BHD2: 
MOV 	R6,#10H 				
BHD3:
MOV 	A,R5 				
ADD 	A,R5 
DA 		A 
MOV 	R5,A 
MOV 	A,R4 
ADDC 	A,R4 
DA A 
MOV 	R4,A 
MOV 	A,R3 				
RLC 	A 
MOV 	R3,A 
MOV 	A,R2 
RLC 	A 
MOV 	R2,A 
DJNZ 	R6,BHD3 				
MOV 	A,R4 
ADD 	A,#0B0H 				
JNC 		BHD4 				
INC 		R3 				
MOV 	A,R3 
JNZ 		BHD4 
INC 		R2 
BHD4: 
RET