TEMP	DC.B	1
Entry:LDS	#RAMEnd+1     	
	BSET	INTCR,%11000000	
	CLR	TEMP
	CLI				
	BSET	DDRB,%00010000	
	BCLR	PORTB,%00010000	
HERE	BRA	HERE			
IRQ_EDGE
	LDAA	TEMP          	
	EORA	#%00010000		
	STAA	TEMP			
	STAA	PORTB         	
	RTI				
    	ORG	$FFF2
    	DC.W	IRQ_EDGE		
    	ORG  	$FFFE
    	DC.W	Entry