PDP-11/84, PMI and Q-bus - test-drb@ccmp.vtda.org

23 May 2007

So in order of preference:
  KDJ11-BF (M8190-AE)  Goes in slot 1
  KDJ11-Bx

  MSV11-JD  Slot 2
  MSV11-JD  Slot 3

Right so that's the answer. Good I shall now look for those.

Thanks

Rod

-----Original Message-----
From: cctech-bounces at classiccmp.org
[mailto:cctech-bounces at classiccmp.org] On Behalf Of Pete Turnbull
Sent: 23 May 2007 16:24
To: On-Topic and Off-Topic Posts
Subject: Re: PDP-11/84, PMI and Q-bus

On 23/05/2007 08:44, Rod Smallwood wrote:
...
  Hi Jerome,
      Sorry I did not pose the question very well. 
 I am trying to get back to the original issue.

 Which is:

 	1. I have an 11/94 with a missing cpu board.
 	2. The correct CPU board as you know is too expensive.
 	3. Please will somebody give me a low cost alterative in a form I can 
...
  understad.

 	4. So all I want is for somebody to say is something like:

          " Put CPU board type KDJ11-xx (M????-??) in slot 1."  	 
Practically speaking, if you can't get a KDJ11-E M8981 PDP-11/94 or /93
board, the next best is a KDJ11-BF M8190-AE which is the 18MHz board
with floating point accelerator used in an 11/84 or 11/83.  But any
KDJ11-B would do, the permutations being 18MHz or 15MHz, and with or
without FPA.  The plain M8190 (no suffix) KDJ11-BC can't have an FPA
added.

The other common flavour of KDJ11 is the MM7554 used in the 11/53 but
that can't use PMI (which you need).

All the above are quad-height boards.  You do not want the dual-height
KDJ11-A.

...
  	   " Put a memory card type MSV11-xx (M????-??)
in slot2." 
MSV11-J, M8637, or failing that, MSV11-RA, M7458.  Look in
http://www.dunnington.u-net.com/public/PDP-11/QBus_memory to see how
much memory the various versions have.  One or two MSV11-JD would be
best.

...
           " Put another (optional) memory card
type MSV11-xx (M????-??) 
...
  in slot3." 
See above. And that is the correct order.  If you only get one memory
board you may also need a Minimum Load Module for slot 3.

-- 

Pete						Peter Turnbull
						Network Manager
						University of York