Help ID'ing a PDP-8/A Omnibus board
Josh Dersch
derschjo at gmail.com
Thu Aug 8 11:06:55 CDT 2019
Hey all --
Got a PDP-8/A at VCFW this past weekend. It's an OEM model sans programmer
panel and was apparently used in a CNC application. It contains a board
I'm trying to ID. It says "PDP-8/A CONSOLE ROM" on it and has no other
identifying marks other than a logo on the back. See the pictures here:
http://yahozna.dyndns.org/scratch/pdp-8/8aconsole1.jpg
http://yahozna.dyndns.org/scratch/pdp-8/8aconsole2.jpg
<http://yahozna.dyndns.org/scratch/pdp-8/8aconsole1.jpg>
None of the braintrust at VCF were able to identify this mark. I'd guess
that the board provides a simple ODT interface or something similar. The
three ICs in the upper-left with the handwritten labels are 82S129 256x4
bipolar PROMs. They're not socketed so I haven't read them in yet. The
8/A's gonna need some TLC before I dare power it on...
I'm mostly curious if anyone can ID the logo -- it would be interesting to
know who made this thing.
Thanks!
Josh
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