VGA timing

Dec 23, 2004 1 Replies
A

Hi there.



I'm new to PLD devices, and thought that building a VGA controller would be fairly simple. I can't for the life of me get the damn thing to work though, more specifically I can't get the monitor to sync. I've disconnceted Green and Red and have tied Blue high. I'm trying to spit out 640x480 at 52Hz.



I'm hoping that I've done something really simple wrong with the timings, so I've uploaded the output of a simulation - can anyone have a look at it and tell me if I have? Thanks..



Simulation output is at http://82.147.17.182/vga.vwf . Thanks.


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snipped-for-privacy@gmail.com (Alan Randomdude) wrote in news: snipped-for-privacy@posting.google.com:

Here's a document that we wrote on a VGA generator. Maybe it will help you get your sync timing correct.

formatting link

---------------------------------------------------------------- Dave Van den Bout XESS Corp. PO Box 33091 Raleigh NC 27636 Phn: (919) 363-4695 Fax: (801) 749-6501 devb@xess.com http://www.xess.com
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