BA23 w/RA70

From: Daniel T. Burrows <dburrows_at_netpath.net>
Date: Thu Oct 19 07:33:23 2000

>> The box may be an earlier model, badged microPDP11, so
>> I have to wonder if the VAX, 2 mem bds, kda50, RA70,
>> RQDX3 (for the RX33) and a DELQA would be too much for
>
>Be very careful with that chassis! If it was really a MicroPDP, it will
>have an 18 bit qbus backplane in it. It will _destroy_ 22 bit qbus boards
>since there are power pins on the 18 bit bus that mate to data pins on the
>22 bit bus.
>
>Then again, my memory may be completely broken and I've got it all wrong.
:)
>
>g.

I think you are remembering the BA11S and others. All the BA23's I have had
and seen have all had 22 bit backplanes. ( I have at least 15 BA23's at the
moment.)

Dan
Received on Thu Oct 19 2000 - 07:33:23 BST