At 10:42 1996-06-19 +0100, Harry wrote:

>Does anybody have a routine for implementing bit reversal ?
>i.e. 11000000 to be converted to 00000011
>
>I need the source to be in some file register TEMP. A subroutine will be
>called and TEMP will return the reversed value.
>

How about




        movlw   8
        movwf   count

next_bit:
        rrf     temp, f     ;rotate through Carry
        rlf     temp_r, f
        decfsz  count, f
        goto    next_bit

        movf    temp_r, w
        movwf   temp



/Adrian