Yep - done that OK.
You just have to set the reset vector to jump to a start area that you can
pogressively clear to nops until you run out of space - one way or the
other. Luckily (or by design) the code for nop is 00.

RP





> > I know that I cannot program an OTP device (in my case
> > it is PIC16C675) more than once

Before switching to the F84 I was using the Motorola 68HC
OTPs, and they were able to be re-used as the reset (start)
vector could be increased. That register started at 0s and you
could keep re-using it until the program would no longer fit
in the memory left, ie the address sequence went 0000, 0001,
0011, 0111 etc, you couldn't change a 1 to a 0 like a normal
binary incrementation

I've never used a "C" PIC ever so might be off the mark here,
but is it possible to something like this with a PIC ? If the reset
vector starts with all 1s could you store programs from the top
of memory down until you reach 0 in the start org ?

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