> >
> >Note: For some reason I couldn't write to OPTION, the assembler did not
> >recognize this word.
> >
>
>
>
> movlw   b'00001111'   ; Program WDT to 128 * .018ms = 2.3 seconds
> option
>

Microchip advises against using the OPTION instruction because it may
be discontinued.

The compiler would complain about MOVWF OPTION because OPTION is an
instruction mnemonic.

Try this..

option_reg  equ 0x81   ; or 0x01 it doesn't matter

bsf status,rp0
movlw b'00001111'
movwf option_reg
bcf status,rp0

Tony


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