I am looking for further documentation for the VGA connections on the ML40x boards.
ug82 says that there is 50MHz chips on the ML401s and 140MHz chips on the ML402s and ML403s. The ML403's FX12 has reduced pins and only five bits per color. I suppose the best VGA would therefore come from the ML402s.
From the schematic I see that the upper five bits per color are attached to Bank6 and the lower three bits per color are attached to Bank9. There is a difference in drive voltage between the two banks, does the VGA chip care? Is there anyway to compensate with different drive currents.
I have a few UCF files with different stories. What does contingent mean in a UCF file?
Is there any other documents other than the Xilinx schematics and the VGA manufacturers data sheets?
Brad Smallridge aivision.com