Need Info on DEC 11/84 Board, M8190

From: CLASSICCMP_at_trailing-edge.com <(CLASSICCMP_at_trailing-edge.com)>
Date: Sun Oct 18 15:51:04 1998

>I have one -AB that has a socket for the FPJ11 and one -AB that doesn't
>have a socket installed. Are these the same board?

I would gusess so (assuming that it really is a -AB revision and
some handles haven't been swapped around.)

> Is installing a
>socket on the board without one difficult (being it's multilayered)?

Not so bad if installed pin-at-a-time.

>I have a couple of 1MB M7458-AH (MSV11-RA) PMI boards. Although the
>Micronotes refer only to MSV11-J boards, I assume that what it has to
>say applies to the MSV11-R also?

Amazing! Someone actually read the micronotes! About 3/4 of the
Q-bus questions asked here are answered in great technical detail
by the micronotes, yet it seems like most folks still ask without
bothering to consult them...

Yes, the MSV11-R's are just as PMI as the -J's.

>I also have a 4MB non-PMI board. What sort of performance loss do I
>get by using the non-PMI memory?

It depends on the I/O vs CPU memory load. It's a visible performance
gain, but not incredible - I'd say 10-30% for most things.

> My goal is to run 2.11BSD, so more
>memory may be better than faster memory.

1 Mbyte is sufficient for 2.11BSD, and 2 Mbytes is more than
enough.

Tim.
Received on Sun Oct 18 1998 - 15:51:04 BST