New addition to the collection....PDP-11

From: Eric Smith <eric_at_brouhaha.com>
Date: Sun Oct 3 02:08:29 1999

"Jay West" <jlwest_at_tseinc.com> wrote:
> A PDP-11/44. It would appear that inside the cpu chassis is a CIM? card,
> about 5 cards that make up the cpu,

The CIM is part of the CPU.

Don't move the CPU and memory cards around; they have dedicated slots.
(Well, there are four memory slots that are identical).

The module utilization for the main CPU backplane is:

slot module

1 A-B M7090 KD11-Z CIM Console Interface Module
1 C-F M7091 KE44-A CIS (Commercial Instruction Set) option
2 A-F M7092 KE44-A CIS (Commercial Instruction Set) option
3 A-F M7093 FP11-F Floating Point option
4 A-F M7094 KD11-Z CPU Data Path
5 A-F M7095 KD11-Z CPU Control
6 A-F M7096 KD11-Z CPU MFM Multi Function Module
7 A-F M7097 KD11-Z CPU Cache
8 A-F M7098 KD11-Z UBI Unibus Interface

9-12 A-F M8722 MS11-M memory (256 KB ECC)
        or M???? 1 MB ECC

13 A-F SPC (quad or hex), 13 A-B are MUD
14 A-B Unibus terminator or output
14 C-F SPC (quad)

Note that slot 1 is the rightmost as the machine is viewed from
the front, and that row A is toward the read and row B toward the
front.

If you install or remove NPG devices in slot 13 or 14, you may
have to wire wrap some lines on the backplane.

Unused SPC slots require a G727, G7270, or G7273 card for bus
grant continuity.
Received on Sun Oct 03 1999 - 02:08:29 BST