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Old 10th Oct 2019, 7:48 pm   #9
SiriusHardware
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Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 3,159
Default Re: A Simple Programmer for TESLA "MH74S-" bipolar PROMs

The forum engine downsizes uploaded images quite aggressively and the circuit diagram for the hardware (in post #5) has ended up quite small and low-rez.

If possible, could you please post that diagram again, but this time put it into a .zip file and attach that, so that it can be unzipped and viewed in its original glory - it's very neat, by the way, it looks as though it has been drawn with hand stencils or with a computer drawing package designed to produce a result which looks like it has.

I think I have a tube of 74C906 ICs rescued from near-oblivion at work, if anyone wants to have a shot at putting one of these together.
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