GPIB state machine info WTD
Dwight K. Elvey
dwight.elvey at amd.com
Fri Sep 9 12:06:25 CDT 2005
>From: "Ethan Dicks" <ethan.dicks at gmail.com>
>On 9/9/05, Philip Pemberton <philpem at dsl.pipex.com> wrote:
>> Does anyone happen to have any data on the GPIB state machine, or perhaps a
>> GPIB slave interface implemented in LSTTL?
>TNW made a serial interface for the PET that did not contain a
>microprocessor. Perhaps you could search for schematics on that.
>> I've got a copy of the HP "Tutorial guide to HPIB" and "PET and the IEEE488
>> Bus", but none of them cover the state machine...
>With that as a guide, if you don't find an existing state machine,
>there's plenty of information to generate one of your own. You could
>even prototype one in software.
As I recall, the GPIB chip made by TI ( forget the number )
had a data sheet that explained the states. Not much
to it as I recall, mostly just handshake stuff and address
recognition. It seemed like there was some timed stuff that
might not work well in software but for the most part I'd
suspect that Ethan is right, one could do it all in software.
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