BCF 	TRISB,7		
MOVLW	0x06			
HERE	MOVLW	0xFF			
MOVWF	TMR0H			
MOVLW	0x3D			
MOVWF	TMR0L			
BCF	INTCON, TMR0IF	
BTG	PORTB,7		
BSF 	T0CON, TMR0ON	
AGAIN	BTFSS	INTCON, TMR0IF	
BRA	AGAIN			
BCF	T0CON, TMR0ON 	
BRA	HERE