"outline-text-2" id="text-3">
<p>
There are four types of instructions:
</p>

<pre class="example">
instr %rA, %rB, %rC
instr %rA, %rB
instr %rA
instr
</pre>

<p>
There is only one instruction in the last category: <code>halt</code>.
</p>

<p>
All instructions are represented as 32-bit words:
</p>

<div class="org-src-container">

<pre class="src src-c" id="rabbitw_typedef">#ifndef RABBIT_TYPES_H
#define RABBIT_TYPES_H

#include &lt;inttypes.h&gt;

typedef uint32_t rabbitw;

#endif
</pre>
</div>

<p>
These 