> On 11 Jan 2019, at 23:59, Ethan Dicks via cctalk <cctalk@classiccmp.org> > wrote: > > On Fri, Jan 11, 2019 at 4:39 PM Pete Turnbull via cctalk > <cctalk@classiccmp.org> wrote: >>> 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. > > Hmm... I did not know they put the 11/83 in a BA123. It makes sense > since, as you say, there's room for storage devices and plenty of > slots.
It’s going back severalteen years now but I’m pretty sure I built a Micro 73 into a BA123, it’s a CD22 backplane after all. I still have all the cards AND the BA123 but I’m supposed to be turning it back into the MVII it was originally, back in 1986 when it was called FRUIT. -- adrian/witchy Owner of Binary Dinosaurs, the UK's biggest private home computer collection? t: @binarydinosaurs f: facebook.com/binarydinosaurs w: www.binarydinosaurs.co.uk
