I wonder if there is a cheap way to program 17C42 chips?

Microchip once sold a bare bone device (don't remember its name) to 
do the trick. (Kind of self programming via external EPROMS)

I've seen a programmer published in ELECTOR magazine, but the circuit
contradicts the programming notices for the 17C42. 

Are there two ways to program these beasts?

What programmers do you use?

 Ulrich

Ulrich Hoffmann, Uni Kiel        WWW: http://www.informatik.uni-kiel.de/~uho/
Institut f. Informatik,                     email: uho@informatik.uni-kiel.de
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