>I want to change   b7 b6 b5 b4 b3 b2 b1 b0   to  b0
b1 b2 b3 b4 b5 b6 b7.
>
>Quickest & most code efficient??

How about this... (John Payson)

        movwf   source
        btfsc   source,0
         xorlw  h'41'
        btfsc   source,6
         xorlw  h'41'
        btfsc   source,1
         xorlw  h'22'
        btfsc   source,5
         xorlw  h'22'
        btfsc   source,2
         xorlw  h'14'
        btfsc   source,4
         xorlw  h'14'

Why waste time on lookup tables? Each access is a 6
cycle hit.

.lo

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