ORG	$8000		
	BSET	 DDRB,%11111111	
	LDX	 #MYDATA	
B2	LDAA	 0,X 		
	BEQ	 OVER		
	STAA	 PORTB	
	INX	 		
	BRA	B2
OVER	BRA	 OVER		
	ORG	$8500		
MYDATA DC.B	"USA",0 	
	END