MEM11A questions

Guy Sotomayor ggs at
Mon Mar 7 15:46:10 CST 2016

> On Mar 7, 2016, at 1:27 PM, Mike Ross <tmfdmike at> wrote:
> On Tue, Mar 8, 2016 at 8:16 AM, Guy Sotomayor <ggs at> wrote:
>> Hi,
>> Over the weekend I was looking through some old CAD files and came across my
>> original design for the MEM11A.  It was an SPC board that contained only 128KW
>> of FRAM.
>> I’m wondering if there’s any interest in that board.  I do have to iterate on the design
>> a bit but I should be able to get something ready sooner than with my current board
>> design (plus I know it will fit in an SPC form factor because I’ve already done it).
>> What I’d like to know from folks is if there’s interest in that design?  Would there still
>> be interest in what I’m now calling UMF11 (Unibus Multi-Function)?
> Ummm enlighten us a little more about what exactly it could do and
> what machines it could be used in?

MEM11A?  It can be used in any PDP11 that has SPC slots and will provide 128KW
of non-volatile RAM.  I had originally gone down this road to provide memory for
memory challenged machines (most notably the 11/20) but could be used in any
Unibus PDP11.

TTFN - Guy

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