Just picked up a Wei-Ya ACV-011 CGA --> VGA
converter board with the
intention of using it with a Commodore 128 (and possibly Amiga). It
doesn't have a true TTL input, but there is a C128 enthusiast out there
who published a small circuit to do the RGBI --> CGA interface.
Err, what is a 'CGA Interface' if not a TTL-level RGBI one?
-tony