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 values. 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, Dave.