Displaying Message

Title "EXP. 4 - program 1"       
;This programs displays a string terminated by a $ sign using 21H function 09H

.MODEL SMALL

.DATA
    MESSAGE DB 'This is the message to be displayed','$' 
     
.STACK 200 

.CODE
    MOV AX, @DATA
    MOV DS,AX
    MOV DX, OFFSET MESSAGE
    MOV AH,09H
    INT 21H
    MOV AX,4C00H
    INT 21H
END     
;Character input with INT 21H, function call 01H
;Character input wothout echo INT 21H, function call 08H