[Lancelot] VGA clk
H. Peter Anvin
hpa at zytor.com
Wed Feb 23 10:49:54 PST 2005
Tommy Thorn wrote:
>
> All that said, Lancelot still holds mysteries to me. The blanking
> facility of the DAC didn't work for me; I just got a purple (?) frame
> around the screen. I could only get color space configuration 0 to work
> usefully. Finally, pardon me for not checking the schematics, but are
> only the RGB values delayed by 8 cycles? If all signal through the DAC
> see this delay then that would explain why I could see a difference.
>
I believe that is correct. In particular, the sync signals DO NOT
change (that's why you end up having a shift at all... if they all
shifted, you wouldn't notice.)
-hpa
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