Q-18 to Q-22 backplane conversion

[Pete Turnbull]

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