title: Assembly byte ptr meaning
body: <p>In <code>ecx</code> I have some string, like <code>&quot;abc&quot;</code>.</p>
  <pre><code>mov ah, BYTE PTR [ecx+0]
  mov al, BYTE PTR [ecx+1]
  </code></pre>
  <p>What does it exactly do? It's like in <code>ah</code> I have <code>&quot;a&quot;</code> and in <code>al</code> I have <code>&quot;b&quot;</code>?</p>