Thomas Harte
bde975a3b9
Possibly mights the tiniest bit of headway with 'the IWM'.
...
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.
...
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.
...
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.
...
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.
...
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.
...
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.
...
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.
...
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.
...
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.
...
I no longer think that logic is correct.
2019-05-07 17:16:22 -04:00
Thomas Harte
949c848815
Broadens address decoding.
...
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.
...
... 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.
...
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.
...
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.
...
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.
...
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
