> From: Chris Zach
> http://www.aceware.com.au/acms/images/Invent/GeneralRoboticsMSV_11R.jpg
I don't know what that is, but it's not an MSV11-R. Here:
https://gunkies.org/wiki/File:MSV11-R.jpg
is an MSV11-R.
> Maybe it's PMI memory without ECC? I count 18 bits across which seems
> like the MSV11-Q parity memory.
Alas, there is almost zilch original DEC documentation extant which speaks of
it; not even uNote #28:
http://www.ibiblio.org/pub/academic/computer-science/history/pdp-11/hardware/micronotes/numerical/micronote28.txt
which briefly covers all the other late DEC QBUS memories (including the
MSV11-M, which ia otherwise _completely_ un-documented) mentions it.
But I agree that given the 18 chips, it'a probably parity.
Noel
