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On Thu, 23 Feb 2006, [ISO-8859-2] J=E1hn Bal=E1zs wrote:

> Bob Axtell wrote:
>
>> Another way to ask this question is to ask for an
>> '8-bit BIN to DEC' converter.
>
> I wasn't carefull, and I don't tell everything sorry.
>
> In my variable there are only  00h-63h (0d-99d). And I want divide it b=
y
> 10... I tought there is a very simple method, but I don't know it.

N/10 =3D N/8 - N/32 + N/128

 	; untested code, isochronous, 13 clocks (11 if FN_GT_127 is
 	; undefined)
 	; input is Fn, output is Fy, Fn emerges divided by four
 	swapf	Fn,w	; W =3D Fn/16
 	andlw	0x0F
 	movwf	Fy	; Fy =3D N/16
 	rrf	Fy,f	; Fy =3D N/32
 	comf	Fy,f
 	incf	Fy,f	; Fy =3D - N/32
#ifdef FN_GT_127
 	btfsc	Fn,7
 	incf	Fy,f	; Fy =3D - Fn/32 + Fn/128
#endif
 	rrf	Fn,f
 	rrf	Fn,f
 	rrf	Fn,w
 	andlw	0x1F	; W =3D Fn/8
 	addwf	Fy,f	; Fy =3D Fn/8 - Fn/32 + Fn/128

I am sure that one of the geniuses will optimize this.

Peter
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