20 Jun
2002
20 Jun
'02
10:05 p.m.
Actually I was only concerned with the D/A and A/D boards and
termination points. Really didn't care about the controller itself.
One that I really wish I had was a UDAC. The UDAC was marketed by
Reliance Electric and was an 8 bit system that ran CP/M or a program
like it.. The control program was written in an interactive basic. If
you want a valve open that was on I/O point 197, you punched it "Let
V197 = 1" and the valve opened. IT was really cool. I installed it in
a Nabisco margarine (then a division of Standard Brands) in 1977. I
remember the 8" floppies. It was finally given to a mechanic at the
plant. His wife put it out in the pasture when they were divorced. I
found it almost 9 years later. Way too late for a rescue.
Sellam Ismail wrote:
On Thu, 20 Jun 2002, James L. Rice wrote:
I have seen several. The Foxboro company makes
process instrumentation
and the PCP-88 were designed to run large process systems. I saw them
used in a Pillsbury plant in the dough mixing lines and in several
vegetable oil refineries.
Were there any modifications, other than external facades perhaps, that
differentiated the PCP-88 from the PDP-8? Or, as I'm guessing, were they
electrically and electronically identical?
Sellam Ismail Vintage Computer Festival
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