From: Larry Mollica (larry-2004_at_pacbell.net)
Date: 2004-04-12 21:44:16
Hi all. I'm wondering if anyone has experience with, or knows of a source of information regarding using the PET to control Hewlett Packard test equipment. I need a way to send specific "bus commands" to the HP gear. From what I gather, bus commands are essentially like sending regular data except that the ATN line is held low. If there's a way to do this within PET basic, it has escaped me. I'm thinking that it should be possible to brute-force bus commands by POKEingto the PIA such that it simulates sending data with ATN low. It could probably cheat some steps too, like using a timing loop rather than looking for proper bus hand shakes, etc. There are only a few bus commands I need to send, mostly to release control of the instrument front panel. I'm hoping someone has already figured this out and knows how to do it... Thanks, Larry Message was sent through the cbm-hackers mailing list
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