On Wed, Feb 22, 2006 at 02:50:53PM +0100, J?hn Bal?zs wrote:
> Hi,
> 
> I want a 8 bit number divide by 10 (ten).
> I need the quotient and the remain.
> 
> Which is the fastest ASM code for pic 16f877?

Simple. Table lookup. Costs 512 instructions for the RETLWs and 2 or so
instructions for the setup for the jump. Something along the lines of:

	org	0x01ff		; Start on instruction short of 256 instruction
				; boundary. How can this be done in a
				; relocatable fashion?
div10q: addwf	PCL,F
	retlw	0		; 0/10 = 0
	retlw	0		; 1/10 = 0
; ... up to 9 then
	retlw	1		; 10/10 = 1
	retlw	1		; 11/11 = 1

and so forth.

BAJ
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