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  <title>TI-73 Link Protocol Guide - Remote Control</title>
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<b>TI-73 Link Protocol Guide</b> - Remote Control
<center>
<h2>
<hr align="center">Remote control</h2>
</center>
The TI-73's remote control ability is "silent," which means that the
calculator
does not need to be put in a special mode. The remote control ability
can
be utilized any time the calculator is ready to accept a keypress.
<p><b><u>Remote command:</u></b>
</p>
<p>The protocol used for sending a remote command is shown below.
<table bgcolor="#ffffff" border="1" cellspacing="0" width="92%">
  <tbody>
    <tr>
      <th bgcolor="#008800" width="7%"><font color="#ffffff">Step</font></th>
      <th colspan="3" bgcolor="#008800"><font color="#ffffff">Direction</font></th>
      <th bgcolor="#008800" width="80%"><font color="#ffffff">Packet</font></th>
    </tr>
    <tr>
      <td bgcolor="#ffffff" width="7%">
      <center>1&nbsp;</center>
      </td>
      <td rowspan="2">
      <center><img src="graphics/comp.gif" alt="Computer" align="bottom"
 border="0" height="33" width="30"></center>
      </td>
      <td bgcolor="#ffffff">
      <center><img src="graphics/right.gif" alt="===&gt;" align="bottom"
 border="0" height="13" width="22"></center>
      </td>
      <td rowspan="2" bgcolor="#ffffff">
      <center><img src="graphics/calc.gif" alt="Calculator"
 align="bottom" border="0" height="35" width="60"></center>
      </td>
      <td bgcolor="#ffffff" width="80%">CMD</td>
    </tr>
    <tr>
      <td bgcolor="#ffffff" width="7%">
      <center>2&nbsp;</center>
      </td>
      <td bgcolor="#ffffff">
      <center><img src="graphics/left.gif" alt="&lt;===" align="bottom"
 border="0" height="13" width="22"></center>
      </td>
      <td bgcolor="#ffffff" width="80%">ACK</td>
    </tr>
  </tbody>
</table>
</p>
<p>The scancode of the key is sent in the last two bytes of the
command.
Scancodes are defined in the section ?? TI-73 guidebook or can be
found
in the TI83+ FLASH SDK (ti73.inc).
</p>
<p><u>Example:</u>
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    <tr>
      <td bgcolor="#ccffcc">PC:</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>07 87 9B 00</tt></b></td>
      <td bgcolor="#ccffcc" width="50%"><i>Command: Key &lt;B&gt;</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">TI:</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>74 56 9B 00</tt></b></td>
      <td bgcolor="#ffcccc" width="50%"><i>Acknowledgement of command</i></td>
    </tr>
  </tbody>
</table>
</p>
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<hr align="center"><i>Site maintained by Romain Li&eacute;vin (<a
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