ORG	00H
	JMP	MAIN
	ORG	003H
	JMP	INT_0
MAIN:
	MOV	R7,#00H
	SETB	IT0
	MOV	IE,#89H
	MOV	DPTR,#TABLE
	JMP	MAIN

CLRR2:
	MOV	R2,#00H
LOOP:
	MOV	A,R2
	MOVC	A,@A+DPTR
	MOV	P1,A
	CALL	DELAY
	INC	R2
	CJNE	R2,#10,LOOP
	JMP	CLRR2
INT_0:
	INC	R7
SE1:
	CLR	P3.4
	CJNE	R7,#01H,SE2
	JMP	CLRR2
SE2:
	CLR	P3.5
	CJNE	R7,#02H,SE3
	JMP	SE2
		
SE3:
	CLR	P3.7
	CJNE	R7,#03H,SE1
	CLR	R7
	RETI
DELAY:
	MOV	R4,#20
	MOV	TMOD,#00000001B
TIMER:
	MOV	TH0,#3CH
	MOV	TL0,#0B0H
	SETB	TR0
WAIT:
	JB	TF0,OK
	AJMP	WAIT
OK:
	CLR	TF0
	DJNZ	R4,TIMER
	RET
TABLE:
	DB	00H
	DB	01H
	DB	02H
	DB	03H
	DB	04H
	DB	05H
	DB	06H
	DB	07H
	DB	08H
	DB	09H
 	RET
	END