Hi.  Today I have trashed two 16C711 JW devices.  Although I
spent a lot of attention to the code protection being set to OFF,
both chips reported a programming error, namely the CP setting
"illegal".

Both are now not erasable anymore and ready for the trashcan.
I ordered another two, and 20 OTP devices just in case I can't
fix the problem.

Why did MPLAP / Picstart+ programm a part of the bits, although
I explicitly set CP to off?   I have no config bits defined in
the source code, I entered the settings manually in the PS+
programmer window.  I even clicked CP on then off to be sure that
that MPLAB "touches" the bits and doesn't leave them in an undefined
previous state.


What's wrong?  Am I better off with debugging with OTP chips instead
of those expensives JWs when I have to toss them away anyway after 1
use?