b Add a further category of exclusions. 2024-03-28 14:01:37 -04:00
Thomas Harte
740b0e35d5 Completely bypass ignored tests. 2024-03-28 11:28:37 -04:00
Thomas Harte
2e7c1acb88 Add note on confusion. 2024-03-28 10:34:46 -04:00
Thomas Harte
4fcb85d132 Cleave off most remaining reasons for failure. 2024-03-28 10:32:27 -04:00
Thomas Harte
f175dcea58 Hack in some more potential debugging help. 2024-03-27 22:37:37 -04:00
Thomas Harte
c04c708a9d Trade some depth for breadth. 2024-03-27 22:37:10 -04:00
Thomas Harte
f4cf1e5313 Attempt to cleave by broad reason. 2024-03-27 22:36:37 -04:00
Thomas Harte
0e17f382a1 Capture further detail. 2024-03-27 22:36:03 -04:00
Thomas Harte
f38bca37a2 Take another run at MEMC. 
I hadn't spotted that it is valid to map different logical pages to the same physical page with different protection levels.
 2024-03-27 10:44:40 -04:00
Thomas Harte
166793ebe6 Reduce I2C chatter. 2024-03-26 21:54:42 -04:00
Thomas Harte
8b04d0e3ef Enhance and better-document I2C states. 2024-03-26 21:52:29 -04:00
Thomas Harte
a3931674dc Seemingly navigate I2C correctly. 2024-03-26 21:33:46 -04:00
Thomas Harte
bd4ef5ec57 Switch to acknowledgement-after. 2024-03-26 14:06:11 -04:00
Thomas Harte
3ba12630ab Quieten. 2024-03-26 12:27:37 -04:00
Thomas Harte
342d90c929 Advance CMOS/I2C to a seemingly-valid read. 2024-03-26 12:24:24 -04:00
Thomas Harte
9078fc994b Try to formalise I2C events. 2024-03-25 22:10:52 -04:00
Thomas Harte
f46af4b702 OS 3.11 seems to be able to get into BASIC. 2024-03-25 22:10:35 -04:00
Thomas Harte
b112987556 Do well enough at other colour depths. 2024-03-25 22:09:55 -04:00
Thomas Harte
fc880ac130 Double down on trans mode. 2024-03-25 21:32:56 -04:00
Thomas Harte
a2d95cb982 Shuffle notes. 2024-03-25 21:31:59 -04:00
Thomas Harte
d2776071e4 Speed up debug mode. 2024-03-25 21:31:33 -04:00
Thomas Harte
72a645ec1e Fix trans; take further crack at MEMC permissions. 2024-03-25 15:50:59 -04:00
Thomas Harte
1154ffd072 Add a 'drive in use' indicator LED. 2024-03-25 15:03:54 -04:00
Thomas Harte
8ba9708942 Hopefully resolve the mystery of the latch writes. 2024-03-25 14:54:30 -04:00
Thomas Harte
521fca6089 Expose full bus to IOC dependents; add notes. 2024-03-25 11:07:44 -04:00
Thomas Harte
ae684edbe1 Formally decode bank/offset/type. 2024-03-25 10:16:36 -04:00
Thomas Harte
fa0a9aa611 Eliminate 'has_moved_rom_'. 2024-03-24 22:36:11 -04:00
Thomas Harte
5da9e0486a Simplify control flow. 2024-03-24 22:30:26 -04:00
Thomas Harte
6980fd760c Add further heavily-manual debugging aids. 2024-03-24 22:18:30 -04:00