>It could be what's referred to as a MARS (Memory Address and Register
>Status) panel. The only one of those I've ever seen was at our PDP8 FS
>lab in Parker Street. It's a full-height rack panel (same height as the
>8/E) with several rows of lights for PC/AC/MQ/etc.
The front panel consists of the following
EA MA INST
o o o o o o o o o o o o o o o o
MB F E D WC CA B
o o o o o o o o o o o o o o o o o o
Link AC Ion Par Prot Run
o o o o o o o o o o o o o o o o o
POWER | paddle switches
SWITCH
- - - - -
The boards hang from the backplane (which is really grimey... can
someone suggest how to clean it?) and are reachable from under
the chassis:
Front panel end
============================
M220 M220 M113 M111
M220 M220 M700 M700
M220 M220 M216 M115
M220 M220 M114 M310
M220 M220 M216 M310
M220 M220 M111 M310
M617 M617 M216 M310
M617 M617 M115 M160
M160 M160 M119 ----
M115 M216 M117 ----
M160 M111 M115 M113
M160 M113 M117 M111
M115 M119 M113 M310
---- ---- M113 M310
fan ---- ---- ---- M216
side ---- ---- M360 M617
G020 G020 G221 G221
G020 G020 G221 G221
G020 G020 memory
W025 W025 memory
W025 W025 memory
G228 G228 G221 G221
---- G228 G221 G221
G624 G624 G228 G228
G624 G624 M102 ----
G624 G624 M623 M623
G785 G785 M115 M623
---- ---- M660 M906
---- ---- M660 M906
---- ---- M707 M707
M516 ---- M706 M706
M516 ---- M452 20ma console connecter
---- ---- ---- ----
M111 ---- ---- ----
---- ---- ---- ----
============================
fuses, power cord
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | email: gentry at zk3.dec.com (work) |
| Unix Support Engineering Group | mbg at world.std.com (home) |
| Hewlett Packard | (s/ at /_at_/) |
| 110 Spitbrook Rd. ZK03-2/T43 | URL:
http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 (DEC '77-'98) | required." - mbg KB1FCA |
+--------------------------------+-------------------------------------+
Received on Fri Oct 11 2002 - 12:12:00 BST