PDP 11-23 questions

From: ajp166 <ajp166_at_bellatlantic.net>
Date: Tue Aug 8 17:45:12 2000

From: Neil Cherry <ncherry_at_home.net>
To: classic <classiccmp_at_classiccmp.org>
Date: Tuesday, August 08, 2000 6:22 PM
Subject: PDP 11-23 questions


>I've found a PDP 11-23 computer oand I haven't the foggiest idea
>about it. What should I look for?
>
>Claims to have:
>
>M8044 DB
>M8044 DB


Two 32KW memories, second rev 32kw, no parity. You can have
more of those up to 128KW (256KB)

>M8186

11/23 KDF11A cpu if the handle has a C melted into it anywhere it's Q22
otherwise Q18 (assuming the second chip is there, the MMU).

>M8013
>M8014

RLV11 set, used for RL01 or RL02 removeable 14" 10mb disk.

>M8029
RQDX21 interface for RX02. the is an interface you need the
RX02 for a complete floppy system.

>M8012 YA


diagnostic/Boot/terminator card, a must have with M8186
as the CPU has NO boot (it does have microODT).

there is a field guide for PDP11s! Also there is no serial IO
that you have listed. Typically a M8043 (DLV11J 4 port serial)
or a M8017 maybe an old M7940 both similar DLV11 type
single serial ports.

Allison
Received on Tue Aug 08 2000 - 17:45:12 BST