> OK, I accept both of those things.  However,  there is still 
> a nagging question:  If I do, in spite of  good advice, want to play 
> around with a C chip, what is the best way to program it?

Depends which one it is. I started with a simple parallel programmer
but all it does is 16C84. Just a 74LSsomething and a 555 booster

Just talking about "playing around with" OTPs gets my sphincter
tightening. 'orrible things to develop on. And spare me the fuffing
about with UV and pricey windowed parts. Yuck

Wouter said -

> The alternative is use once and throw away

OTP can be used more than once, if the code is less than half
the space available (Microchip thoughtfully made FF NOP), and
you are limited by how many bits are in the start org

> Maybe you are a much better programmer than I am?

Even when I developed 68HC products using an emulator,
I never felt comfortable burning an OTP. Money down the
drain if it needed changing

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