I wonder if is possible to rotate a 1 in a nibble with out an auxiliary
register and without change the other nibble. This is my approach with a
temporary register, rotating the high.

       movfw   Reg         ;Reg= 0001.efgh
       andlw   0xf0        ;
       movwf   Tmp         ;
       rlf     Tmp,F       ;
       btfsc   STATUS,C    ;
       bsf     Tmp,4       ;
       movlw   0x0f        ;Clean before write
       andwf   Reg,F       ;
       movfw   Tmp         ;
       iorwf   Reg ,F      ;Reg= 0010.efgh

Dennis

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