well, the output connectors "seem" to be SRGB composite connectors [i'd say they where buggered up bnc attempts???] and two HD15's???
Those aren't HD15s... Those are DB9s.
Surely the 4 RCA connectors are RED, GREEN, BLUE, SYNC. This card does some video processing/output.
Those 2 DB9 connectors, though. 1 male, 1 female. That doesn't make this any more clear, though. They might be a communication of some kind. Perhaps these cards originally had a breakout box of some kind? Of course they still could be video, as I have an early NEC multisync monitor that uses a DB9 instead of an HD15.
And look at all those ZIP chips on those cards! A row the full length of the Zorro card.
Can you do two more things?
Those "tall" chips that look like they're standing up along the top of the card... What is the model number on them, and how many are there? They're ZIP memory modules, and knowing that piece of information, we can see how much RAM is on that card. That may give some hints as to what it does. (edit: after looking at the pic again, those maybe aren't ZIPs at the top.... Anyhow, what's the writing on them?)
Also, what's the model number on that large ceramic chip in the bottom-center of picture 2?
At this stage, I'd go with vpcs's explaination. These two cards may have originally been dedicated hardware for use in a simulator of some kind.
