PDP-11/44 assistance....

From: Jay West <west_at_tseinc.com>
Date: Tue Oct 12 20:01:42 1999

Tony had asked about what chips were in the standard memories board that I
posted about....

It is Standard Memories MM-144. Unibus: there's two rows of 20 ram chips
each, and underneath that is two rows of 20 empty sockets each. Underneath
that is two rows of 19 ram chips each, and underneath it is two rows of 19
empty sockets each. So, (2x20)+(2x19)=78 chips total. The chips are all OKI
M3764-20RS. On the right side of the board on the top are three LED's
designated +5B, RUN, and U.ERR. Underneath that is a 14 pin DIP jumper pad,
and two 8 switch DIPS. Any ideas on how much memory this is and would anyone
happen to have docs on this board?

Also, I think my previous post about the modules in the 44 wasn't listed
correctly. The slots are filled as follows:

1 A-B M7090 CIM
4 A-F M7094
5 A-F M7095
6 A-F M7096
7 A-F M7097
8 A-F M7098
10 A-F MM-144 (see above)
14 A-B first half of M9202
15 A-B 2nd half of M9202
16 D G727A
23 M9302

I found it odd (to my very uninformed mind) that the G727A was stock in slot
16 D with nothing else around it. If I don't want to hook anything up to
this system other than a serial console for now, how should I move the above
cards around to prevent continuity problems???

Thanks in advance!

Jay West
Received on Tue Oct 12 1999 - 20:01:42 BST