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I havent been following this thread.  That said, if you want to clear
*all* the RAM, wouldn't a quick/easy way of doing it be to tie one
pin to MCLR to force a processor reset, but at the same time, store
the current address of the PC to EEPROM before doing the reset, and
have a startup routine that reloads the PC to the value in the
EEPROM?

Just a thought...

- --Brendan

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