QBUS VAX and M7941 under VMS - info needed!

From: Dave Woodman <dave_at_naffnet.org.uk>
Date: Thu Apr 18 16:38:24 2002

Hi all,

      I have a MicroVAX (BA123 enclosure, KA650 CPU) that I would like
to put to work... to this end I have two M7941 (DRV11) parallel I/O
cards that I would like to bring into service. The Micronotes say that
this card is compatible with the 22-bit QBUS, and I have the Field
Service print set so I can set the CSR and vectors to appropriate

      Of course, VMS does not have a driver for these cards, but I am
not too frightened by the prospect of a little code - here lies the
problem! Can anyone tell me just how this card maps into the I/O space,
given the CSR? I would like to know just where to read from and write to
in order the drive the beastie...

      Thanks in advance for your help,

Received on Thu Apr 18 2002 - 16:38:24 BST

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