LDS	#RAMEnd+1	
	LDAA #$FF		
	STAA	DDRB		
	LDAA #$00		
	STAA	DDRA		
	LDAA	#$0		
    	STAA SCI0BDH  	
	LDAA	#$0D		
    	STAA SCI0BDL	
    	LDAA #0	   	
    	STAA	SCI0CR1	
    	LDAA #$AC		
    	STAA	SCI0CR2	
	LDAA PORTA	
	STAA	SCI0DRL	
	CLI			
H1	STAA	PORTB	
	LDAA	PORTA	
	BRA	H1		
SCI0_ISR BRCLR	SCI0SR1,mSCI0SR1_TDRE,EXIT 
	LDAA PORTA
	STAA SCI0DRL
EXIT	RTI	
	ORG   $FFD6
	DC.W  SCI0_ISR
	ORG   $FFFE
	DC.W  Entry