18 Feb
2013
18 Feb
'13
11:24 a.m.
DG used in-house part numbers, very much like IBM and
HP did. But I
haven't come across an equivalence list, so if you don't have the
schematics, you're lost.
I vaguely seem to recall I had a DG equivalence list in the 90's. Or maybe confusing
it with something else and my memory is just a red herring. Maybe Carl Friend has it?
Poly Paks always had lots of house-numbered TTL, I'm guessing floor sweepings from DG
:-)
When I had to read DG schematics, if the part didn't have a standard number on it, it
was usually pretty obvious from pinout or other parameters, what the standard part was.
By the time the Eclipse came along, those were just chock full with bipolar PROM's.
Tim