Set of mystery DEC boards: who can help me identifying these?

Noel Chiappa jnc at
Tue Jun 7 17:20:40 CDT 2016

    > From: Pierre Gebhardt

    > I uploaded some

Well, I don't know what they are, but a couple of things about that first
board (the one that has the 3 blue Berg headers on it):

It has jumpers for UNIBUS grants (both interrupt, and DMA). Which doesn't
necessarily mean much, the various MK11/etc memory cards (M7984, M8728,
M8750) have them too, and they _definitely_ don't plug into a UNIBUS. But
this card has nothing connected to the CDEF connector pins, but it does to
the AB, suggesting that whatever it is, it might go in a MUD slot?

Someplace I have the pinout for the M9014/etc UNIBUS extenders (cards that
plug into a UNIBUS in/out slot, and convert it to 3 40-pin flat cables), but
I can't find it at the moment (I remember discussing it here, so maybe it's
in the list archives). It would be interesting to see if this card has the
same pinout.


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