[comp.sys.hp] Limit on number of cs80 devices on one machine?

bailey@math-cs.kent.edu (Jeff Bailey) (07/21/90)

I'm trying to attach more than 8 CS80 devices to one HP9000/350.
The machine has the built in HPIB as well as 2 98625B high speed
HPIB disk interfaces. At first I thought the built in HPIB was
dead but now I think that there must be a limit of 8 devices in
the cs80 driver in the kernel. If anybody knows for sure, or
even better, knows how to get around this, I would appreciate the
help.

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Jeff Bailey (System Administrator)	<bailey@math-cs.kent.edu>
Department of Mathematics and Computer Science
Kent State University
Kent - OH 44242

rjn@hpfcso.HP.COM (Bob Niland) (07/22/90)

re: > I'm trying to attach more than 8 CS80 devices to one HP9000/350.

> At first I thought the built in HPIB was dead but now I think that there
> must be a limit of 8 devices in the cs80 driver in the kernel.

There is a limit of 8 open CS/80 devices, irrespective of the number of
buses.

There was a version of the code for 6.5 that had a limit if 16, and there
may be one for 7.0.  I'll poke around on monday and see if I can find it.
Since this is unsupported code, we'll need to involve your local HP SE when
we provide it.  Please have that person contact me.

Regards,                                              Hewlett-Packard
Bob Niland                                            3404 East Harmony Road
Internet: rjn@hpfcrjn.FC.HP.COM                       Fort Collins
UUCP: [hplabs|hpu*!hpfcse]!hpfcrjn!rjn                CO          80525-9599