🚀 go-pugleaf

Hi! My father recently bought an old PC and printer for $250 and I
took it apart to see what we had. I could use some help identifying
these cards, and an info concerning the motherboard (like suggestions
on how to improve it) would be most appreciated.

This is an original IBM XT, I believe. There's a little plate on the
front that says IBM 5160. (Anyone know what that number means?). It
was surplus when Pan American went bust, so it's got old and new parts
mixed in together.

Motherboard is labeled "64-256 KB System Board" and has 4 banks of 9
memory chips (TI 4164 - 20NL). There is a coprocessor slot for an
8087, anyone know where I can get one cheap? I saw one for $89, but
that seems pretty pricy considering how out of date this chip is! 

Card 1: is labeled Color Graphics, which I guess is a giveaway as to
what it is. It has a composite video (RCA) jack and a DB-9. The card
is labeled IBM 1981 8440C NM. I assume this is a CGA card. How do I
find out how much memory it has? Or did CGAs have any memory on board?


Card 2: Is labeled Quadram Quadcard, with a copywrite notice 1984.
There's a bank of chips which I assume are memory (the chips are OKI
M3764A-15, 16 pins, in a 6 x 9 array). There's a male DB-25 connector
on the back. What can be connected to this? There's also an empty
socket on board which takes a 16 pin chip. The socket is labeled
"printer", there's also some jumpers and a bank of dip switches. Can
anyone tell me what this card is?

Card 3: Is labeled "Everex Systems Inc  EV231C PWA-00219-00" It has a
females DB-25 and a female DB-9. I have no idea what this card is
either, except that it's where the printer is plugged in. I was hoping
the db-9 was a serial port, but when I pluged a modem in there I got a
steady tone from the modem, not at all usual. So what could this card
be?

Card 4: is a floppy drive controller card, not labeled in any way I
could see. But it has a 37 pin female DB type connector. Any idea what
that could be for?

That's it, I guess. if anyone has any old documentation for any of
these cards, I'd be willing to pay for a copy. If anyone has any
suggestions for how to enhance it, I'd be grateful, and any technical
tips or notes on any of the components would be most helpful too.
Thanks in advance.

				Ed
--
	Don't blame me, I voted against Amendment 2!

Edward Hartnett				ejh@khonshu.colorado.edu