This commit is contained in:
Jonathan Campbell
2018-07-06 01:19:47 -07:00
parent 3a30a8b1c7
commit d58c8dc9ec

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@@ -57,6 +57,13 @@ Findings:
- Noted, according to VGA register snapshots, is that the BIOS sets MONO=0 for all modes except
mode 7 (80x25 mono text) and mode 15 (640x350 2-color graphics) where MONO=1.
- The DAC mask appears to apply after the Color Select register is applied to bits 7-6.
It also applies after application of Color Select applied to bits 5-4.
- Color Select bits 7-6 / 5-4 do not apply in 256-color mode (ignored). The bit to apply
bits 5-4 from Color Select (P54S) is ignored in 256-color mode. 256-color mode will
not apply any bits from Color Select.
Other ideas to follow: