At 08:10 PM 8/12/99 +0000, Lawerence wrote:
Also, I saw what I swear must be a quad height pdp8
board. He wasnt
sure what it was, so he wouldnt let me have it yet. He thought it
might be a PDP11 board (did they make quad height PDP11 systems?).
Heres what the board says:
Excelan
Exos 204 s/n 001993
DEC used the same basic connector on its first three busses (OMNI, UNI, and
Q). and they evolved from the connector they used on the Flip chip chards.
PDP-8 boards are :
1 "high" - Straignt 8, 8/I, 8/L, 8/S
4 "high" - 8/E/F/M
6 "high" - 8/a
PDP-11 boards come in two flavors Unibus and Q-bus the are either 2 high,
four high, or six high. Generally only Unibus and PDP-8/a boards are 6
high. (I don't think they ever made a Q22/CD/EF backplane.)