From: Larry Mollica (larry-2004_at_pacbell.net)
Date: 2004-04-14 17:46:10
Quoting Marko Mäkelä <firstname.lastname@example.org>: > On Tue, Apr 13, 2004 at 12:01:31PM -0700, Larry Mollica wrote: > > I don't have the HP manuals handy right now. The instruments we are working > > with are HP RF gear, like signal generators and spectrum analyzers. There > > seems to be some bus commands common to all of the HP RF gear I've seen so > > far, the one I recall is ASCII "?" > > That would be 0x3f, or UNLISTEN. There's a special ROM entry for sending > that > command. Ok, so that's not something exclusive to HP instruments as I assumed. Is that regularly sent by the PET, maybe when a IEEE488 file is CLOSEd in basic? If that is already being sent by CLOSE or whatever, then it just doesn't do anything visible to the instrument. I was expecting it would release the instrument from 'remote' status, but it may be it requires the specific command to release the front panel. In any case, I still need to work out a way to send specific bus commands to the peripheral. Thank you for the info Larry Message was sent through the cbm-hackers mailing list
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