18 Oct
1998
18 Oct
'98
8:51 a.m.
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.