20 May
2007
20 May
'07
4:52 a.m.
Howdy, guys.
I've got an 8-bit ISA card here that I pulled out of an IBM PC/AT
5170 machine (which apparently was a VM/PC development machine at one
point, and contains program code for the PC3277/GA).
I wondered if anybody could help me identify what it might be. Parts
have date codes in 1985; chips of note are 32k in 70ns 4Kx4 SRAM;
intel 8086, 8259, and 8254; and a pair of 12-bit monolithic DACs. I/O
is by one DE9m and one DB25m.
Pictures here:
http://www.typewritten.org/~bear/junk/unknown-card-annot.jpg
http://www.typewritten.org/~bear/junk/unknown-card-obl.jpg
Ideas?
ok
bear
