10 Oct
2006
10 Oct
'06
11:30 p.m.
-----Original Message-----
From: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] On Behalf Of Philipp Hachtmann
Sent: woensdag 11 oktober 2006 3:27
To: cctalk at classiccmp.org
Subject: Help with PDP11 modules, DEC and Plessey
Hi folks,
today I digged out some PDP11 modules. I wonder what I can do
with them.
A Plessey-labeled Unibus Box with 11/34 front panel (the
simple one) is still waiting to be picked up by me or put to scrap...
Ok, what I found:
* DEC M8265+M8266 (11/34A CPU), M9301 bootstrap/terminator
Question: Is that enough to get the machine going? Do I need
anything else (except memory and a kind of tty interface)?
What about the "parity controller" which I don't have?
Don't know about the parity controller. I am guessing that it
belongs to the memory, not the 11/34 CPU. As you say, a little
memory and a console interface M7856 is all you need, besides
the DD11-PK (11/34 CPU) 9-slot backplane. If you got the two
CPU boards inserted in a backplane, it's probably fine ...
Ohh, you need a power supply to with all needed signals like
DCLO etc. The 50/60 Hz "tick" is not needed for the CPU,
it *might* for the OS to run on it.
* Plessey PM-DC/11 "status control", P/N
700485-100C
Plessey PM-K11 "disc control", P/N 700490-101E
Plessey PM-K11 "data control", P/N 700475-100B
Plessey PMDC/11 "bus control", P/N 700470-100B
These are four quad wide boards. I have no clue what they
are/where good for. No connectors. Some DIP switches.
If anyone could help me out with some information and/or docs
- would be great.
My first idea was immediately going to the RK11-D controller for
the RK05 drives. The DEC (equivalent) modules are:
M7254 - status control module
M7255 - disk control module
M7256 - registers module (data path)
M7257 - bus control module
* Plessey PM-DC1100, P/N 703380-100H
This hex wide board looks like an Unibus SMD disk controller.
If it's that I am VERY VERY VERY interested in information
about that.
At the place I found the parts there is still an SMD drive....
It has three 26 pin ribbon connectors and one 60 pin connector.
No clues here ...
* Plessey memory board (?!), P/N 701830-100G
Some information about that would be great. If anyone has
something to share....
Again, I don't know ...
Ok, if anyone can help me.....
All the stuff is available to anybody urgently needing it.
Good night,
Philipp :-)
Henk PA8PDP.
This message and attachment(s) are intended solely for the use of the addressee and may
contain information that is privileged, confidential or otherwise exempt from disclosure
under applicable law.
If you are not the intended recipient or agent thereof responsible for delivering this
message to the intended recipient, you are hereby notified that any dissemination,
distribution, or copying of this communication is strictly prohibited.
If you have received this communication in error, please notify the sender immediately by
telephone and with a "reply" message.
Thank you for your cooperation.