RX50 / RX33 Questions related to PDP-11's

From: Allison J Parent <allisonp_at_world.std.com>
Date: Thu Oct 15 19:38:21 1998

< I am almost sure you need a cable without the PC-twist. Also, you
< probably need to set the drive select jumpers properly (Can somebody tel
< us what to?). Remember that the PC-twist not only swaps over 2 of the
< drive select lines, it also gives separate motor on signals for the 2 dr

The "twist" cable only applies to PC or systems using PC patterned
interfaces. It DOES NOT APPLY TO RQDX and distribution boards used in
Qbus systems.

RQDXn uses a single bussed motor on and drive selection by drive select
jumper.

If you use a RX33 drive try using only one for starters, that will lower
the sillyness factor. If you media is RX50... why not use an RX50.

If all else fails and your configuring a second system move the controller
that works over to the target or move the target controller to the running
system as a second drive/unit.

Allison
Received on Thu Oct 15 1998 - 19:38:21 BST