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Binary to BCD with Assembly

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mpch_elec

mpch_elec

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hi friends,
I want to convert binary to BCD with assembly language.
my processor is AVR-Atmega 32.
Thanks.:???:
 

8 bit or 16 bit?

here is an 8 bit routine:
Code: 
;*****************************************************
;* "bin2BCD8" - 8-bit Binary to BCD conversion
;* This subroutine converts an 8-bit number (temp) to a 2-digit 
;* i.e 0x15 becomes 0x21
;* result in temp
;**********************************************************
;.def	tBCD	= r21			;add this to main asm file
;
bin2bcd8:
	clr	tBCD			;clear temp reg
bBCD8_1:
	subi	Temp,10		;input = input - 10
	brcs	bBCD8_2		;abort if carry set
	subi	tBCD,-$10 		;tBCD = tBCD + 10
	rjmp	bBCD8_1		;loop again
bBCD8_2:
	subi	Temp,-10		;compensate extra subtraction
	add	Temp,tBCD	
	ret
 

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