ORG	0
 	LJMP	MAIN		
 	ORG 	03
 	LJMP ISR_EX0	
 	ORG 	100H
MAIN: 		
	MOV 	IE,#81H	
	SETB	TCON.1  	
	MOV	TMOD,#20H	
	MOV 	SCON,#50H
	MOV 	TH1,#-3 	
	SETB TR1
	MOV 	R0,#10 	
	MOV 	A,#2DH 	
	MOVX	@R0,A 	
	MOV 	R0,#11 	
   	MOV 	A,#83H  	
   	ACALL DELAY
   	MOVX	@R0,A  	
   	ACALL DELAY
	PLACE THE CODE HERE
	MOV 	R0,#1    	
   	MOV	A,#08 	
	MOVX	@R0,A  	
 	MOV 	R0,#3  	
	MOV 	A,#0FFH 	
   	MOVX	@R0,A  	
   	MOV 	R0,#5	
	MOV 	A,#0FFH 	
   	MOVX	@R0,A  	
	ACALL DELAY 
   	MOV 	R0,#11 	
	MOV 	A,#23H  	
   	MOVX	@R0,A  	
	PLACE READING TIME CODE HERE
SERIAL:
	CLR	IE.7 	
	MOV 	SBUF,A
S1:	JNB 	TI,S1
	CLR 	TI
	SETB	IE.7  	
	RET
	ORG 500H		
ISR_EX0:
	MOV 	R0,#12 	
	ACALL DELAY
	MOVX	A,@R0  
	MOV 	R0,#11 	
	ACALL DELAY 
   	MOVX	A,@R0
   	ACALL DELAY
	SETB	ACC.3	
   	SETB	P1.7	
   	ACALL DELAY
   	MOVX	@R0,A  	
	MOV 	A,#'Y'
	ACALL SERIAL
	MOV 	A,#'E'
	ACALL SERIAL
	MOV 	A,#'S'
	ACALL SERIAL
	ACALL DELAY_1 	
	MOV 	R0,#11 	
	ACALL DELAY 
   	MOVX	A,@R0
   	CLR	ACC.3  	
   	ACALL DELAY 	
   	MOVX	@R0,A	
   	CLR	P1.7   	
    	RETI