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tibasicc


			
				
					
						
						
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							<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<html>
<head>
  <meta name="GENERATOR" content="Visual Page 1.0 for Windows">
  <meta http-equiv="Content-Type" content="text/html;CHARSET=iso-8859-1">
  <title>TI-83 Link Protocol Guide - Backup Transfers</title>
</head>
<body bgcolor="#ffffe8">
<p><b>TI-83 Link Protocol Guide v1.0</b> - System Backup Transfers</p>
<center>
<h2>
<hr align="center">System Backup Transfers</h2>
</center>
<p>A System Backup is one large transmission containing all
user-modifiable data in the calculator. The file format
that the TI-83 Graph Link software uses can be found in the <a
 href="fformat.html#backup">file formats</a> section
of this documentation.</p>
<p>System backups can either be transferred manually or silently.
Manual transfers require both the sending and
the receiving units to be put into a special transfer mode. Silent
transfers can only be done between a computer
and a calculator, and require that the computer make the <a
 href="#request">request</a> or <a href="#rts">request-to-send</a>.</p>
<p>The protocol for manual system backup transfers is shown below. For
information on packet formats, <a href="packet.html">click
here</a>.</p>
<p>A computer can be either the sending unit or the receiving unit.</p>
<p>
<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%">
      <p align="center">1 </p>
      </td>
      <td rowspan="10">
      <p align="center"><img src="graphics/calc.gif" alt="Sending Unit"
 align="bottom" border="0" height="67" width="30"> </p>
      </td>
      <td bgcolor="#ffffff" width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td rowspan="10">
      <p align="center"><img src="graphics/calc.gif"
 alt="Receiving Unit" align="bottom" border="0" height="67" width="30">
      </p>
      </td>
      <td bgcolor="#ffffff" width="80%">VAR with <a
 href="packet.html#backup">backup-style header</a> and type ID = 0x13.</td>
    </tr>
    <tr>
      <td bgcolor="#ffffff" width="7%">
      <p align="center">2 </p>
      </td>
      <td bgcolor="#ffffff" width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td bgcolor="#ffffff" width="80%">ACK</td>
    </tr>
    <tr>
      <td bgcolor="#ffffff" width="7%">
      <p align="center">3 </p>
      </td>
      <td bgcolor="#ffffff" width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td bgcolor="#ffffff" width="80%">CTS or SKIP/EXIT. If exit, do
step 4 and quit.</td>
    </tr>
    <tr>
      <td bgcolor="#ffffff" width="7%">
      <p align="center">4 </p>
      </td>
      <td bgcolor="#ffffff" width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td bgcolor="#ffffff" width="80%">ACK</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">5 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">DATA - section 1 (system data)</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">6 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">ACK</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">7 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">DATA - section 2 (user data)</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">8 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">ACK</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">9 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">DATA - section 3 (variable table?)</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">10 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">ACK</td>
    </tr>
  </tbody>
</table>
</p>
<p></p>
<p><u>Example (PC sending backup to TI):</u><br>
<table border="0" cellspacing="0" width="100%">
  <tbody>
    <tr>
      <td bgcolor="#ccffcc">PC:</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;06&nbsp;09&nbsp;00&nbsp;</tt></b><tt>C0&nbsp;0D&nbsp;13&nbsp;29&nbsp;5C&nbsp;55&nbsp;01&nbsp;27&nbsp;93&nbsp;<b>75&nbsp;02</b></tt></td>
      <td bgcolor="#ccffcc" width="50%"><i>Variable header: Backup</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">TI:</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;56&nbsp;09&nbsp;00</tt></b></td>
      <td bgcolor="#ffcccc" width="50%"><i>Acknowledgement of header</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">&nbsp;</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;09&nbsp;00&nbsp;00</tt></b></td>
      <td bgcolor="#ffcccc" width="50%"><i>Clear to send backup</i></td>
    </tr>
    <tr>
      <td bgcolor="#ccffcc">PC:</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;56&nbsp;00&nbsp;00</tt></b></td>
      <td bgcolor="#ccffcc" width="50%"><i>Acknowledgement of CTS</i></td>
    </tr>
    <tr>
      <td bgcolor="#ccffcc">&nbsp;</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;15&nbsp;C0&nbsp;0D&nbsp;</tt></b>&lt;DC0h&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</td>
      <td bgcolor="#ccffcc" width="50%"><i>Backup data section 1
(system data)</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">TI:</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;56&nbsp;C0&nbsp;0D</tt></b></td>
      <td bgcolor="#ffcccc" width="50%"><i>Acknowledgement of data</i></td>
    </tr>
    <tr>
      <td bgcolor="#ccffcc">PC:</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;15&nbsp;29&nbsp;5C&nbsp;</tt></b>&lt;5C29h&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</td>
      <td bgcolor="#ccffcc" width="50%"><i>Backup data section 2 (user
data)</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">TI:</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;56&nbsp;29&nbsp;5C</tt></b></td>
      <td bgcolor="#ffcccc" width="50%"><i>Acknowledgement of data</i></td>
    </tr>
    <tr>
      <td bgcolor="#ccffcc">PC:</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;15&nbsp;55&nbsp;01&nbsp;</tt></b>&lt;155h&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</td>
      <td bgcolor="#ccffcc" width="50%"><i>Backup data section 3
(variable table?)</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">TI:</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;56&nbsp;55&nbsp;01</tt></b></td>
      <td bgcolor="#ffcccc" width="50%"><i>Acknowledgement of data</i></td>
    </tr>
  </tbody>
</table>
</p>
<p></p>
<h3>
<hr align="center">Silent Backup Transfers</h3>
<p><a name="request"></a>The protocol for silently requesting and
receiving a backup is described below:</p>
<p>
<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%">
      <p align="center">1 </p>
      </td>
      <td rowspan="12">
      <p align="center"><img src="graphics/comp.gif" alt="Computer"
 align="bottom" border="0" height="33" width="30"> </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td rowspan="12">
      <p align="center"><img src="graphics/calc.gif" alt="Calculator"
 align="bottom" border="0" height="67" width="30"> </p>
      </td>
      <td width="80%">REQ with 11-byte variable header and type ID =
0x13 (all other fields contain 0h bytes).</td>
    </tr>
    <tr>
      <td bgcolor="#ffffff" width="7%">
      <p align="center">2 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">ACK</td>
    </tr>
    <tr>
      <td bgcolor="#ffffff" width="7%">
      <p align="center">3 </p>
      </td>
      <td bgcolor="#ffffff" width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td bgcolor="#ffffff" width="80%">VAR with <a
 href="packet.html#backup">backup-style header</a> and type ID = 0x13.</td>
    </tr>
    <tr>
      <td bgcolor="#ffffff" width="7%">
      <p align="center">4 </p>
      </td>
      <td bgcolor="#ffffff" width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td bgcolor="#ffffff" width="80%">ACK</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">5 </p>
      </td>
      <td bgcolor="#ffffff" width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td bgcolor="#ffffff" width="80%">CTS or SKIP/EXIT. If exit, do
step 4 and quit.</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">6 </p>
      </td>
      <td bgcolor="#ffffff" width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td bgcolor="#ffffff" width="80%">ACK</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">7 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">DATA - section 1 (system data)</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">8 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">ACK</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">9 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">DATA - section 2 (user data)</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">10 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">ACK</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">&nbsp; </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">DATA - section 3 (variable table?)</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">&nbsp; </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">ACK</td>
    </tr>
  </tbody>
</table>
</p>
<p></p>
<p><u>Example:</u><br>
<table border="0" cellspacing="0" width="100%">
  <tbody>
    <tr>
      <td bgcolor="#ccffcc">PC:</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;A2&nbsp;0B&nbsp;00&nbsp;</tt></b><tt>00&nbsp;00&nbsp;13&nbsp;00&nbsp;00&nbsp;00&nbsp;00&nbsp;00&nbsp;00&nbsp;00&nbsp;00&nbsp;<b>13&nbsp;00</b></tt></td>
      <td bgcolor="#ccffcc" width="50%"><i>Request backup</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">TI:</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;56&nbsp;0B&nbsp;00</tt></b></td>
      <td bgcolor="#ffcccc" width="50%"><i>Acknowledgement of request</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">&nbsp;</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;06&nbsp;09&nbsp;00&nbsp;</tt></b><tt>C0&nbsp;0D&nbsp;13&nbsp;29&nbsp;5C&nbsp;55&nbsp;01&nbsp;27&nbsp;93&nbsp;<b>75&nbsp;02</b></tt></td>
      <td bgcolor="#ffcccc" width="50%"><i>Variable header: Backup</i></td>
    </tr>
    <tr>
      <td bgcolor="#ccffcc">PC:</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;56&nbsp;00&nbsp;00</tt></b></td>
      <td bgcolor="#ccffcc" width="50%"><i>Acknowledgement of header</i></td>
    </tr>
    <tr>
      <td bgcolor="#ccffcc">&nbsp;</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;09&nbsp;00&nbsp;00</tt></b></td>
      <td bgcolor="#ccffcc" width="50%"><i>Clear to send backup</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">TI:</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;56&nbsp;00&nbsp;00</tt></b></td>
      <td bgcolor="#ffcccc" width="50%"><i>Acknowledgement of CTS</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">&nbsp;</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;15&nbsp;C0&nbsp;0D&nbsp;</tt></b>&lt;DC0h&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</td>
      <td bgcolor="#ffcccc" width="50%"><i>Backup data section 1
(system data)</i></td>
    </tr>
    <tr>
      <td bgcolor="#ccffcc">PC:</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;56&nbsp;00&nbsp;00</tt></b></td>
      <td bgcolor="#ccffcc" width="50%"><i>Acknowledgement of data</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">TI:</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;15&nbsp;29&nbsp;5C&nbsp;</tt></b>&lt;5C29h&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</td>
      <td bgcolor="#ffcccc" width="50%"><i>Backup data section 2 (user
data)</i></td>
    </tr>
    <tr>
      <td bgcolor="#ccffcc">PC:</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;56&nbsp;00&nbsp;00</tt></b></td>
      <td bgcolor="#ccffcc" width="50%"><i>Acknowledgement of data</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">TI:</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;15&nbsp;55&nbsp;01&nbsp;</tt></b>&lt;155h&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</td>
      <td bgcolor="#ffcccc" width="50%"><i>Backup data section 3
(variable table?)</i></td>
    </tr>
    <tr>
      <td bgcolor="#ccffcc">PC:</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;56&nbsp;00&nbsp;00</tt></b></td>
      <td bgcolor="#ccffcc" width="50%"><i>Acknowledgement of data</i></td>
    </tr>
  </tbody>
</table>
</p>
<p></p>
<p><a name="rts"></a>The protocol for silently sending a backup is
shown below:</p>
<p>
<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%">
      <p align="center">1 </p>
      </td>
      <td rowspan="10">
      <p align="center"><img src="graphics/comp.gif" alt="Computer"
 align="bottom" border="0" height="33" width="30"> </p>
      </td>
      <td bgcolor="#ffffff" width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td rowspan="10">
      <p align="center"><img src="graphics/calc.gif" alt="Calculator"
 align="bottom" border="0" height="67" width="30"> </p>
      </td>
      <td bgcolor="#ffffff" width="80%">RTS with <a
 href="packet.html#backup">backup-style header</a> and type ID = 0x13.</td>
    </tr>
    <tr>
      <td bgcolor="#ffffff" width="7%">
      <p align="center">2 </p>
      </td>
      <td bgcolor="#ffffff" width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td bgcolor="#ffffff" width="80%">ACK</td>
    </tr>
    <tr>
      <td bgcolor="#ffffff" width="7%">
      <p align="center">3 </p>
      </td>
      <td bgcolor="#ffffff" width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td bgcolor="#ffffff" width="80%">CTS or SKIP/EXIT. If exit, do
step 4 and quit.</td>
    </tr>
    <tr>
      <td bgcolor="#ffffff" width="7%">
      <p align="center">4 </p>
      </td>
      <td bgcolor="#ffffff" width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td bgcolor="#ffffff" width="80%">ACK</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">5 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">DATA - section 1 (system data)</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">6 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">ACK</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">7 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">DATA - section 2 (user data)</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">8 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">ACK</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">9 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/right.gif" alt="===&gt;"
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">DATA - section 3 (variable table?)</td>
    </tr>
    <tr>
      <td width="7%">
      <p align="center">10 </p>
      </td>
      <td width="6%">
      <p align="center"><img src="graphics/left.gif" alt="&lt;==="
 align="bottom" border="0" height="13" width="22"> </p>
      </td>
      <td width="80%">ACK</td>
    </tr>
  </tbody>
</table>
</p>
<p></p>
<p><u>Example:</u><br>
<table border="0" cellspacing="0" width="100%">
  <tbody>
    <tr>
      <td bgcolor="#ccffcc">PC:</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;C9&nbsp;09&nbsp;00&nbsp;</tt></b><tt>C0&nbsp;0D&nbsp;13&nbsp;29&nbsp;5C&nbsp;55&nbsp;01&nbsp;27&nbsp;93&nbsp;<b>75&nbsp;02</b></tt></td>
      <td bgcolor="#ccffcc" width="50%"><i>Request to send backup</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">TI:</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;56&nbsp;09&nbsp;00</tt></b></td>
      <td bgcolor="#ffcccc" width="50%"><i>Acknowledgement of RTS</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">&nbsp;</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;09&nbsp;09&nbsp;00</tt></b></td>
      <td bgcolor="#ffcccc" width="50%"><i>Clear to send backup</i></td>
    </tr>
    <tr>
      <td bgcolor="#ccffcc">PC:</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;56&nbsp;00&nbsp;00</tt></b></td>
      <td bgcolor="#ccffcc" width="50%"><i>Acknowledgement of CTS</i></td>
    </tr>
    <tr>
      <td bgcolor="#ccffcc">&nbsp;</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;15&nbsp;C0&nbsp;0D&nbsp;</tt></b>&lt;DC0h&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</td>
      <td bgcolor="#ccffcc" width="50%"><i>Backup data section 1
(system data)</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">TI:</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;56&nbsp;C0&nbsp;0D</tt></b></td>
      <td bgcolor="#ffcccc" width="50%"><i>Acknowledgement of data</i></td>
    </tr>
    <tr>
      <td bgcolor="#ccffcc">PC:</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;15&nbsp;29&nbsp;5C&nbsp;</tt></b>&lt;5C29h&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</td>
      <td bgcolor="#ccffcc" width="50%"><i>Backup data section 2 (user
data)</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">TI:</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;56&nbsp;29&nbsp;5C</tt></b></td>
      <td bgcolor="#ffcccc" width="50%"><i>Acknowledgement of data</i></td>
    </tr>
    <tr>
      <td bgcolor="#ccffcc">PC:</td>
      <td bgcolor="#ccffcc" width="50%"><b><tt>03&nbsp;15&nbsp;55&nbsp;01&nbsp;</tt></b>&lt;155h&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</td>
      <td bgcolor="#ccffcc" width="50%"><i>Backup data section 3
(variable table?)</i></td>
    </tr>
    <tr>
      <td bgcolor="#ffcccc">TI:</td>
      <td bgcolor="#ffcccc" width="50%"><b><tt>83&nbsp;56&nbsp;55&nbsp;01</tt></b></td>
      <td bgcolor="#ffcccc" width="50%"><i>Acknowledgement of data</i></td>
    </tr>
  </tbody>
</table>
<br>
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  <tbody>
    <tr>
      <td width="32%">
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      <p align="center"><a href="misc.html"><img
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</table>
</p>
<hr align="center"><i>Site maintained by Romain Li&eacute;vin (</i><a
 href="mailto:roms@lpg.ticalc.org"><i>roms@lpg.ticalc.org</i></a><i>)
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