On Sat, Jan 30, 2021 at 3:58 PM Nigel Johnson via cctalk <cctalk at classiccmp.org> wrote: > > OK, thanks, Glen, i didn't think of that! Not sure why they would do > that with all memeory on-board! > The PMI interfaces of the KDJ11-B and KDJ11-E modules are used to interface to the M8191 KTJ11-B UNIBUS adaptor in the PDP-11/84 and PDP-11/94 systems.