[SeaBIOS] [PATCH 5/6] sercon: split-output implementation
Gerd Hoffmann
kraxel at redhat.com
Wed Sep 13 14:41:19 CEST 2017
> On SeaVGABIOS, text writing now works in all graphic modes, though
> not
> all vgabios support that. The original bochs vgabios didn't support
> it in "direct" or "packed" modes, and I think it was broken for years
> in planar mode. So, it's rare for text writing to be seen in any
> mode
> above 7. (It's also rare for anything to go into cga mode today, but
> for ancient programs, it would not have been unusual to write out
> text
> in cga mode.)
Ah, ok. Didn't know that. So it actually makes sense to support all
modes <= 7 in sercon. 4+5 are 320x200, which should be 40x25 chars,
and 6 is 640x200 and therefore 80x25 chars (both using 8x8 font). I'll
go add 4+5+6 and simplify the mode number checks.
cheers,
Gerd
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