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Author SHA1 Message Date
Thomas Harte
c5745f71f6 Reduce repetition, map dark yellow to brown. 2023-12-07 13:11:20 -05:00
Thomas Harte
48d1fa7eab
Merge pull request #1255 from TomHarte/CGAClock 
Revise CGA clock rate downward.
 2023-12-07 12:28:44 -05:00
Thomas Harte
71069bef0f Correct get_scaled_scan_status. 2023-12-07 12:18:03 -05:00
Thomas Harte
8608f0f89d Adjust CGA clocking down by 1/7th. 2023-12-07 12:05:15 -05:00
Thomas Harte
d94791a82d
Merge pull request #1254 from TomHarte/BordersAplenty 
Unify repeated setup/execution of output_level.
 2023-12-07 11:45:42 -05:00
Thomas Harte
017fd84f36 Also use output level for CRAM dots. 2023-12-07 11:05:10 -05:00
Thomas Harte
fc63fcb751 Unify usages of output_level for border. 2023-12-07 11:04:18 -05:00
Thomas Harte
eb4a8bfef9
Merge pull request #1253 from TomHarte/RTC 
Add some small portion of the AT real-time clock.
 2023-12-07 10:52:45 -05:00
Thomas Harte
ad78a03300 Default to CGA40 if starting a new composite PC. 2023-12-07 10:14:06 -05:00
Thomas Harte
0f22ee5de4 Add TODO. 2023-12-07 10:08:43 -05:00
Thomas Harte
83cfacc0a5 Update TODOs. 2023-12-07 10:03:52 -05:00
Thomas Harte
ef0c3549d2 Attempt but fail to indicate PM. 2023-12-06 23:28:16 -05:00
Thomas Harte
e3119a4904 Hack in read-only versions of the main registers. 2023-12-06 23:25:34 -05:00
Thomas Harte
5fde3b8d5d Wire up a stub RTC plus appropriate option ROM. 2023-12-06 22:56:09 -05:00
Thomas Harte
d696c15be5
Merge pull request #1252 from TomHarte/CGAAddresses 
Revise guess as to CGA address wrapping.
 2023-12-06 22:32:54 -05:00
Thomas Harte
b385e6edad Revise guess as to address wrapping. 2023-12-06 22:03:24 -05:00
Thomas Harte
327dc51ece
Merge pull request #1250 from TomHarte/CGATarget 
Add CGA emulation.
 2023-12-06 16:23:10 -05:00
Thomas Harte
a44ffa769b
Merge pull request #1251 from TomHarte/PCScreenshots 
Add PC screenshots, mention.
 2023-12-06 16:21:51 -05:00
Thomas Harte
87438a3019 Add PC screenshots, mention. 2023-12-06 16:20:31 -05:00
Thomas Harte
1f976b8ccb Complete loop for macOS display selection. 2023-12-06 14:49:34 -05:00
Thomas Harte
8645a4b7b1 Walk further towards user display configuration. 2023-12-06 14:44:59 -05:00
Thomas Harte
ff000a5792 Support remainder of colour control. 2023-12-06 14:38:43 -05:00
Thomas Harte
1c7f8841f4 Avoid potential lengthy startup; work towards display option. 2023-12-06 13:55:41 -05:00
Thomas Harte
fd298ffbe9 Remove dead TODO. 2023-12-06 13:15:36 -05:00
Thomas Harte
987a5dbfbf Honour monochrome flag. 2023-12-06 13:15:17 -05:00
Thomas Harte
0bb74f405f Ensure lines are in-phase with the NTSC colour subcarrier. 2023-12-06 13:12:58 -05:00
Thomas Harte
1aa168054e Add a phoney colour burst. 2023-12-06 13:10:28 -05:00
Thomas Harte
6d7c6de32f Fix flush_pixels for 640px mode. 2023-12-06 11:50:16 -05:00
Thomas Harte
d3021e8c90 Attempt _something_ for 640px mode. 2023-12-06 11:42:35 -05:00
Thomas Harte
6adaf89934 Make first attempt at palette support. 2023-12-06 11:19:04 -05:00
Thomas Harte
bf49f745bf Attempt to distinguish clocks. 2023-12-06 10:41:20 -05:00
Thomas Harte
c5aa3fc75c Start mangling towards pixel output. 2023-12-06 10:30:30 -05:00
Thomas Harte
d88c7ae148 Switch to CGA as default. 2023-12-06 09:59:21 -05:00
Thomas Harte
f455f07ba2 Support half-clocked mode. 2023-12-06 09:59:14 -05:00
Thomas Harte
561e50a24d Implement most of CGA text mode. 2023-12-06 09:42:22 -05:00
Thomas Harte
2216fc37a1 Add CGA font. 2023-12-06 09:34:25 -05:00
Thomas Harte
23bdf0c2a2 Add CGA font references. 2023-12-06 09:34:04 -05:00
Thomas Harte
24eaf95e9d Limit to eight pixels per fetch, to produce stable video. 2023-12-06 09:13:47 -05:00
Thomas Harte
e43f960934 Produce incorrect output from proper clock; capture mode. 2023-12-05 23:01:08 -05:00
Thomas Harte
fdd599e71a Unify CRTC routing. 2023-12-05 23:00:43 -05:00
Thomas Harte
84ee683ad3 Remove redundant, false comment. 2023-12-05 23:00:21 -05:00
Thomas Harte
b2b05b590f Clone the MDA class to CGA. 2023-12-05 22:37:33 -05:00
Thomas Harte
c5ec9ae171 Adjust MDA clock; it's slightly slower than my guess. 2023-12-05 22:31:37 -05:00
Thomas Harte
5576588c2d Fix drive enables, go back to FF for non-existent ports. 2023-12-05 22:02:41 -05:00
Thomas Harte
084efdeb2d Resolve further type conversion warnings. 2023-12-05 16:54:11 -05:00
Thomas Harte
fd8afb6668 Devolve memory location and font ROM decision. 2023-12-05 16:46:39 -05:00
Thomas Harte
dd04909d58 Resolve some further warnings. 2023-12-05 16:43:55 -05:00
Thomas Harte
736a3841ce Wire up adaptor selection. 2023-12-05 16:42:55 -05:00
Thomas Harte
bdf9c4765b Loosen the assumption of MDA. 2023-12-05 16:38:09 -05:00
Thomas Harte
6659a1dec5 Exit on EOP. 2023-12-05 15:37:25 -05:00