My first assembly program

Bismillahir Rahmanir Rahim

Solution:

data segment
msg db "My first assembly program. $"
data ENDs
stack segment
db 100 Dup(0)
stack ENDs
code segment
Assume cs:code,ds:data,ss:stack
start:
 mov ax,seg data
 mov ds,ax
 mov ax,seg stack
 mov ss,ax

 mov dx,offset msg
 mov ah,09h
 int 21h

 mov ax,4c00h
 int 21h

code ENDs
End start