On Dec 12 2005, 18:01, Allison wrote:
  uVAX-II and 11/73B need/require over the top.  11/23B
(and 11/73A)
 is strictly Q22.  I happen to have the earlier non-pmi 11/73.
 And of course the uVAXII. 
11/73 doesn't need over-the-top and has no provision for it.  As an
11/73 it's supposed to be used with normal QBus memory, but all will
work with PMI memory (a la 11/83, in fact they're the same board).
--
Pete                                            Peter Turnbull
                                                Network Manager
                                                University of York