.model medium
                .stack 100h           ;setup stack segment

        ;; add four bytes 
                .data
	
	FOUR_NO	DB 12H,0B5H,6CH,78H
	SUM	DB    ?
	
	        .code
	
	
	START:	MOV AX, @DATA
		MOV DS,AX
	        MOV AL, FOUR_NO
                MOV AL, FOUR_NO+1
	        MOV AL, FOUR_NO+2
                MOV AL, FOUR_NO+3
		MOV SUM,AL	;store result in SUM
		MOV AX,4C00H		;set up return
		INT 21H		;invoke interrupt

	END START


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