5.3.3双字节定点数转换成格式化浮点数.txt

MCS-51单片机应用开发实用子程序

FXDTOFLT:  
MOV 	R2,A 			
MOV 	A,@R0 			
MOV 	R3,A
INC 		R0
MOV 	A,@R0
MOV 	R4,A
DEC 	R0
FLTRLN: 					
MOV 	A,R3 
ORL 	A,R4 			
JNZ 		RLN1
MOV 	R2,#0C1H			
RET 
RLN1: 
MOV 	A,R3
JB 		ACC.7,RLN2		
CLR 	C 				
LCALL 	RL1
SJMP 	FLTRLN 			
RLN2: 
CLR 	OV 				
LJMP 	MOV0 			
RET