While checking out the contents of some 8" floppies on my PDP-11/73, I
spotted a couple of circuit boards sitting on top of my LA-120 (that
reminds me, I've got to get another box of greenbar... hopefully
Office Depot still stocks it; can you believe that I've had quite a
few co-workers who had no idea what greenbar paper is?). One of these
boards is an S-100 bus board, a Compu-Das model 696-33 made by Random
Factors, Inc. of Durango, Colorado. The board is partially populated
by chips (it came out of a repackaged Dynabyte 5200 system made by a
company Computermotor Corp.), two of which are a Burr Brown ADC76KG
A/D converter, and another Burr Brown chip: an SHC80KP (not sure what
this one is), in addition to various TTL logic.
What's interesting about this circuit board is that the chips are all
socketed in little copper sockets made into the blue circuit board,
and, apparently, to add D/A functionality to this board as well, one
just plugs in some (or all?) of the missing chips.
Does anyone know anything about this board?
--
R. D. Davis
rdd_at_perqlogic.com
http://www.perqlogic.com/rdd
410-744-4900
Received on Tue Jun 06 2000 - 15:08:09 BST