Help ID'ing a PDP-8/A Omnibus board
useddec at gmail.com
Fri Aug 9 21:53:36 CDT 2019
I have a bunch of Sunstrand and other NC/CNC boards here, but I thing they
were labeled as Sunstrand. I don't remember ever seeing that one, and not
sure if I have any for an 8. Most of the ones I have are Unibus.
On Thu, Aug 8, 2019 at 11:24 AM systems_glitch via cctalk <
cctalk at classiccmp.org> wrote:
> From the layout and text font, I'd guess Sundstrand (CNC machine company)
> but usually they put their logo/name on boards. I only have Unibus
> Sundstrand boards in the shop at the moment, but none of them have that B
> logo. Wouldn't be surprised if the B logo is from whoever made the boards,
> as in the actual board fab house.
> On Thu, Aug 8, 2019 at 12:07 PM Josh Dersch via cctalk <
> cctalk at classiccmp.org> wrote:
> > Hey all --
> > Got a PDP-8/A at VCFW this past weekend. It's an OEM model sans
> > 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
> > know who made this thing.
> > Thanks!
> > Josh
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