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. The first BA123 system I ever saw was a KA630/uVAX-II in 1986. We put Ultrix T-2.0 on it and ran it for several years. -ethan
