BCF TRISB,0			
	BCF TRISB,2			
	BCF TRISB,3			
	BSF TRISD,7			
MONITOR:
	BTFSS PORTD,7
	BRA CLOCKWISE
	BSF PORTB,0			
	BCF PORTB,1			
	BCF PORTB,2			
	BSF PORTB,3			
	BRA MONITOR
CLOCKWISE:
	BCF PORTB,0			
	BSF PORTB,1			
	BSF PORTB,2			
	BCF PORTB,3			
	BRA MONITOR