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PICList Thread
'[PIC]: On reset do'
2002\08\20@170634 by Walter Banks

picon face
Wouter van Ooijen wrote:
>
> > > Now, see, if *I* were designing a processor, a reset (i.e. external
> > > or reset instruction) would clear the entire contents of memory.
>
> Luckily you don't, for this would kill some interesting applications,
> like the reset-pin interface (chip measures the time between reset, uses
> it as data input from user or maybe for bootloading or the like) and the
> watchdog-temperature sensor (measure watchdog timeout to determine die
> temperature).
>

Not to mention a reset used as high priority interrupt. Clearing RAM
kills the possibility of a post crash dump to analyze what happened.

w..

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