Vladimir M. Klochko wrote:
>     First of all, "18 cycles" is not quite true. :)
> Since You use RETLW for some special case of input You must add
> a RETURN to this code for any other cases. Of course, my
> examples don't contain these RETURN's at all, but I don't imply


Oh. Okay

        CLRF    qh
        ADDLW   1
        MOVWF   ql

        RLF     qh,F
        RLF     ql,W
        RLF     qh,F

        ADDWF   ql,F

        BTFSS   qh,1
         SKPNC
          INCF   qh,F

        SWAPF   qh,W
        ADDWF   qh,F

        SWAPF   ql,W
        ANDLW   0xF
        ADDWF   ql,F
        SKPNDC
         INCF   qh,F

        ADDWF   qh,W