ORG	0000H
	GOTO	MAIN			
	ORG	0008H			
	BTFSS INTCON,INT0IF	
	RETFIE			
	GOTO  INT0_ISR		
	ORG	00100H	
MAIN BCF  TRISB,7		
	BSF TRISB,INT0		
	CLRF TRISD			
	SETF TRISC			
	BSF INTCON,INT0IE	
	BSF INTCON,GIE		
OVER	MOVFF PORTC,PORTD 	
	BRA OVER			
INT0_ISR
	ORG 200H
	BTG PORTB,7		
	BCF INTCON,INT0IF 	
	RETFIE			
	END