Thomas Harte
|
54352cb1cb
|
Stubs in a couple more registers.
PC now hits $0000. Likely a bug.
|
2020-11-09 21:54:25 -05:00 |
|
Thomas Harte
|
7e106c6add
|
Attempts to stub in read from microcontroller, and extends command 0x06.
A complete guess on the latter, as if you didn't know.
|
2020-11-09 21:20:53 -05:00 |
|
Thomas Harte
|
0ae49b356a
|
Seems to do enough padding out to get me to my second failing ADB command.
That's better than failing at the first.
|
2020-11-09 19:05:48 -05:00 |
|
Thomas Harte
|
32374444ba
|
Fixes text output window.
|
2020-11-08 17:04:04 -05:00 |
|
Thomas Harte
|
287bfeb924
|
Hacks in 40-column text.
Hot gossip: my IIgs is reporting a system error. A clue!
|
2020-11-08 17:01:23 -05:00 |
|
Thomas Harte
|
81c38c7200
|
Per the IIgs tech note, this value works the other way around.
|
2020-11-07 23:15:07 -05:00 |
|
Thomas Harte
|
3bb3d8c5c1
|
Adds text colour register.
Oddly this isn't currently being set. So probably another latent fault elsewhere.
|
2020-11-07 23:14:50 -05:00 |
|
Thomas Harte
|
b57a2bfec9
|
Completes logic for pixel framing. Well, mostly; this doesn't yet allow for auxiliary-using II modes being off to the left.
The perceived effect though is that a frame appears and then freezes. So a clocking issue may still be afoot.
|
2020-11-07 22:23:48 -05:00 |
|
Thomas Harte
|
a51f4122f0
|
Attempts to respect border colour.
Though for now my display is just a sea of purple.
|
2020-11-07 22:03:05 -05:00 |
|
Thomas Harte
|
35ba5fc894
|
Resolves video timing issues.
|
2020-11-07 21:28:08 -05:00 |
|
Thomas Harte
|
228d901253
|
Attempts to stabilise image horizontally.
|
2020-11-07 21:10:05 -05:00 |
|
Thomas Harte
|
d37ba62343
|
Makes first, faltering steps towards video display.
|
2020-11-07 20:42:34 -05:00 |
|
Thomas Harte
|
699fb0aa4b
|
Switches to just-in-time video, for easy access to a clock divider.
|
2020-11-07 19:40:26 -05:00 |
|
Thomas Harte
|
613d4b7c8b
|
Migrates character ROM handling; supplies one for the IIgs.
|
2020-11-07 17:45:03 -05:00 |
|
Thomas Harte
|
6b29e1f598
|
Corrects accesses to switch values.
|
2020-11-05 21:25:06 -05:00 |
|
Thomas Harte
|
6c9edbb7a2
|
Resolves specious interrupts.dic
|
2020-11-05 20:51:00 -05:00 |
|
Thomas Harte
|
282d0f1ebb
|
For debugging, adds a dump of anything in the [presumably] text buffer.
Nothing is there.
|
2020-11-05 18:17:21 -05:00 |
|
Thomas Harte
|
f466cbadec
|
Attempts to do just enough with video to get a functioning vertical blank query.
|
2020-11-05 17:56:20 -05:00 |
|
Thomas Harte
|
46ee98639e
|
Stubs in $c010.
Also reduces memory map logging.
|
2020-11-04 21:35:11 -05:00 |
|
Thomas Harte
|
cc6c0d535c
|
Stubs in some of the sound GLU registers.
|
2020-11-04 21:29:44 -05:00 |
|
Thomas Harte
|
78b57e73d5
|
Hacks in a lying vertical blank value.
|
2020-11-04 21:18:27 -05:00 |
|
Thomas Harte
|
9e2a6526d1
|
Corrects interpretation of bit 3 of the state register.
And attempts to be a bit more careful with the language card in general.
|
2020-11-04 21:15:10 -05:00 |
|
Thomas Harte
|
d3c7253981
|
Shifts size-limiting of X and Y to transitions and mutations, away from reads.
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
|
0178aaee2b
|
Attempts retroactively to enforce the rule that 8-bit index modes => no top byte.
(Rather than a preserved but ignored top byte)
|
2020-11-02 18:55:28 -05:00 |
|
Thomas Harte
|
53f60f7c87
|
Adds some notes for a pending ADB implementation.
|
2020-11-01 14:49:04 -05:00 |
|
Thomas Harte
|
2da71acefd
|
Stubs in the ADB GLU.
|
2020-10-31 21:00:15 -04:00 |
|
Thomas Harte
|
45f5896b76
|
Stubs video switches into the IIgs.
|
2020-10-31 20:39:32 -04:00 |
|
Thomas Harte
|
531a3bb7e6
|
Ensures RAM is zero-initialised, for now, to aid in repeatable bug finding.
|
2020-10-31 20:03:23 -04:00 |
|
Thomas Harte
|
1b28d929e4
|
Factors out the Apple II/IIe video switches and mode selection logic.
|
2020-10-31 20:02:50 -04:00 |
|
Thomas Harte
|
e4459b6256
|
Adds power-on bit to speed register.
|
2020-10-30 21:50:39 -04:00 |
|
Thomas Harte
|
2be817a6a1
|
Maps in "the interrupt ROM addresses".
|
2020-10-30 21:42:43 -04:00 |
|
Thomas Harte
|
a833bb892b
|
Increases logging substantially.
|
2020-10-30 20:11:55 -04:00 |
|
Thomas Harte
|
0d562699a2
|
Ensures unmapped regions are really unmapped.
|
2020-10-29 22:18:01 -04:00 |
|
Thomas Harte
|
034056d0cd
|
Adds full 8-bit clock addressing; stubs clock into the IIgs.
|
2020-10-29 21:38:36 -04:00 |
|
Thomas Harte
|
1249fb598b
|
Factors Apple's RTC out of the Macintosh.
|
2020-10-29 21:03:02 -04:00 |
|
Thomas Harte
|
5a8b8478d2
|
Corrects unhandled IO assert.
The IIgs proper is actually waiting on communication with the RTC.
|
2020-10-28 22:14:02 -04:00 |
|
Thomas Harte
|
6c54699c44
|
Connects up an SCC.
Thereby putting my IIgs into its first perpetual loop. Trying to do something with the SCC I haven't implemented yet perhaps?
|
2020-10-28 22:07:34 -04:00 |
|
Thomas Harte
|
94a6da6b7d
|
Exposes much of the auxiliary and language card stuff to the IIgs bus.
|
2020-10-28 21:58:20 -04:00 |
|
Thomas Harte
|
885fae1534
|
Stubs in a speed register.
|
2020-10-28 21:23:45 -04:00 |
|
Thomas Harte
|
1e4679ae14
|
Corrects JSL and RTL.
|
2020-10-28 17:25:40 -04:00 |
|
Thomas Harte
|
267dd59a59
|
Gets as far as seemingly yet another memory-map setting.
Tomorrow, maybe?
|
2020-10-27 22:31:58 -04:00 |
|
Thomas Harte
|
0a91ac5af5
|
Adds some extra notes, starts getting into trying to run the IIgs.
|
2020-10-27 22:09:45 -04:00 |
|
Thomas Harte
|
ad93ad6018
|
Attempts to finish off shadowing.
|
2020-10-27 22:05:04 -04:00 |
|
Thomas Harte
|
0c700094ea
|
Goes branchless on shadowing.
|
2020-10-27 21:56:03 -04:00 |
|
Thomas Harte
|
20631a157b
|
Contorts somewhat in pursuit of branchless shadowing regardless of page and without extra storage.
|
2020-10-27 21:37:39 -04:00 |
|
Thomas Harte
|
e44f95a882
|
Takes a first, faltering shot at shadowing.
|
2020-10-27 19:49:47 -04:00 |
|
Thomas Harte
|
31cd45f8b5
|
Takes a run at set_card_paging and simplifies method of shadowing.
|
2020-10-27 19:33:47 -04:00 |
|
Thomas Harte
|
74f9f6ad3b
|
Tests and corrects ROM access beyond bank $00.
|
2020-10-27 19:02:15 -04:00 |
|
Thomas Harte
|
1dfdb51e61
|
Hits a few other easy cases.
Still to do: card paging, and finding out which banks that applies to, and shadowing. So: everything with flags.
|
2020-10-26 21:49:47 -04:00 |
|
Thomas Harte
|
18832dc19d
|
Attempts to expand the language card stuff to all affected pages.
|
2020-10-26 20:30:41 -04:00 |
|