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<h5 class="subsubsection">9.56.2.2 Register Names</h5>
<p><a name="index-Z80-registers-2686"></a><a name="index-register-names_002c-Z80-2687"></a>
The registers are referred to with the letters assigned to them by
Zilog. In addition <samp><span class="command">as</span></samp> recognizes &lsquo;<samp><span class="samp">ixl</span></samp>&rsquo; and
&lsquo;<samp><span class="samp">ixh</span></samp>&rsquo; as the least and most significant octet in &lsquo;<samp><span class="samp">ix</span></samp>&rsquo;, and
similarly &lsquo;<samp><span class="samp">iyl</span></samp>&rsquo; and &lsquo;<samp><span class="samp">iyh</span></samp>&rsquo; as parts of &lsquo;<samp><span class="samp">iy</span></samp>&rsquo;.
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