[Coco] RGB2VGA Bitstream - 2nd Attempt at getting an answer...

Steven Hirsch snhirsch at gmail.com
Mon Oct 12 13:06:50 EDT 2015


Can anyone using an rgb2vga video adapter please tell me which version of 
bitstream file you are running and where you obtained it from?

Ed?  What are you programming them with when you ship the DE0-Nano as part 
of the deal?

I'm asking because I'm observing poor video quality with the HEAD revision 
from Luis's SVN repository (r100).  I've tried two different Coco 3s and 
it looks awful with both of them.  By doing a binary search over the 
100-odd versions available, I have found that r52 (almost a year old) is 
completely artifact free.

Also, the simulated scan lines in the newest version have so little 
contrast that they're almost invisible.  Is there a simple change in the 
code to reduce the intensity of the "off" lines?  They look great in r52, 
FWIW.

Steve

p.s. - Has anyone heard from Luis in the past few months?  I know he had a 
cross-continent move, but was hoping to see him on the list by now.


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