Re: Curve Tracers

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