On 11/01/2019 20:51, Bill Gunshannon via cctalk wrote:

Listed what I'm using in the beginning of this thread.
Just CPU and Memory at this point.

OK, I didn't see that - sorry.

BTW, BA23 and BA123 microPDP-11 backplanes aren't the same - it's the
first 4 slots that differ in a BA123, and slot 13 is different again.
Take a look at http://www.dunnington.info/public/PDP-11/QBus_chassis

Mine are all BA23.  Wasn't the BA123 for the MicroVAX?

No, it was introduced for the microPDP-11 series, and only later used for MicroVAX and MicroVAX-II. There are many microPDP-11/83 machines in BA123 cabinets, it was a very popular option because of the space for storage devices and the extra backplane slots.

--
Pete
Pete Turnbull

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