title: The difference between 'ADD' and 'DADD'
body: <p>What is the difference between '<code>ADD</code>' and '<code>DADD</code>' <code>MIPS</code> instructions? </p>
  
  <p>I know that '<code>DADD</code>' stands for Double Word Add but I do not know the difference between '<code>ADD</code>' and '<code>DADD</code>'. </p>
  
  <p>Moreover, it appears that both instructions have the same syntax, </p>
  
  <p>e.g.,</p>
  
  <pre><code>ADD R1, R0, R0
  DADD R1, R0, R0
  </code></pre>