On 4 Mar 2008, at 15:59, Timothy Normand Miller wrote:
Exactly. Howard's the one who knows what to do here, but he's a
strapped resource, and there's tons the rest of us can do in the mean
time.
Ok. I just encountered it while trying to figure out how the video
controller was fitting together.
I guess we could do something like, run at 130 MHz. Then we get
640x480 - divide by 5.2 (count to 5, every fifth time count to 6?)
800x600 - divide by 3.25 (count to 3, every fourth time count to 4?)
1024x768 - divide by 2
That's interesting, but it wouldn't leave you with a 50/50 duty cycle.
This could be a problem for the DVI transmitters, which are DDR.
I bet the screen doesn't like it either that pixels aren't coming in
at a constant rate, which is what I meant with 'odd'. I just don't
know how else to do division and get somewhat accurate new clocks.
Correcting the clock like that all the time is bound to give odd
display results. So I don't know how to do it, but a divider sounds
imho impossible.
I'm going to get in touch with Howard and find out how he got it to
work.
Ok, great. :)
Cheers,
Michael
www.projectvga.org
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