TEMP	DC.B	1
Entry:LDS   #RAMEnd+1    	
	BSET	INTCR,#%01000000	
	CLR	TEMP			
	CLI				
	BSET	DDRB,%00010000	
	BCLR	PORTB,%00010000	
HERE	BRA	HERE			
IRQ_ISR
	LDAA	TEMP           
	EORA	#%00010000		
	STAA	TEMP			
	STAA	PORTB         	
	RTI				
   	ORG $FFF2
    	DC.W IRQ_ISR		
    	ORG   $FFFE
    	DC.W  Entry