Charles wrote:
 
 http://www.dilog.com/unibus.html
 DQ130 Qbus, Pertec I/O, TM11, 4 drives, Quad Height 
 
Ah, yes, I'd forgotten that link which I came across a couple of months ago.  Sadly,
no doc online.  I guess I could try out their support team and see how friendly they are
with requests for informatoin on 25-year old gear.  ;)
J