Thanks Tony, that should be enough info for me to see if I can get the
card to work. So the card will take both 27C256 and 27C512. I have
enough 27C256 on hand to stuff the board with those.
What is the HP marked IC 1820-2311? Is that the address comparator?
I will have to create the EPROM tools disk and then take a look at
what info and tools are there.
-Glen