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From: john larkin <JL@gct.com>
Newsgroups: sci.electronics.design
Subject: Re: Curve Tracers
Date: Thu, 21 Nov 2024 08:05:15 -0800
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On Thu, 21 Nov 2024 13:58:16 +0100, Arie de Muijnck
<eternal.september@ademu.nl> wrote:

>On 2024-11-20 21:30, john larkin wrote:
>> 
>> GPIB ain't modern! It's 50 years old.
>> 
>> Ever read the actual spec? The state diagrams will give you nightmares
>> for weeks.
>> 
>
>Reading the spec and studying the state diagrams was a great learning experience. No nightmares whatsoever.
>
>I designed lots of GPIB = HPIB = IEEE-488 interfaces for existing and new equipment, first starting with TTL, then CMOS, then LSI chips, then MCU bit-banging, and finally using the NI (National Instruments) chips together with an MCU. Last design with GPIB was the PLPS2005 (https://www.artisantg.com/info/Muetta_PLPS2005_Manual.pdf).
>Made lots of money on those designs. Also discovered a bug in the MC68488 chip from Motorola, they acknowledged it later (all communication by telex in those days).
>
>Arie

We like USB for small boxes. It's basically free on an RP2040. If it
enumerates as a serial port, you don't even have to install drivers.