Re: VDC bitmap with 8x2 cells

From: Nicolas Welte (
Date: 2002-02-01 21:56:02

MagerValp wrote:
> I'm trying to set up the VDC screen to a 640x200 bitmap with 8x2 pixel
> attribute cells. Char height is set to two, vertical display registers
> are quadrupled. I get a screen, but the two rightmost columns display
> flickering garbage. Changing the number of characters per line to 78
> or less makes the bug go away. Does anyone know of a workaround?

Can you post your register settings? The only time I had to decrease the
characters per line was when I actually reduced the horizontal total register
to make an EGA like 21kHz screen mode. BTW, switching off attributes helps a
lot, but I guess this is exactly what you do not want ;-)


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