RE: Parallel to HPIB

From: Leon Martin (martin@cobra.path.monash.edu.au)
Date: Tue Mar 14 1995 - 21:26:17 EST


Just a quick point of interest.

>This arrangement has the minor nuisance that the PC->paintjet mode
>conflicts with the HP, so if both computers are on at once, you must
>disconnect the cable between the HP and the PC->Paintjet; then, if you want

It's a few years since we did HP310 <==> pc via GPIB, but I seem to
remember that we were able to leave both the HP and the pc connected AND
both set as system controllers. I know this is a NO NO for a GPIB bus, but
as long as the pc was off when the HP was turned on/rebooted it actually
worked! We tend to leave our HP's on 24 hours a day so this wasn't a big
problem.
Another approach, if you don't want to pull cables on/off all the time, is
to toggle the `system controller' feature (set in the pc GPIB card
software) on/off as required.

Leon.

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