On Sun, 3 May 1998, Paul B. Webster VK2BZC wrote:

>   If you are using fixed subtractions rather than shifts, and since each
> "IF" is coded <skip conditional> <GOTO else code> <IF code> (<GOTO ...>)
> <else code> then the one-instruction-less optimisation of the above is:
>
 <snip>
>
>   FWIW!

about 33 instructions. However, to up the 1-byte less ante, there's a
trick that allows you to use binary comparisons for a 28-cycle conversion.
I divulge those tricks tomorrow...

However for the decimal version, this little trick works well:

        MOVF    bin,W

        ADDLW   -200
        RLF     tens_and_ones,F   ;Get the (inverted) carry
        BTFSS   tens_and_ones,0   ;If there was no carry
         ADDLW  200               ;put back the 200

        . . .

   Followed later by a COMF (or some other bit inverting trick) to get
the proper polarity.

Scott