The Last of The Line - test-drb@ccmp.vtda.org

16 May 2007

Well I think I understand the list. 
But for clarity's sake here's the problem again.

1. I have a number of PDP-11/94's
2. The first three slots are Quad Qbus
3. The missing KDJ11-EB would have been in slot one
4. Slot two has a M9714 ALT PWR FOR KDJ11-E in it.
5  Slot three is empty. 
6. Slot four is a Unibus slot and has a M8191 KTJ11-B Unibus controller
in it 
7  Slot five has a M7547 TUK50-BB Tape controller in it.
8. Slot's Six,seven and eight are empty
9. Slot nine has a M9302 (UNIBUS TERMINATOR) at one end and a M9713
(MIN. LOAD MODULE) at the other. 

"Your mission Mr Phelps (Should you accept it) is to replace the missing
KDJ11-EB with the lowest cost plug in alternative that will run"

The winner gets (for the cost of the shipping) a 11/94 system unit box
as described above.

Rod Smallwood

PS Speed is not an issue here.

-----Original Message-----
From: cctech-bounces at classiccmp.org
[mailto:cctech-bounces at classiccmp.org] On Behalf Of Glen Slick
Sent: 15 May 2007 19:24
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: The Last of The Line

On 5/15/07, Pete Turnbull <pete at dunnington.plus.com> wrote:
...

  Anybody want to amend and add the module for the
memory? 
 http://www.dunnington.u-net.com/public/PDP-11/QBus_memory

 It also doesn't have columns to specify whether the boards work in 
 Qbus/Qbus backplanes or Q/CD backplanes without releasing magic smoke, 
...
  whether they have provision to use battery power,
whether they have 
 options to disable the parity CSR, or support block-mode transfers.  
 I'd expect users to get the nitty-gritty from the relevant user guides 
...
  or handbooks.

 As always, additions and corrections are welcome.

http://www.bitsavers.org/pdf/dec/qbus/EK-MSV1J-UG_001_May85.pdf

MSV11-JB    M8637-B     1 MB ECC PDP-11/84 ONLY
MSV11-JC    M8637-C     2 MB ECC PDP-11/84 ONLY
MSV11-JD    M8637-D     1 MB ECC PDP-11/84 or PDP-11/83
MSV11-JE    M8637-E     2 MB ECC PDP-11/84 or PDP-11/83

NOTE: Modules designated MSV11-JB and MSV11-JC may be used in the
PDP-11/84 (UNIBUS) system only.  Modules designated MSV11-JD and
MSV11-JE may be used in both the PDP-11/84 and PDP-11/83 (Q-bus)
systems.

NOTE: MSV11-JB and MSV11-JC cannot perform Q-bus protocol.

NOTE: Insertion of the MSV11-J in a Q-Q backplane my damage other
components or the memory itself.  The PMI bussing of the MSV11-J's CD
connectors is not compatible with the +12V bussing on the Q-Q backplane.