 the
interpreter into a debug state when executed.
</p>
<pre class="mendoza-codeblock"><code>X - Payload bits
O - Opcode bits

   4    3    2    1
+----+----+----+----+
| XX | XX | XX | OO |
+----+----+----+----+</code></pre><p>Using 8 bits for the opcode leaves 24 bits for the payload, which may or may
not be utilized.  There are a few instruction variants that divide these
payload bits.
</p>
<ul><li>0 arg - Used for noops, returning <code class="mendoza-code">nil</code>, or other instructions that
       