hi,

I am working with AT89C51 Board.it has on board ADC.i have interfaced LM35 to analog input8.ADC part on my evalution board is same as typical application on ADC0808 datasheet.here decoder input is A0-A15.EOC is used as an external hardware interrupt.EOC is connected to p3.2 of the controller.A0,A1,A2 Select the analog input8.when i execute this, i couldn't get answer.i want to check this code is right or wrong.
can anyone help me ....

START:								   
        ORG 2000H	
	    LJMP MAIN			
	
	    ORG 2003H
	    MOV DPTR,#0001H
	    MOVX A,@DPTR		
	    RETI
	   		
	    ORG 2030H  
MAIN:  
	ACALL SERIAL
        MOV IE,#10000001B
	    SETB TCON.0
HERE:   MOV A,#07H
	    MOV DPTR,#0001H
	    MOVX @DPTR,A
		ACALL HEXTODEC
		ACALL DECTOASCII
        SJMP HERE
SERIAL:
        MOV TMOD,#20H
		MOV TH1,#0F6H
		MOV SCON,#50H
		SETB TR1
		RET  	  
HEXTODEC:	 
        MOV R0,#40H
	    MOV B,#10
	    DIV AB
	    MOV @R0,B
	    INC R0
	    MOV B,#10
	    DIV AB
	    MOV @R0,B
	    INC R0
	    MOV @R0,A
	    RET
DECTOASCII:    
        MOV R0,#42H
	    MOV R1,#3
H1:	    MOV A,@R0
	    ORL A,#30H
	    ACALL TX
	    DEC R0
	    DJNZ R1,H1
        RET 

TX:	    CLR TI
        MOV SBUF,A
L5:	    JNB TI,L5
	    RET
	    END