Andrew Makousky
02dcdadf15
Correction: Macintosh does not invert video signal.
2021-04-03 17:29:37 -05:00
Andrew Makousky
20c56b0eda
Revisited PAL logic equations, now looking really great!
2021-04-03 16:44:32 -05:00
Andrew Makousky
7669cfec2e
Add CAS PAL.
2020-12-31 09:23:08 -06:00
Andrew Makousky
198bf1fac1
ASG on mac128pal.v, documentation links.
2020-12-30 17:02:42 -06:00
Andrew Makousky
7be998a7e5
mac128k PAL equations looking pretty good now.
2020-12-27 22:25:03 -06:00
Andrew Makousky
bf64640d5a
Fix some of the mac128pal problems.
2020-12-27 18:43:37 -06:00
Andrew Makousky
92edcf0931
Transition to continuous assign, revealed equation problems.
...
But otherwise with problems fixed, simulation should be a lot faster.
2020-12-27 15:52:23 -06:00
Andrew Makousky
56dd957402
Mac 128k PAL signals mostly working, hooray!
...
Also start working on BBU video timing signals, and documentation
improvements.
2020-12-27 09:19:35 -06:00
Andrew Makousky
306024838b
Finally figured out S5 is a pull-up resistor.
2020-12-24 11:23:08 -06:00
Andrew Makousky
fe87fea02c
Fixes to mac128k PAL simulation issues, more documentation.
2020-11-28 16:36:09 -06:00
Andrew Makousky
c490406c81
BBU: More analysis and insight.
2020-11-25 17:18:41 -06:00
Andrew Makousky
602a9b564d
BBU: Add DRAM sim, almost done with mac128k.
2020-11-25 06:04:07 -06:00
Andrew Makousky
6678c4b2ab
Commit BBU work-in-progress.
...
For comparative simulation, I'm also assembling the logic of the earlier
Macintosh 128K, and possibly also Macintosh Plus, in Verilog, and
planning on doing MLB board-level simulations too.
2020-11-25 01:05:48 -06:00