On Oct 6, 12:52, Zane H. Healy wrote:
  5th or 6th
edition would be more practical on this system, though you'd
probably have to write a TU58 driver.
Eric 
 I thought 5th & 6th were limited to Unibus systems....  For that matter,
 will 7th even run on a Q-Bus system? 
 
7th Edition certainly runs on QBus.  That's what one of my 11/23's is
running, and it was a development machine for Heriot-Watt University, when
they were the UK distribution centre.  It has 256KB RAM and two RL02's on
an RLV11 controller.  With a small tweak, 7th Edition will also run on an
11/73.
--
Pete                                            Peter Turnbull
                                                Network Manager
                                                University of York