title: How do I retrieve the sum of 2 large numbers?
body: <p>I am trying to add two numbers (lets say the first number = 200 and the second = 100). When I add them in AL, I get 2C in hex instead of 300. Is it because there's an overflow? and if that is the cause of it, how do I get the output from it? I read from several other posts but most of them deal with smaller numbers or use xor, which I didnt really understand why it is used at all. Answers are appreciated.</p>
  
  <p>Here's my code:</p>
  
  <pre><code>.model small          
  .stack 100
  .data
  
      No1 DB 200          ;First number 
      No2 DB 100
  
      Sum DW ?   
  
  .code  
  START: 
  
      MOV ax, @data
      MOV ds, ax
  
      MOV ax, 0
      MOV al, No1
      ADD al, No2 
  
  end start
  </code></pre>