<p>Prohibited Calculators</p>
<p>These types of calculators are prohibited:</p>
<pre><code>* Texas Instruments: all model numbers that begin with TI-89 and TI-92, and the TI–Nspire CAS—The TI–Nspire (non-CAS) is permitted."
</code></pre>
<p>TI-89 is listed as a prohibited Calculator. If you don’t believe me look at the link I posted.</p>