MicroVAX 3100 M10

From: Miroslav Pokorni <mpokorni2000_at_yahoo.com>
Date: Thu Apr 8 16:06:15 2004

In general, MicroVAX III could handle 64 Meg, though some CPU boards did not
have all address lines brought out of Memory Controll Unit pins. Here my
memory gets fuzzy, I am not sure whether that was the case only with those
'workstation' types or that was also a case with backplane based machines.
There was an outfit that was retrofitting such CPU boards for full range of
addresses and I do rememmer whether they were Stateside or in Holland.
The largest Digital memory for backplane based MicroVAX III was a 32 MB
board, but that came quite late in the life of MicroVAX III. The initial
'Minimum Configuration' shipments of those systems were with 8 Meg, then
that was upped to 16 Meg. The 4 Meg board that is mentioned, is probably
partially populated 8 Meg layout. However, there were third party boards up
to 48 MB. Rational for that corkey size was that customer does not have to
trow away original 16 Meg that came with machine and still fit full 64 Meg
complement into two slots.
Received on Thu Apr 08 2004 - 16:06:15 BST