ORL A,#0C0H             ;read mode
			MOV P2,A
			MOV P0,#0FFH    	;P0 INPUT PORT
			MOV R2,P0               ;reading from  
                                                ;slave       
			MOV P0,#0FFH
			MOV A,R1      	
			ORL A,#0E0H             ;write mode
			MOV P2,A			
									
			MOV A,R1
			CALL DISPLAY_DATA