Q-18 to Q-22 backplane conversion - test-drb@ccmp.vtda.org

22 Dec 2005

On Dec 21 2005, 13:57, joseph c lang wrote:
...
  Before I put all the screws back in this thing......

 I'm converting a H9273 Q-18 backplane to use a 11/23 Q-22 CPU and
 MSV11-LK memory. (and RQDX3 and DELQA )

 >From the prints I can find ,It looks like all I have to do is  bus the BDAL18
...
  through BDAL21 lines, and add an ECO to the BDV11 that
terminates
 the additional BDAL lines.

 Am I missing something? 
That's all, as far as I can remember (done this a few times).  If it
came from an expansion box rather than a CPU box, or from an early
11/03, look for W1...W3 on the backplane and check that W1 is inserted
and W2,W3 are not.  Remember this is a "straight" backplane, so don't
try to bus the CD side.

-- 
Pete						Peter Turnbull
						Network Manager
						University of York