Ian Hynes wrote:
>

>         movf      FSR_,0
>         movwf     FSR
>         movf      PCLATH_
should be movf      PCLATH_,0
if not, it just movf the file into itself (default is 1). So you are
actually loading PCLATH with the value from FSR (value in w), which
could be the wrong value.
Also, if you use the pic16f87x.inc file, rather use w for 0 and f for 1,
not so confusing.
>         movwf     PCLATH
>         movf      STATUS_,0      ;Return from interrupt
>         movwf     STATUS
>         swapf     w_             ;Flip & load the w register
>         swapf     w_,w           ;without affecting the STATUS reg.
>         retfie

Quentin

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