>Hello!
>
>Is there a simple way to Divide an 8 or 16 bit # by 47 that doesn't take
>10,000 instructions (slight exaggeration)? I don't need a lot of accuracy.

Yes there is...

Here's a routine from Bob Fehrenbach that should do the trick.

I will be putting this on my web page along with a number of other 16 bit
routines for the PIC.

myke

;*******************************************************************
;  Divide 16 bits by 8 bits, 16 bit result, 8 bit remainder.
;  Conventional shift and subtract
;
;  q_2 : q_1 / n_1  -> q_2:q_1, rem in t_1
;
;  Uses count, t_2
;  Program memory: 16
;  231 clock cycles.
;  Source: Bob Fehrenbach
;*******************************************************************

div16b8: macro
   local loop
   clrf    t_1
   movlw   16
   movwf   count
loop:
   rlf     q_1, f
   rlf     q_2, f
   rlf     t_1, f
   rlf     t_2, f
   movf    n_1, w
   subwf   t_1,w
   btfss   t_2, 0
   skpnc
   movwf   t_1
   btfsc   t_2, 0
   rrf     t_2, f
   decfsz  count, f
   goto    loop
   rlf     q_1, f
   rlf     q_2, f

   endm

PICLite has been upgraded!  Check out version 2.00a at:

http://www.myke.com/piclite

PICLite now includes a Macro Processor that allows structured programming
language constructs ("if/else/end", "while/end" and "for/end").

Look in on the life of the Rabitte family in Dublin; Roddy Doyle's
"Barrytown Trilogy" in the Book Room this week,

http://www.myke.com/Book_Room