2.4.1双字节无符号数除法.txt

里面有好多的原码,大家都来下载.用asm编写的

DIVD: 
CLR		C 			
MOV 	A,R3  
SUBB 	A,R7 
MOV 	A,R2 
SUBB 	A,R6 
JC 		DVD1 
SETB 	OV 				
RET 
DVD1: 
MOV 	B,#10H 			
DVD2: 
CLR 	C 				
MOV 	A,R5 
RLC 	A 
MOV 	R5,A 
MOV 	A,R4 
RLC 	A 
MOV 	R4,A 
MOV 	A,R3 
RLC 	A 
MOV 	R3,A 
XCH 	A,R2 
RLC 	A 
XCH 	A,R2 
MOV 	F0,C 			
CLR 	C 
SUBB 	A,R7 			 
MOV 	R1,A 
MOV 	A,R2 
SUBB 	A,R6 
ANL 	C,/F0 			
JC 		DVD3 
MOV 	R2,A 			
MOV 	A,R1 
MOV 	R3,A 
INC 		R5 				
DVD3: 
DJNZ 	B,DVD2 			
MOV 	A,R4 			
MOV 	R2,A 
MOV 	A,R5 
MOV 	R3,A 
CLR 	OV 				
RET