Wouter van Ooijen wrote:

> You seem to be a few steps ahead of me Rob (now who was arguing that
> using more-or-less open software is a bad idea when you want to make
> money?). Maybe you also noticed (and asked Mircochip): the 18FXX39 ICSP
> guide p7 mentions a full-chip-erase, but table 3-1 shows only partial
> erase codes. And code 80h (which is the bulk erase on for instance the
> 18Fxx2 chips) is suspiciously missing. Just an omission?

Me a few steps ahead of you???? Maybe I took a shortcut ;-).

I discovered the duplicate device-IDs when I wanted to added the 18Fxx39
  series to the list of supported PICs by my own variant of your XWisp
for the Wisp628 programmer. Only after I got some sample chips I was
sure it was not a mistake in the datasheets (would not have been the
first mistake of that kind!)
Before I realised what I was doing I programmed an 18F2539 (as if it
were an 18F252) with a 'blink a led' program incl. a bulk-erase!    The
whole 32 KB of memory can be read normally, but the motor kernel (0x6000
and up) was erased! Apparently the bulk-erase code that is currently in
Wisp628 (1.09) seems to work (too) well for the 18Fxx39's!

I didn't ask MicroChip more questions.

Regards, Rob.


--
Rob Hamerling, Vianen, NL phone +31-347-322822
homepage: http://www.robh.nl/

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