> > No, that's so you can jump from the reset vector before the code hits
the
> > interrupt vector.  You need at least 3 instructions for this, two to set
> > PCLATH properly, and one GOTO.  I use the 4th instruction to make sure
> > interrupts are off so that a GOTO 0 (with PCLATH set appropriately of
> > course) performs a software reset.
>
> I know I'm probably having a complete blonde moment here, but it is my
> understanding that when at the reset vector, we know that PCLATH has to be
=
> 0, and the initialisation routine can always be placed within the first
page
> in program space. Hence, we can get by with a single GOTO at the reset
> vector address, which branches to somewhere within the first page.

True, but I like to let the linker put my startup module wherever it feels
like.  There is little point in economizing instructions after a restart,
and it would be hard to put the remaining locations before address 4 to a
useful purpose anyway.


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