Thomas Harte
52e96e3d2a
Documents and extends the Video interface.
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With the intention of returning it soon to JIT execution.
2019-07-08 22:28:05 -04:00
Thomas Harte
1a9aa60bf7
Ensures no compiler will think this can exit without returning.
2019-07-08 18:13:23 -04:00
Thomas Harte
793c2df7ee
Fixes keypad keys.
2019-07-08 16:38:06 -04:00
Thomas Harte
28de629c08
Fixes the 6522 sufficiently to fix keyboard input.
2019-07-08 15:29:34 -04:00
Thomas Harte
d7329c1bdd
Experiments with a timeout on keyboard interactions.
2019-07-07 14:13:55 -04:00
Thomas Harte
96c0253ee2
Fixes mouse input when a button is pressed; attempts keyboard input.
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I think the VIA is somehow sending spurious commands.
2019-07-02 21:14:33 -04:00
Thomas Harte
191a7a9386
Reintroduces an empty second drive.
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This prevents the uninitialised disk error. Which is a clue.
2019-07-02 16:59:00 -04:00
Thomas Harte
fffe6ed2df
Chops the Macintosh down to a single drive to aid in development.
2019-07-02 13:59:30 -04:00
Thomas Harte
6c588a1510
Makes some further random swings at tracking the startup procedure.
2019-06-28 13:03:47 -04:00
Thomas Harte
d81053ea38
Invents some additional PEA tests, and further fixes PEA.
2019-06-27 17:59:03 -04:00
Thomas Harte
506276a2bd
Corrected: use format tag as intended.
2019-06-18 14:04:28 -04:00
Thomas Harte
00c32e4b59
Further miscellaneous changes to debug logging. All temporary.
2019-06-18 10:34:31 -04:00
Thomas Harte
877b46d2c1
Advances IWM/drive emulation very close to the point of 'Welcome to Macintosh'.
2019-06-15 16:08:54 -04:00
Thomas Harte
bde975a3b9
Possibly mights the tiniest bit of headway with 'the IWM'.
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I'm now pretty sure that my 3.5" drive, which for now is implemented in the IWM (yuck) is just responding to queries incorrectly.
2019-06-13 22:38:09 -04:00
Thomas Harte
f6f9024631
Corrects Macintosh aspect ratio (and framing).
2019-06-13 18:41:38 -04:00
Thomas Harte
5630141ad7
Ensures randomised memory contents at startup.
2019-06-13 13:35:16 -04:00
Thomas Harte
d6150645c0
By hook or by crook, mouse input now works.
2019-06-12 22:19:25 -04:00
Thomas Harte
ccd2cb44a2
Fills in enough of the SCC to allow completion of the Macintosh side of that relationship.
2019-06-12 17:51:50 -04:00
Thomas Harte
c8066b01b6
Restores attempt at proper audio behaviour.
2019-06-11 19:53:22 -04:00
Thomas Harte
ebd59f4dd3
Performs the trivial part of wiring up the Macintosh mouse.
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SCC still to go.
2019-06-11 19:52:37 -04:00
Thomas Harte
109953ef49
Ensures proper routing of mouse events from Cocoa.
2019-06-11 18:41:41 -04:00
Thomas Harte
124c7bcbb0
Makes the Macintosh a mouse machine, and makes mouse machines detectable.
2019-06-11 18:21:56 -04:00
Thomas Harte
9230969f43
Corrects enough of the 6522 and Keyboard to get an initial command seemingly working.
2019-06-10 09:28:27 -04:00
Thomas Harte
697e094a4e
Sketches out the absolute basics of an SCC interface.
2019-06-08 18:47:11 -04:00
Thomas Harte
7591906777
Numerous IWM fixes: the machine now seems to be trying to measure the tachometer.
2019-06-06 18:32:11 -04:00
Thomas Harte
a413ae11cb
Makes some sort of first attempt at having the IWM read.
2019-06-04 22:13:00 -04:00
Thomas Harte
833258f3d7
Sets things up to allow variable rotation rates, and especially Sony 800kb-style self-selecting rates.
2019-06-04 21:41:54 -04:00
Thomas Harte
661fe1e649
Disables logging, for now.
2019-06-03 15:57:53 -04:00
Thomas Harte
85298319fa
Expands towards supporting multiple Macintosh models.
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To provide another variable to help with bug isolation.
2019-06-03 14:50:36 -04:00
Thomas Harte
881feb1bd3
Adds preliminary parsing of the Disk Copy 4.2 format.
2019-06-02 13:39:25 -04:00
Thomas Harte
3e9fa63799
Adds a receiver for drive-motor control bytes.
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My new belief is that I'm either reading the buffer from the wrong place, or the 68000 isn't filling it for some reason.
2019-06-01 19:31:32 -04:00
Thomas Harte
983407896c
Ensures consistent audio pipeline.
2019-06-01 17:29:57 -04:00
Thomas Harte
5c08bb810e
In theory provides a full implementation of audio.
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Albeit seemingly ineffective.
2019-06-01 15:44:29 -04:00
Thomas Harte
17635da812
Pushes Mac audio further towards being able to function.
2019-06-01 15:18:27 -04:00
Thomas Harte
6d985866ee
All proper inputs are now provided to the audio generator.
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Hopefully. The next job is to generate audio. If that sounds correct, then the disk motor speed question can be tackled.
2019-06-01 15:03:15 -04:00
Thomas Harte
723137c0d4
With some time additions to the 6522, starts wiring in Macintosh audio.
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The audio buffer is also the disk motor buffer, so this is preparatory to further disk work.
2019-06-01 14:39:40 -04:00
Thomas Harte
4632be4fe5
Wires up the final IWM signal, SEL, preparatory to an implementation.
2019-05-30 12:08:00 -04:00
Thomas Harte
0848fc7e03
Ensures the Mac uses auto vectored interrupts.
2019-05-28 16:24:41 -04:00
Thomas Harte
5e2496d59c
Simplifies and corrects MOVE logic.
2019-05-28 15:17:03 -04:00
Thomas Harte
1d3dde32f2
Ensures final byte of data can be accessed.
2019-05-09 07:24:26 -04:00
Thomas Harte
41740fb45e
Implements video position feedback.
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At a substantial performance cost for now, but I'll worry about that once things are working.
2019-05-08 16:54:19 -04:00
Thomas Harte
0ad88508f7
Removes ROM mirroring above $600000.
2019-05-08 15:07:03 -04:00
Thomas Harte
8b72043f33
Ensures no uninitialised variables.
2019-05-08 14:54:54 -04:00
Thomas Harte
f0f9722ca6
Takes a first crack at the keyboard's serial protocol.
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Albeit that without a working shift register in the VIA, this shouldn't really work yet.
2019-05-08 14:20:28 -04:00
Thomas Harte
b5ef88902b
Edges further towards a functioning keyboard.
2019-05-08 13:58:52 -04:00
Thomas Harte
7b466e6d0a
Begins work on a functioning keyboard.
2019-05-08 12:34:26 -04:00
Thomas Harte
7e6d4f5a3e
Adds emulation of the real-time clock.
2019-05-08 00:12:19 -04:00
Thomas Harte
ce099a297a
Eliminates RAM writes in ROM area.
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I no longer think that logic is correct.
2019-05-07 17:16:22 -04:00
Thomas Harte
949c848815
Broadens address decoding.
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To no obvious change in output.
2019-05-06 22:57:29 -04:00
Thomas Harte
9bf9b9ea8c
Ensures unmapped peripherals return a consistent value.
2019-05-06 21:32:10 -04:00
Thomas Harte
a131d39451
I now believe only the 6522 is on the synchronous bus.
2019-05-06 14:10:13 -04:00
Thomas Harte
b540f58457
Sets a more appropriate display type.
2019-05-05 23:22:05 -04:00
Thomas Harte
4f5a38b5c5
Adds support for the alternate video buffer.
2019-05-05 23:05:24 -04:00
Thomas Harte
cefc3af08b
Corrects RAM read decoding when the ROM overlay is enabled.
2019-05-05 22:48:40 -04:00
Thomas Harte
96facc103a
Adds an IWM shim and corrects graphics output.
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... now that there is some.
2019-05-05 21:55:34 -04:00
Thomas Harte
407bbfb379
Pretending the Disk II is an IWM doesn't seem to achieve much.
2019-05-05 18:12:25 -04:00
Thomas Harte
a99ebda513
Takes a first shot at (inverted) Mac video output.
2019-05-04 22:27:58 -04:00
Thomas Harte
537b604fc9
It looks like writes should always go to RAM.
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Now I see the screen buffer being filled with `0xffff`s, along with what is probably disk motor control data.
2019-05-04 17:29:30 -04:00
Thomas Harte
98bc570bf7
Adds further boilerplate around VIA and IWM decoding.
2019-05-04 17:12:26 -04:00
Thomas Harte
181b77c490
Adds decoding of IWM accesses and respect for the ROM overlay bit.
2019-05-04 16:38:01 -04:00
Thomas Harte
bc9eb82e6f
Adds in VIA access decoding, and a note to self on video.
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The Mac now proceeds to try to talk to the IWM.
2019-05-04 14:23:37 -04:00
Thomas Harte
29fc024ecd
Starts negotiating the Macintosh memory map.
2019-05-04 12:33:27 -04:00
Thomas Harte
c1695d0910
Adds various notes to self.
2019-05-03 23:55:28 -04:00
Thomas Harte
6d6a4e79c9
Adds the absolute basics to include a 6522 in the Macintosh.
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Not yet wired to anything.
2019-05-03 23:40:22 -04:00
Thomas Harte
68392ce6f5
Adds enough of a concept of Mac video to get a properly initialised display.
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Completely empty at present, naturally. Also this is the very first time I've run my 68000 at live speed. From just one data point, it's not terrible. Phew!
2019-05-03 23:25:42 -04:00
Thomas Harte
6873f62ad8
Ensures that the Mac now retains its ROM properly.
2019-05-03 22:39:09 -04:00
Thomas Harte
5f385e15f6
Adds the bare bones necessary to be able to create a Macintosh from File -> New... .
2019-05-03 22:16:07 -04:00
Thomas Harte
8c5d37b6ee
Refactors the AppleII into a sub-namespace to make room for other Apple machines.
2019-05-03 18:14:10 -04:00
