ORG	0000H
	GOTO	MAIN		
	ORG	0008H		
	BTFSS INTCON,TMR0IF	
	RETFIE			
	GOTO  T0_ISR		
	ORG	00100H	
MAIN	BCF  TRISB,5	
	CLRF TRISD		
	SETF TRISC		
	
	MOVLW 0x08		
				
	MOVWF T0CON	
	MOVLW	 0xFF		
	MOVWF	 TMR0H	
	MOVLW	 0xF2		
	MOVWF TMR0L	
	BCF INTCON,TMR0IF
	BSF T0CON,TMR0ON		
	BSF INTCON,TMR0IE	
	BSF INTCON,GIE	
OVER	MOVFF PORTC,PORTD 
	BRA OVER			
T0_ISR
	ORG 200H
	MOVLW	 0xFF		
	MOVWF	 TMR0H	
	MOVLW	 0xF2		
	MOVWF TMR0L	
	BTG	PORTB,5	
	BCF INTCON,TMR0IF 
EXIT	RETFIE 
	END