PROMs and EPROMs, specifically 2332/2532/2732

Adrian Graham witchy at
Mon Oct 26 18:53:02 CDT 2015

On 26/10/2015 17:09, "John Robertson" <jrr at> wrote:

> Hi Adrian,
> Perhaps one final test for your 2332s is to do a Diode Test on the pins
> relative to the ground pin (pin 12) and Vcc pin (24). These should sow
> either open or something like 0.6 or higher voltage drop across the pins
> - exchange the probes to check both directions.

I've just realised what you meant. This means it's late and time I put the
meter down for the night :)
Binary Dinosaurs creator/curator - the UK's biggest private home computer

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