[Coco] GBS-8200 RGB to VGA

[George Ramsower]

  So before I found out this was a bad choice, I ordered and paid for 
the cheap Chinese RGB to VGA converter board.
  While waiting for it, I began to learn that the H signal from the Coco 
is inverted and an inverter chip will be necessary to correct that...bummer.
  Then I read that another fellow was connecting a Coco 3 to an SCART to 
VGA converter board and he found the same problem with the inverted H&V 
signals from the Coco. He used the Video out and mixed them for the 
SCART to use and it worked for him.
  I tried something like this on the GBS8200 but I only put the video 
out from the Coco on the H line on the converter.
  It works beautifully in 32 and 40 column modes but the 80 mode does 
jump up and down a bit. Otherwise it is great looking.
  Tomorrow I'm going to play with it some more but, this looks really 
promising. I've simply connected the video out directly to the H input 
on that converter. Next I'm going to play with levels and resistors and 
caps, I might even play with the vertical line also but, I have a pretty 
good feeling this GBS 8200 is going to work just fine.

George R.