Thanks for your input all I will give some of those drivers ago shortly In terms of doing development I wouldn't know where to start, I am not really familiar with x86 assembly programming for dos use. I would assume something like TurboC and write C wrapped with some assembly not sure

Recently acquired a COLORGRAPHIC COMMUNICATIONS CORPORATION SUPER DUAL VGA 16bit Isa Card Dual Vga Card.jpeg Here are the full tech specs: http://arvutimuuseum.ee/th99/v/C-D/50144.htm I suspect these are early CAD based cards. On boot you get standard does output on one of the connections on the …