BCLR	DDRT,%00000001	
	BSET  DDRB,%00010000  	
	LDAA 	#%01000000		
	STAA	PBCTL
	LDAA  #%00000001    	
	STAA  TCTL4		
OVER	LDD	#$FFF6    
	STD	PACN10		
	BCLR	PORTB,%00010000	
HERE	BRCLR	PBFLG,mPBFLG_PBOVF,HERE	
	BSET	PBFLG,mPBFLG_PBOVF
	BSET	PORTB,%00010000	
	BRA	OVER