Wouter van Ooijen wrote:

>> Is there anything more I can do to help debug this ?
>
> - try without an xtal on the target

OK, Done. Got the same "OK,fail,OK,fail,OK..." pattern
(*if* powering off between each run)

> - try with the dongle circuit

And that is what ?


> BTW does someone understand the exact meaning of the Vpp spec, for
> instance D110 on p34 of the 18Fxx20 programming specs? It shows a min
> and a max value. This could mean either:
>
> 1- programming mode will not be entered when below the min value, and be
> surely entered when above the max value
>
> 2- programming mode will be entered when avove the min value, and max is
> the maximum value you should evere apply to the MCLR pin

Well, I don't *know*, but "2-" above seems most reasonable.


Anyway, I have also tried some other Xwisp commands.

"READ" works ever time (after a successfull GO).
"ERASE" always gives an OK without any errors.

Jan-Erik.

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