I think you need to make sure you are on the right page to write to the
OPTION register.
trond
>
> I'm trying to use the watchdog timer on a PIC16C63.
>
> How do I turn it on?
>
> So far I'm able to write to the options register as follows:
>
> movlw   b'00001111'   ; Program WDT to 128 * .018ms = 2.3 seconds
> movwf   81h
>
> Note: For some reason I couldn't write to OPTION, the assembler did not
> recognize this word.
>
> I have a main loop in my program where I plan on inserting a
>
> CLRWDT
>
> to reset the watchdog....unless I"m missing a real obvious one, I can't
> figure out how to start this
> thing ticking!!
>
> Thanks in advance....