title: What is the difference - MOV instruction
body: <p>I've started to learn asm, and I wondered what is the difference between these two different ways of using the <code>MOV</code> instruction into <code>AL</code>:</p>
  
  <p>First:</p>
  
  <pre><code>MOV AL,5H
  </code></pre>
  
  <p>Second:</p>
  
  <pre><code>MOV SI,5H
  MOV AL,[SI]
  </code></pre>