title: Intel instruction set: multiply with EAX, EBX, ECX or EDX?
body: <p>How do you suppose to know that when 'mul ecx' was executed. ECX would be multiplied with EAX? And not with EBX or EDX?</p>
  
  <pre><code>mul ecx, eax
  </code></pre>
  
  <p>would make more sense though.</p>