ORG	0
		MOV	DPTR,#300H	
		MOV	A,#0FFH		
		MOV	P1,A			
BACK:	MOV	A,P1			
		MOVC	A,@A+DPTR		
		MOV	P2,A			
		SJMP	BACK			
		ORG	300H
XSQR_TABLE:
		DB	0,1,4,9,16,25,36,49,64,81
		END