VT78 - lots of questions - test-drb@ccmp.vtda.org

23 Dec 2000

On Dec 23, 17:27, Tony Duell wrote:

...
  I had to do almost the reverse -- my PDP8/e is a
desktop system (I don't
 have a spare rack for it at the moment), and the RX01 drive is in the
 tabletop case. I had to make up the cable to link the DB25 on the back
 of that to the RX8e card in the PDP8. 
The pins used in the DB25 (and the 37-way) are arranged at one end of the
connector, in such a way that I am wondering if they're arranged to be easy
to crimp a matching connector onto a ribbon cable.  And I seem to remember
that only the alternate pairs of pins are used on the RX02's 40-way Berg.
 Hmm, looking at the M7744 there seem to be 11 signal lines, so that idea's
not quite right.  Time to dig out the print set, I think.

...
  AFAIK, you can set the DIP switches in an RX02 so that
it behaves
 identically to the RX01. This shouldn't give any problems. 
Yes, I've found the User Manual now, and it gives the DIP switch settings
for use with RXV21/RX211, RXV11/RX11/RX8E, and RX28.

-- 

Pete						Peter Turnbull
						Network Manager
						Dept. of Computer Science
						University of York