> 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...
The necessary manuals are all available at:
http://www.openvms.compaq.com:8000/
Start with the OpenVMS VAX Device Support Manual
(
http://www.openvms.compaq.com:8000/73final/documentation/PDF/OVMS_VAX_SUP_GD
.pdf )
and the OpenVMS VAX Device Support Reference Manual
(
http://www.openvms.compaq.com:8000/73final/documentation/PDF/OVMS_VAX_SUP_GD
.pdf )
Both of these are now in the archived section.
The second one of these is basically
an introduction to writing a device
driver for OpenVMS VAX and
includes probably all the info
you need for the Qbus mapping
in Chapter 14.
The Coinnect to Interrupt stuff in
Chapter 21 may be a useful introduction
if you've not done a full driver before.
It will show you how to map the
registers and respond to device
interrupts. Once you can do that
you should have the hang of talking
to devices on the Qbus and can move on
to doing a driver proper.
Antonio
Received on Thu Apr 18 2002 - 17:20:49 BST