[Lancelot] VGA clk

[H. Peter Anvin]

Tommy Thorn wrote:
> 
> Well, 25MHz maps nicely to 680x480 VESA mode.  I don't know of any modes using
> 50MHz.   Finially, is the DAC even rated that high?  Why do you care?  You can
> just use the DCM to devide it down.
> 

If I remember right, the DAC is rated at 80 MHz, which is enough for 
1024x768.

Ultimately the clock frequency you need is a result of the resolution 
you want.

	-hpa