Identifying mystery TI ICs (Motorola MDP-1000 investigation continues...)

[Bill Degnan]

On Mon, Oct 5, 2020 at 1:10 PM Al Kossow via cctalk <cctalk at classiccmp.org>
wrote:

> On 10/4/20 11:13 PM, Josh Dersch via cctalk wrote:
>
> > Just made a minor breakthrough; a random usenet post suggested that the
> > MDP-1000 was just a rebadged General Automation SPC-12, and so it is.  I
> > suspect the internals of the unit I have (which is badged as an
> "MDP-6650"
> > on the rear) are a bit different than either the MDP-1000 or the SPC-12
> > (and I'm no closer to finding answers to my IC identification questions),
> > but it at least gives me another avenue to explore...
> >
> > (Bitsavers has a few items:
> > http://bitsavers.org/pdf/generalAutomation/spc12/)
>
> https://www.computerhistory.org/collections/search/?s=spc-12


Is this a case of not being able to find the correct TI or Motorola IC
guide or is there something unique / OEM about this one?   I do have some
late 60's early 70's IC guides of these manufacturers that I can check,
original bound paper copies.  Please advise.
Bill