> > That is amazing, but I cleared the CVRCON register in my PORTA
> > initializing and the problem doesn=B4t happen more
>=20
> If CVRCON,CVREN and CVRCON,CVROE are set then you
> might expect to see CVref on RA2
>=20
> The POR state of CVRCON is 00000000. I don't recall ever having
> a problem with it, so can't explain why your CVRCON is not clear
> after a power-up or reset
>=20

If it suddenly works when you add code that should not matter (as in this c=
ase)=20
I would suspect that it is the actual moving of the rest of the code that=20
helped, which means that you still have a problem (it just doesn't show its=
elf=20
like it did before).=20

Try to add nop instructions instead of the code you added (to get the rest =
of=20
the code in the same place as it is now) and see if it still works.

If it still works check for things that could make the code "derail" - Stac=
k=20
overflow, jump instead of call to subroutines, missing ret in subroutine,=20
calculated goto jumping wrong, page switching (if it applies to the micro y=
ou=20
are using), missing to clear the WDT or even combinations of the above.

It can also mean that you have timer interrupts (or other interrupts for th=
at=20
matter) that occurs at different places in the code than before and if the=
=20
interrupt code doesn't play nicely with the rest of the code, this is what =
you=20
could see. By not playing nicely I mean not saving and restoring vital=20
registers/bits such as status register and bank and page bits, accessing th=
e=20
same variables in both non interrupt and interrupt code in a non interrupt =
safe=20
way, calling the same routines from the interrupt code as from non interrup=
t=20
code using local variables at the same register addresses and so on...

/Ruben
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D
Ruben J=F6nsson
AB Liros Electronic
Box 9124, 200 39 Malm=F6, Sweden
TEL INT +46 40142078
FAX INT +46 40947388
ruben@pp.sbbs.se
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D

--=20
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