> 3) Lookahead table (16 bytes of nibbles):
>     1 instruction to set the lookahead base address
>     1 instruction to save the original byte
>     1 instruction to AND the original byte lower nibble
>     1 instruction to get the table nibble
>     1 instruction to save this table byte
>     1 instruction to retrieve the original byte
>     1 instruction to swap original byte nibbles
>     1 instruction to AND the original byte lower nibble
>     1 instruction to get the table nibble
>     1 instruction to OR with previous table nibble
>     1 instruction to swap final byte nibbles
>          Total Program Instructions: 11 + 16 (table)
>          Total Instructions Executed: 11

I made it  Total Program Instructions: 7 + 19 (table)
              &Total Instructions executed: 7

eg.

        movf    original,w
        call      rev_nibble
        movwf result
        swapf     result,f
        swapf     original,w
        call      rev_nibble
        iorwf    result,f

  rev_nibble
        andlw    0x0F
        addwf    pcl,f
        retlw       00
        retlw       08

            ....etc...

Thanks for all the suggestions..

jim