1.5.2 双字节开方.txt

数值算法,C51单片机的汇编程序

DUSQR:		
MOV	R2,#00H				
LP:			
MOV	A,R2					
ADD		A, R2
MOV	R7, #00H
XCH		A, R7				
ADDC	A, #00H
XCH		A, R7
ADD		A, #01H
XCH		A, R7
ADDC	A, #00H
XCH		A, R7
MOV	R6, A
CLR		C					
MOV	A, R5				
SUBB	A, R6
MOV	R5, A
MOV	A, R4				
SUBB	A, R7
MOV	R4, A
JC		RETURN
INC		R2				
SJMP	LP
RETURN:	
RET