BCF	TRISB,4		
	BCF	PORTB,4		
	MOVLW	B'01111011'	
	MOVWF	T2CON			
	MOVLW	0x0			
	MOVWF	TMR2			
HERE	MOVLW	D'255'		
	MOVWF	PR2			
	BCF	PIR1,TMR2IF	
	BSF	T2CON,TMR2ON	
AGAIN	BTFSS	PIR1,TMR2IF	
	BRA	AGAIN			
	BTG 	PORTB,4		
	BCF 	T2CON,TMR2ON	
	BRA	HERE