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- <TITLE>TI-86 Link Protocol Guide - Backup Transfers</TITLE>
- </HEAD>
- <BODY BGCOLOR="#FFFFE8">
- <P><B>TI-86 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 TI-86 Graph
- Link software does not support backups, so there is no standard backup file format. As of November 2000, only FastLink
- supports the TI-86's backup capability. The proprietary file format it uses can be found in the <A HREF="fformat.html#backup">file
- formats</A> section of this documentation.</P>
- <P>The protocol for all 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 BORDER="1" CELLSPACING="0" WIDTH="92%" BGCOLOR="#FFFFFF">
- <TR>
- <TH WIDTH="7%" BGCOLOR="#008800"><FONT COLOR="#FFFFFF">Step</FONT></TH>
- <TH COLSPAN="3" BGCOLOR="#008800"><FONT COLOR="#FFFFFF">Direction</FONT></TH>
- <TH WIDTH="80%" BGCOLOR="#008800"><FONT COLOR="#FFFFFF">Packet</FONT></TH>
- </TR>
- <TR>
- <TD WIDTH="7%" BGCOLOR="#FFFFFF">
- <P ALIGN="CENTER">1
- </TD>
- <TD ROWSPAN="12">
- <P ALIGN="CENTER"><IMG SRC="graphics/calc.gif" WIDTH="30" HEIGHT="67" ALIGN="BOTTOM" ALT="Sending Unit" BORDER="0">
- </TD>
- <TD WIDTH="6%" BGCOLOR="#FFFFFF">
- <P ALIGN="CENTER"><IMG SRC="graphics/right.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="===>" BORDER="0">
- </TD>
- <TD ROWSPAN="12">
- <P ALIGN="CENTER"><IMG SRC="graphics/calc.gif" WIDTH="30" HEIGHT="67" ALIGN="BOTTOM" ALT="Receiving Unit" BORDER="0">
- </TD>
- <TD WIDTH="80%" BGCOLOR="#FFFFFF">VAR with <A HREF="packet.html#backup">backup-style header</A> and type ID = 0x1D.</TD>
- </TR>
- <TR>
- <TD WIDTH="7%" BGCOLOR="#FFFFFF">
- <P ALIGN="CENTER">2
- </TD>
- <TD WIDTH="6%" BGCOLOR="#FFFFFF">
- <P ALIGN="CENTER"><IMG SRC="graphics/left.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="<===" BORDER="0">
- </TD>
- <TD WIDTH="80%" BGCOLOR="#FFFFFF">ACK</TD>
- </TR>
- <TR>
- <TD WIDTH="7%" BGCOLOR="#FFFFFF">
- <P ALIGN="CENTER">3
- </TD>
- <TD WIDTH="6%" BGCOLOR="#FFFFFF">
- <P ALIGN="CENTER"><IMG SRC="graphics/left.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="<===" BORDER="0">
- </TD>
- <TD WIDTH="80%" BGCOLOR="#FFFFFF">CTS or SKIP/EXIT. If exit, do step 4 and quit.</TD>
- </TR>
- <TR>
- <TD WIDTH="7%" BGCOLOR="#FFFFFF">
- <P ALIGN="CENTER">4
- </TD>
- <TD WIDTH="6%" BGCOLOR="#FFFFFF">
- <P ALIGN="CENTER"><IMG SRC="graphics/right.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="===>" BORDER="0">
- </TD>
- <TD WIDTH="80%" BGCOLOR="#FFFFFF">ACK</TD>
- </TR>
- <TR>
- <TD WIDTH="7%">
- <P ALIGN="CENTER">5
- </TD>
- <TD WIDTH="6%">
- <P ALIGN="CENTER"><IMG SRC="graphics/right.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="===>" BORDER="0">
- </TD>
- <TD WIDTH="80%">DATA - section 1 (system data)</TD>
- </TR>
- <TR>
- <TD WIDTH="7%">
- <P ALIGN="CENTER">6
- </TD>
- <TD WIDTH="6%">
- <P ALIGN="CENTER"><IMG SRC="graphics/left.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="<===" BORDER="0">
- </TD>
- <TD WIDTH="80%">ACK</TD>
- </TR>
- <TR>
- <TD WIDTH="7%">
- <P ALIGN="CENTER">7
- </TD>
- <TD WIDTH="6%">
- <P ALIGN="CENTER"><IMG SRC="graphics/right.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="===>" BORDER="0">
- </TD>
-
- <TD WIDTH="80%">DATA - section 2 (user data <=64K)</TD>
- </TR>
- <TR>
- <TD WIDTH="7%">
- <P ALIGN="CENTER">8
- </TD>
- <TD WIDTH="6%">
- <P ALIGN="CENTER"><IMG SRC="graphics/left.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="<===" BORDER="0">
- </TD>
- <TD WIDTH="80%">ACK</TD>
- </TR>
- <TR>
- <TD WIDTH="7%">
- <P ALIGN="CENTER">9
- </TD>
- <TD WIDTH="6%">
- <P ALIGN="CENTER"><IMG SRC="graphics/right.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="===>" BORDER="0">
- </TD>
-
- <TD WIDTH="80%">DATA - section 3 (user data >64K - see note below)</TD>
- </TR>
- <TR>
- <TD WIDTH="7%">
- <P ALIGN="CENTER">10
- </TD>
- <TD WIDTH="6%">
- <P ALIGN="CENTER"><IMG SRC="graphics/left.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="<===" BORDER="0">
- </TD>
- <TD WIDTH="80%">ACK (see note below)</TD>
- </TR>
- <TR>
- <TD WIDTH="7%">
- <P ALIGN="CENTER">11
- </TD>
- <TD WIDTH="6%">
- <P ALIGN="CENTER"><IMG SRC="graphics/right.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="===>" BORDER="0">
- </TD>
-
- <TD WIDTH="80%">DATA - section 4 (variable table)</TD>
- </TR>
- <TR>
- <TD WIDTH="7%">
- <P ALIGN="CENTER">12
- </TD>
- <TD WIDTH="6%">
- <P ALIGN="CENTER"><IMG SRC="graphics/left.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="<===" BORDER="0">
- </TD>
- <TD WIDTH="80%">ACK</TD>
- </TR>
- </TABLE>
- <I>Note: Steps 9 and 10 are not present when the data size of section 3 (specified
- in the header) is zero. This depends on the TI86 ROM version.</I>
- <p></P>
- <P><U>Example (PC sending backup to TI):</U> <i>backup in '4 parts'</i><BR>
- <TABLE BORDER="0" CELLSPACING="0" WIDTH="100%">
- <TR>
- <TD BGCOLOR="#CCFFCC">PC:</TD>
-
- <TD WIDTH="50%" BGCOLOR="#CCFFCC"><B><TT>06 06 09 00 </TT></B><TT>8C 36 1D FF FF 15 01 41 01 <B>4C 00</B></TT></TD>
- <TD WIDTH="50%" BGCOLOR="#CCFFCC"><I>Variable header: Backup</I></TD>
- </TR>
- <TR>
- <TD BGCOLOR="#FFCCCC">TI:</TD>
-
- <TD WIDTH="50%" BGCOLOR="#FFCCCC"><B><TT>86 56 09 00</TT></B></TD>
- <TD WIDTH="50%" BGCOLOR="#FFCCCC"><I>Acknowledgement of header</I></TD>
- </TR>
- <TR>
- <TD BGCOLOR="#FFCCCC"> </TD>
-
- <TD WIDTH="50%" BGCOLOR="#FFCCCC"><B><TT>86 09 09 00</TT></B></TD>
- <TD WIDTH="50%" BGCOLOR="#FFCCCC"><I>Clear to send backup</I></TD>
- </TR>
- <TR>
- <TD BGCOLOR="#CCFFCC">PC:</TD>
- <TD WIDTH="50%" BGCOLOR="#CCFFCC"><B><TT>06 56 00 00</TT></B></TD>
- <TD WIDTH="50%" BGCOLOR="#CCFFCC"><I>Acknowledgement of CTS</I></TD>
- </TR>
- <TR>
- <TD BGCOLOR="#CCFFCC"> </TD>
- <TD WIDTH="50%" BGCOLOR="#CCFFCC"><B><TT>06 15 8C 36 </TT></B><368Ch bytes of data plus checksum></TD>
- <TD WIDTH="50%" BGCOLOR="#CCFFCC"><I>Backup data section 1 (system data)</I></TD>
- </TR>
- <TR>
- <TD BGCOLOR="#FFCCCC">TI:</TD>
- <TD WIDTH="50%" BGCOLOR="#FFCCCC"><B><TT>86 56 00 00</TT></B></TD>
- <TD WIDTH="50%" BGCOLOR="#FFCCCC"><I>Acknowledgement of data</I></TD>
- </TR>
- <TR>
- <TD BGCOLOR="#CCFFCC">PC:</TD>
- <TD WIDTH="50%" BGCOLOR="#CCFFCC"><B><TT>06 15 FF FF </TT></B><FFFFh bytes of data plus checksum></TD>
-
- <TD WIDTH="50%" BGCOLOR="#CCFFCC"><I>Backup data section 2 (user data <=64K)</I></TD>
- </TR>
- <TR>
- <TD BGCOLOR="#FFCCCC">TI:</TD>
- <TD WIDTH="50%" BGCOLOR="#FFCCCC"><B><TT>86 56 00 00</TT></B></TD>
- <TD WIDTH="50%" BGCOLOR="#FFCCCC"><I>Acknowledgement of data</I></TD>
- </TR>
- <TR>
- <TD BGCOLOR="#CCFFCC">PC:</TD>
- <TD WIDTH="50%" BGCOLOR="#CCFFCC"><B><TT>06 15 15 01 </TT></B><115h bytes of data plus checksum></TD>
-
- <TD WIDTH="50%" BGCOLOR="#CCFFCC"><I>Backup data section 3 (user data >64K)</I></TD>
- </TR>
- <TR>
- <TD BGCOLOR="#FFCCCC">TI:</TD>
- <TD WIDTH="50%" BGCOLOR="#FFCCCC"><B><TT>86 56 00 00</TT></B></TD>
- <TD WIDTH="50%" BGCOLOR="#FFCCCC"><I>Acknowledgement of data</I></TD>
- </TR>
- <TR>
- <TD BGCOLOR="#CCFFCC">PC:</TD>
- <TD WIDTH="50%" BGCOLOR="#CCFFCC"><B><TT>06 15 41 01 </TT></B><141h bytes of data plus checksum></TD>
-
- <TD WIDTH="50%" BGCOLOR="#CCFFCC"><I>Backup data section 4 (variable table)</I></TD>
- </TR>
- <TR>
- <TD BGCOLOR="#FFCCCC">TI:</TD>
- <TD WIDTH="50%" BGCOLOR="#FFCCCC"><B><TT>86 56 00 00</TT></B></TD>
- <TD WIDTH="50%" BGCOLOR="#FFCCCC"><I>Acknowledgement of data</I></TD>
- </TR>
- </TABLE>
- <p><u>Example (PC sending backup to TI):</u> <i>backup in '3 parts'</i><br>
- </p>
- <table border="0" cellspacing="0" width="100%">
- <tr>
- <td bgcolor="#CCFFCC">PC:</td>
- <td width="50%" bgcolor="#CCFFCC"><b><tt>06 06 09 00 </tt></b><tt>8C 36 1D 01 20 00 00 3F 00 <b>3E 01</b></tt></td>
- <td width="50%" bgcolor="#CCFFCC"><i>Variable header: Backup</i></td>
- </tr>
- <tr>
- <td bgcolor="#FFCCCC">TI:</td>
- <td width="50%" bgcolor="#FFCCCC"><b><tt>86 56 09 00</tt></b></td>
- <td width="50%" bgcolor="#FFCCCC"><i>Acknowledgement of header</i></td>
- </tr>
- <tr>
- <td bgcolor="#FFCCCC"> </td>
- <td width="50%" bgcolor="#FFCCCC"><b><tt>86 09 09 00</tt></b></td>
- <td width="50%" bgcolor="#FFCCCC"><i>Clear to send backup</i></td>
- </tr>
- <tr>
- <td bgcolor="#CCFFCC">PC:</td>
- <td width="50%" bgcolor="#CCFFCC"><b><tt>06 56 00 00</tt></b></td>
- <td width="50%" bgcolor="#CCFFCC"><i>Acknowledgement of CTS</i></td>
- </tr>
- <tr>
- <td bgcolor="#CCFFCC"> </td>
- <td width="50%" bgcolor="#CCFFCC"><b><tt>06 15 8C 36 </tt></b><368Ch bytes of data plus checksum></td>
- <td width="50%" bgcolor="#CCFFCC"><i>Backup data section 1 (system data)</i></td>
- </tr>
- <tr>
- <td bgcolor="#FFCCCC">TI:</td>
- <td width="50%" bgcolor="#FFCCCC"><b><tt>86 56 00 00</tt></b></td>
- <td width="50%" bgcolor="#FFCCCC"><i>Acknowledgement of data</i></td>
- </tr>
- <tr>
- <td bgcolor="#CCFFCC">PC:</td>
- <td width="50%" bgcolor="#CCFFCC"><b><tt>06 15 20 00 </tt></b><2000h bytes of data plus checksum></td>
- <td width="50%" bgcolor="#CCFFCC"><i>Backup data section 2 (user data <64K)</i></td>
- </tr>
- <tr>
- <td bgcolor="#FFCCCC">TI:</td>
- <td width="50%" bgcolor="#FFCCCC"><b><tt>86 56 00 00</tt></b></td>
- <td width="50%" bgcolor="#FFCCCC"><i>Acknowledgement of data</i></td>
- </tr>
- <tr>
- <td bgcolor="#CCFFCC">PC:</td>
- <td width="50%" bgcolor="#CCFFCC"><b><tt>06 15 3F 00 </tt></b><3F00h bytes of data plus checksum></td>
- <td width="50%" bgcolor="#CCFFCC"><i>Backup data section 4 (variable table)</i></td>
- </tr>
- <tr>
- <td bgcolor="#FFCCCC">TI:</td>
- <td width="50%" bgcolor="#FFCCCC"><b><tt>86 56 00 00</tt></b></td>
- <td width="50%" bgcolor="#FFCCCC"><i>Acknowledgement of data</i></td>
- </tr>
- </table>
- <p> </p>
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- Silent transfers</A>
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- <P ALIGN="CENTER"><A HREF="index.html"><IMG SRC="graphics/home.gif" WIDTH="32" HEIGHT="32" ALIGN="BOTTOM" ALT="[home]"
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