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11,191 Commits 8 Branches 121 Tags 496 MiB
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191 Commits

Author SHA1 Message Date
Thomas Harte
6329a1208a Adopt PIT-centric timing. 2023-11-21 22:02:24 -05:00
Thomas Harte
375a9f9ff5 Pull out the PIC, DMA. 2023-11-21 15:50:38 -05:00
Thomas Harte
a1e118a1ff Do some interrupt work. 2023-11-21 15:46:31 -05:00
Thomas Harte
83ca9b3af5 Hack in some MDA text logging. Boot seems to complete? 2023-11-21 11:37:36 -05:00
Thomas Harte
acdf32e820 Handle low/high switches. 2023-11-21 11:25:53 -05:00
Thomas Harte
931e6e7a56 Add, disable, logging detritus. 2023-11-21 11:19:47 -05:00
Thomas Harte
058080f6de Prove to my caveman self that no text is being written. 2023-11-20 23:11:27 -05:00
Thomas Harte
c4e9f75709 Edge towards but don't quite reach interrupt. 2023-11-20 22:52:20 -05:00
Thomas Harte
695282b838 PIT output now reaches the PIC. 2023-11-20 22:36:05 -05:00
Thomas Harte
f0e2ef5e28 Attempt to implement square-wave mode. 2023-11-20 22:19:18 -05:00
Thomas Harte
ee6012f6e9 Evict the PIT. 2023-11-20 19:00:16 -05:00
Thomas Harte
d3e90ce006 Capture some basics. 
BIOS now seems to get as far as expecting channel 0 to trigger an interrupt, which never comes.
 2023-11-20 15:36:52 -05:00
Thomas Harte
18ddc2c83a Route traffic. 2023-11-20 15:11:22 -05:00
Thomas Harte
abf0eead7a Add a functionless PIC. 2023-11-20 13:53:44 -05:00
Thomas Harte
a689f2b63e Relocate comment. 2023-11-20 12:22:30 -05:00
Thomas Harte
a3066fc040 Advance to the missing PIC. 2023-11-20 12:21:37 -05:00
Thomas Harte
7eed254de9 Bring an 8255 into the mix. 2023-11-20 12:13:42 -05:00
Thomas Harte
55f466f2fa Add enough of the DMA subsystem to trip over in PPI world. 2023-11-19 22:55:29 -05:00
Thomas Harte
119c83eb18 Fix field decoding. 2023-11-19 21:51:27 -05:00
Thomas Harte
4e077701c9 Exit without further modification upon latch. 2023-11-19 16:37:47 -05:00
Thomas Harte
a8f1c72f5c Take a caveman run at debugging. 2023-11-19 16:05:44 -05:00
Thomas Harte
05e93f0eb3 Implementing counting for a couple of PIT modes. 2023-11-19 15:52:32 -05:00
Thomas Harte
af885ccf08 Decode PIT mode writes. 2023-11-19 15:01:21 -05:00
Thomas Harte
2b69081fff Start sketching the PIT. 2023-11-19 07:15:30 -05:00
Thomas Harte
a91449555f Add link for future self. 2023-11-17 17:38:17 -05:00
Thomas Harte
afc0ca3f1b Add XT roadmap. 2023-11-17 17:35:11 -05:00
Thomas Harte
d202cfc2ca Add TODO. 2023-11-17 17:09:20 -05:00
Thomas Harte
ec2d878e3f End run around the template. 
I have yet to get any insight whatsoever on the reason for GCC's failure here and won't have access to a suitable test
machine for a while so all I have for testing is the arduous CI cycle.
 2023-11-17 17:02:46 -05:00
Thomas Harte
8af173c4bc Remove hopeful hit. 2023-11-16 15:48:27 -05:00
Thomas Harte
e1541543c3 Play hit and hope. 2023-11-16 15:40:47 -05:00
Thomas Harte
99e7de5a8b Colocate memory. 2023-11-16 15:24:35 -05:00
Thomas Harte
095359017f Log first unhandled port. 2023-11-16 13:02:35 -05:00
Thomas Harte
25f0a373f3 Don't sign-extend ports (!). 2023-11-16 11:17:12 -05:00
Thomas Harte
832e31f7e5 Add note to self. 2023-11-16 10:34:24 -05:00
Thomas Harte
164a7fe848 Log port IO. 2023-11-16 06:48:24 -05:00
Thomas Harte
62b6219763 Install BIOS, albeit in writeable storage. 2023-11-15 22:02:53 -05:00
Thomas Harte
2bc9dfbef9 Albeit with no BIOS present, execute. 2023-11-15 16:10:37 -05:00
Thomas Harte
3b84299a05 Edge closer to PCCompatible doing _something_. 2023-11-15 15:58:49 -05:00
Thomas Harte
6f48ffba16 Add enough of a ScanProducer to run. 2023-11-15 14:30:30 -05:00
Thomas Harte
af7069ac21 Include and fetch a BIOS. 2023-11-15 11:32:23 -05:00
Thomas Harte
e927fd00d8 Do just enough to include x86 code in the main build. 2023-11-15 11:01:28 -05:00