Date   : Mon, 11 Mar 2002 04:43:32 -0000
From   : "Richard Gellman" <r.gellman@...>
Subject: A couple of CRTC/Timing problems

I have a couple of video emulation problems related to FireTrack that I'd
like help with if anyone can help... :)

Firstly, I've rennovated my vertical alignment code, so the screen starts at
a point that can no longer change halfway down the screen (previously you
could reprogram the CRTC in mid-frame, and this would cause the screen start
point to move, causing judder), and this has almost resolved the problem but
it still jiggles by 1 pixel scanline, which may have something to do with:

Secondly, I can't seem to get rid of that flipping "tidemark", you know that
one scanline at the point where mode/pallette changes occur that always
flickers... I've tried adjusting VIA timings, VSync delays.. nothing seems
to be making it go away...

Any help is greatly appreciated.. :))

-- Richard Gellman

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