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  6. <TITLE>TI-86 Link Protocol Guide - Backup Transfers</TITLE>
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  8. <BODY BGCOLOR="#FFFFE8">
  9. <P><B>TI-86 Link Protocol Guide v1.0</B> - System Backup Transfers</P>
  10. <CENTER>
  11. <H2>
  12. <HR ALIGN="CENTER">
  13. System Backup Transfers</H2>
  14. </CENTER>
  15. <P>A System Backup is one large transmission containing all user-modifiable data in the calculator. The TI-86 Graph
  16. Link software does not support backups, so there is no standard backup file format. As of November 2000, only FastLink
  17. supports the TI-86's backup capability. The proprietary file format it uses can be found in the <A HREF="fformat.html#backup">file
  18. formats</A> section of this documentation.</P>
  19. <P>The protocol for all system backup transfers is shown below. For information on packet formats, <A HREF="packet.html">click
  20. here</A>.</P>
  21. <P>A computer can be either the sending unit or the receiving unit.</P>
  22. <P>
  23. <TABLE BORDER="1" CELLSPACING="0" WIDTH="92%" BGCOLOR="#FFFFFF">
  24. <TR>
  25. <TH WIDTH="7%" BGCOLOR="#008800"><FONT COLOR="#FFFFFF">Step</FONT></TH>
  26. <TH COLSPAN="3" BGCOLOR="#008800"><FONT COLOR="#FFFFFF">Direction</FONT></TH>
  27. <TH WIDTH="80%" BGCOLOR="#008800"><FONT COLOR="#FFFFFF">Packet</FONT></TH>
  28. </TR>
  29. <TR>
  30. <TD WIDTH="7%" BGCOLOR="#FFFFFF">
  31. <P ALIGN="CENTER">1
  32. </TD>
  33. <TD ROWSPAN="12">
  34. <P ALIGN="CENTER"><IMG SRC="graphics/calc.gif" WIDTH="30" HEIGHT="67" ALIGN="BOTTOM" ALT="Sending Unit" BORDER="0">
  35. </TD>
  36. <TD WIDTH="6%" BGCOLOR="#FFFFFF">
  37. <P ALIGN="CENTER"><IMG SRC="graphics/right.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="===>" BORDER="0">
  38. </TD>
  39. <TD ROWSPAN="12">
  40. <P ALIGN="CENTER"><IMG SRC="graphics/calc.gif" WIDTH="30" HEIGHT="67" ALIGN="BOTTOM" ALT="Receiving Unit" BORDER="0">
  41. </TD>
  42. <TD WIDTH="80%" BGCOLOR="#FFFFFF">VAR with <A HREF="packet.html#backup">backup-style header</A> and type ID = 0x1D.</TD>
  43. </TR>
  44. <TR>
  45. <TD WIDTH="7%" BGCOLOR="#FFFFFF">
  46. <P ALIGN="CENTER">2
  47. </TD>
  48. <TD WIDTH="6%" BGCOLOR="#FFFFFF">
  49. <P ALIGN="CENTER"><IMG SRC="graphics/left.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="<===" BORDER="0">
  50. </TD>
  51. <TD WIDTH="80%" BGCOLOR="#FFFFFF">ACK</TD>
  52. </TR>
  53. <TR>
  54. <TD WIDTH="7%" BGCOLOR="#FFFFFF">
  55. <P ALIGN="CENTER">3
  56. </TD>
  57. <TD WIDTH="6%" BGCOLOR="#FFFFFF">
  58. <P ALIGN="CENTER"><IMG SRC="graphics/left.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="<===" BORDER="0">
  59. </TD>
  60. <TD WIDTH="80%" BGCOLOR="#FFFFFF">CTS or SKIP/EXIT. If exit, do step 4 and quit.</TD>
  61. </TR>
  62. <TR>
  63. <TD WIDTH="7%" BGCOLOR="#FFFFFF">
  64. <P ALIGN="CENTER">4
  65. </TD>
  66. <TD WIDTH="6%" BGCOLOR="#FFFFFF">
  67. <P ALIGN="CENTER"><IMG SRC="graphics/right.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="===>" BORDER="0">
  68. </TD>
  69. <TD WIDTH="80%" BGCOLOR="#FFFFFF">ACK</TD>
  70. </TR>
  71. <TR>
  72. <TD WIDTH="7%">
  73. <P ALIGN="CENTER">5
  74. </TD>
  75. <TD WIDTH="6%">
  76. <P ALIGN="CENTER"><IMG SRC="graphics/right.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="===>" BORDER="0">
  77. </TD>
  78. <TD WIDTH="80%">DATA - section 1 (system data)</TD>
  79. </TR>
  80. <TR>
  81. <TD WIDTH="7%">
  82. <P ALIGN="CENTER">6
  83. </TD>
  84. <TD WIDTH="6%">
  85. <P ALIGN="CENTER"><IMG SRC="graphics/left.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="<===" BORDER="0">
  86. </TD>
  87. <TD WIDTH="80%">ACK</TD>
  88. </TR>
  89. <TR>
  90. <TD WIDTH="7%">
  91. <P ALIGN="CENTER">7
  92. </TD>
  93. <TD WIDTH="6%">
  94. <P ALIGN="CENTER"><IMG SRC="graphics/right.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="===>" BORDER="0">
  95. </TD>
  96. <TD WIDTH="80%">DATA - section 2 (user data &lt;=64K)</TD>
  97. </TR>
  98. <TR>
  99. <TD WIDTH="7%">
  100. <P ALIGN="CENTER">8
  101. </TD>
  102. <TD WIDTH="6%">
  103. <P ALIGN="CENTER"><IMG SRC="graphics/left.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="<===" BORDER="0">
  104. </TD>
  105. <TD WIDTH="80%">ACK</TD>
  106. </TR>
  107. <TR>
  108. <TD WIDTH="7%">
  109. <P ALIGN="CENTER">9
  110. </TD>
  111. <TD WIDTH="6%">
  112. <P ALIGN="CENTER"><IMG SRC="graphics/right.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="===>" BORDER="0">
  113. </TD>
  114. <TD WIDTH="80%">DATA - section 3 (user data &gt;64K - see note below)</TD>
  115. </TR>
  116. <TR>
  117. <TD WIDTH="7%">
  118. <P ALIGN="CENTER">10
  119. </TD>
  120. <TD WIDTH="6%">
  121. <P ALIGN="CENTER"><IMG SRC="graphics/left.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="<===" BORDER="0">
  122. </TD>
  123. <TD WIDTH="80%">ACK (see note below)</TD>
  124. </TR>
  125. <TR>
  126. <TD WIDTH="7%">
  127. <P ALIGN="CENTER">11
  128. </TD>
  129. <TD WIDTH="6%">
  130. <P ALIGN="CENTER"><IMG SRC="graphics/right.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="===>" BORDER="0">
  131. </TD>
  132. <TD WIDTH="80%">DATA - section 4 (variable table)</TD>
  133. </TR>
  134. <TR>
  135. <TD WIDTH="7%">
  136. <P ALIGN="CENTER">12
  137. </TD>
  138. <TD WIDTH="6%">
  139. <P ALIGN="CENTER"><IMG SRC="graphics/left.gif" WIDTH="22" HEIGHT="13" ALIGN="BOTTOM" ALT="<===" BORDER="0">
  140. </TD>
  141. <TD WIDTH="80%">ACK</TD>
  142. </TR>
  143. </TABLE>
  144. <I>Note: Steps 9 and 10 are not present when the data size of section 3 (specified
  145. in the header) is zero. This depends on the TI86 ROM version.</I>
  146. <p></P>
  147. <P><U>Example (PC sending backup to TI):</U> <i>backup in '4 parts'</i><BR>
  148. <TABLE BORDER="0" CELLSPACING="0" WIDTH="100%">
  149. <TR>
  150. <TD BGCOLOR="#CCFFCC">PC:</TD>
  151. <TD WIDTH="50%" BGCOLOR="#CCFFCC"><B><TT>06&nbsp;06&nbsp;09&nbsp;00&nbsp;</TT></B><TT>8C&nbsp;36&nbsp;1D&nbsp;FF&nbsp;FF&nbsp;15&nbsp;01&nbsp;41&nbsp;01&nbsp;<B>4C&nbsp;00</B></TT></TD>
  152. <TD WIDTH="50%" BGCOLOR="#CCFFCC"><I>Variable header: Backup</I></TD>
  153. </TR>
  154. <TR>
  155. <TD BGCOLOR="#FFCCCC">TI:</TD>
  156. <TD WIDTH="50%" BGCOLOR="#FFCCCC"><B><TT>86&nbsp;56&nbsp;09&nbsp;00</TT></B></TD>
  157. <TD WIDTH="50%" BGCOLOR="#FFCCCC"><I>Acknowledgement of header</I></TD>
  158. </TR>
  159. <TR>
  160. <TD BGCOLOR="#FFCCCC">&nbsp;</TD>
  161. <TD WIDTH="50%" BGCOLOR="#FFCCCC"><B><TT>86&nbsp;09&nbsp;09&nbsp;00</TT></B></TD>
  162. <TD WIDTH="50%" BGCOLOR="#FFCCCC"><I>Clear to send backup</I></TD>
  163. </TR>
  164. <TR>
  165. <TD BGCOLOR="#CCFFCC">PC:</TD>
  166. <TD WIDTH="50%" BGCOLOR="#CCFFCC"><B><TT>06&nbsp;56&nbsp;00&nbsp;00</TT></B></TD>
  167. <TD WIDTH="50%" BGCOLOR="#CCFFCC"><I>Acknowledgement of CTS</I></TD>
  168. </TR>
  169. <TR>
  170. <TD BGCOLOR="#CCFFCC">&nbsp;</TD>
  171. <TD WIDTH="50%" BGCOLOR="#CCFFCC"><B><TT>06&nbsp;15&nbsp;8C&nbsp;36&nbsp;</TT></B>&lt;368Ch&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</TD>
  172. <TD WIDTH="50%" BGCOLOR="#CCFFCC"><I>Backup data section 1 (system data)</I></TD>
  173. </TR>
  174. <TR>
  175. <TD BGCOLOR="#FFCCCC">TI:</TD>
  176. <TD WIDTH="50%" BGCOLOR="#FFCCCC"><B><TT>86&nbsp;56&nbsp;00&nbsp;00</TT></B></TD>
  177. <TD WIDTH="50%" BGCOLOR="#FFCCCC"><I>Acknowledgement of data</I></TD>
  178. </TR>
  179. <TR>
  180. <TD BGCOLOR="#CCFFCC">PC:</TD>
  181. <TD WIDTH="50%" BGCOLOR="#CCFFCC"><B><TT>06&nbsp;15&nbsp;FF&nbsp;FF&nbsp;</TT></B>&lt;FFFFh&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</TD>
  182. <TD WIDTH="50%" BGCOLOR="#CCFFCC"><I>Backup data section 2 (user data &lt;=64K)</I></TD>
  183. </TR>
  184. <TR>
  185. <TD BGCOLOR="#FFCCCC">TI:</TD>
  186. <TD WIDTH="50%" BGCOLOR="#FFCCCC"><B><TT>86&nbsp;56&nbsp;00&nbsp;00</TT></B></TD>
  187. <TD WIDTH="50%" BGCOLOR="#FFCCCC"><I>Acknowledgement of data</I></TD>
  188. </TR>
  189. <TR>
  190. <TD BGCOLOR="#CCFFCC">PC:</TD>
  191. <TD WIDTH="50%" BGCOLOR="#CCFFCC"><B><TT>06&nbsp;15&nbsp;15&nbsp;01&nbsp;</TT></B>&lt;115h&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</TD>
  192. <TD WIDTH="50%" BGCOLOR="#CCFFCC"><I>Backup data section 3 (user data &gt;64K)</I></TD>
  193. </TR>
  194. <TR>
  195. <TD BGCOLOR="#FFCCCC">TI:</TD>
  196. <TD WIDTH="50%" BGCOLOR="#FFCCCC"><B><TT>86&nbsp;56&nbsp;00&nbsp;00</TT></B></TD>
  197. <TD WIDTH="50%" BGCOLOR="#FFCCCC"><I>Acknowledgement of data</I></TD>
  198. </TR>
  199. <TR>
  200. <TD BGCOLOR="#CCFFCC">PC:</TD>
  201. <TD WIDTH="50%" BGCOLOR="#CCFFCC"><B><TT>06&nbsp;15&nbsp;41&nbsp;01&nbsp;</TT></B>&lt;141h&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</TD>
  202. <TD WIDTH="50%" BGCOLOR="#CCFFCC"><I>Backup data section 4 (variable table)</I></TD>
  203. </TR>
  204. <TR>
  205. <TD BGCOLOR="#FFCCCC">TI:</TD>
  206. <TD WIDTH="50%" BGCOLOR="#FFCCCC"><B><TT>86&nbsp;56&nbsp;00&nbsp;00</TT></B></TD>
  207. <TD WIDTH="50%" BGCOLOR="#FFCCCC"><I>Acknowledgement of data</I></TD>
  208. </TR>
  209. </TABLE>
  210. <p><u>Example (PC sending backup to TI):</u> <i>backup in '3 parts'</i><br>
  211. </p>
  212. <table border="0" cellspacing="0" width="100%">
  213. <tr>
  214. <td bgcolor="#CCFFCC">PC:</td>
  215. <td width="50%" bgcolor="#CCFFCC"><b><tt>06&nbsp;06&nbsp;09&nbsp;00&nbsp;</tt></b><tt>8C&nbsp;36&nbsp;1D&nbsp;01&nbsp;20&nbsp;00&nbsp;00&nbsp;3F&nbsp;00&nbsp;<b>3E&nbsp;01</b></tt></td>
  216. <td width="50%" bgcolor="#CCFFCC"><i>Variable header: Backup</i></td>
  217. </tr>
  218. <tr>
  219. <td bgcolor="#FFCCCC">TI:</td>
  220. <td width="50%" bgcolor="#FFCCCC"><b><tt>86&nbsp;56&nbsp;09&nbsp;00</tt></b></td>
  221. <td width="50%" bgcolor="#FFCCCC"><i>Acknowledgement of header</i></td>
  222. </tr>
  223. <tr>
  224. <td bgcolor="#FFCCCC">&nbsp;</td>
  225. <td width="50%" bgcolor="#FFCCCC"><b><tt>86&nbsp;09&nbsp;09&nbsp;00</tt></b></td>
  226. <td width="50%" bgcolor="#FFCCCC"><i>Clear to send backup</i></td>
  227. </tr>
  228. <tr>
  229. <td bgcolor="#CCFFCC">PC:</td>
  230. <td width="50%" bgcolor="#CCFFCC"><b><tt>06&nbsp;56&nbsp;00&nbsp;00</tt></b></td>
  231. <td width="50%" bgcolor="#CCFFCC"><i>Acknowledgement of CTS</i></td>
  232. </tr>
  233. <tr>
  234. <td bgcolor="#CCFFCC">&nbsp;</td>
  235. <td width="50%" bgcolor="#CCFFCC"><b><tt>06&nbsp;15&nbsp;8C&nbsp;36&nbsp;</tt></b>&lt;368Ch&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</td>
  236. <td width="50%" bgcolor="#CCFFCC"><i>Backup data section 1 (system data)</i></td>
  237. </tr>
  238. <tr>
  239. <td bgcolor="#FFCCCC">TI:</td>
  240. <td width="50%" bgcolor="#FFCCCC"><b><tt>86&nbsp;56&nbsp;00&nbsp;00</tt></b></td>
  241. <td width="50%" bgcolor="#FFCCCC"><i>Acknowledgement of data</i></td>
  242. </tr>
  243. <tr>
  244. <td bgcolor="#CCFFCC">PC:</td>
  245. <td width="50%" bgcolor="#CCFFCC"><b><tt>06&nbsp;15&nbsp;20&nbsp;00&nbsp;</tt></b>&lt;2000h&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</td>
  246. <td width="50%" bgcolor="#CCFFCC"><i>Backup data section 2 (user data &lt;64K)</i></td>
  247. </tr>
  248. <tr>
  249. <td bgcolor="#FFCCCC">TI:</td>
  250. <td width="50%" bgcolor="#FFCCCC"><b><tt>86&nbsp;56&nbsp;00&nbsp;00</tt></b></td>
  251. <td width="50%" bgcolor="#FFCCCC"><i>Acknowledgement of data</i></td>
  252. </tr>
  253. <tr>
  254. <td bgcolor="#CCFFCC">PC:</td>
  255. <td width="50%" bgcolor="#CCFFCC"><b><tt>06&nbsp;15&nbsp;3F&nbsp;00&nbsp;</tt></b>&lt;3F00h&nbsp;bytes&nbsp;of&nbsp;data&nbsp;plus&nbsp;checksum&gt;</td>
  256. <td width="50%" bgcolor="#CCFFCC"><i>Backup data section 4 (variable table)</i></td>
  257. </tr>
  258. <tr>
  259. <td bgcolor="#FFCCCC">TI:</td>
  260. <td width="50%" bgcolor="#FFCCCC"><b><tt>86&nbsp;56&nbsp;00&nbsp;00</tt></b></td>
  261. <td width="50%" bgcolor="#FFCCCC"><i>Acknowledgement of data</i></td>
  262. </tr>
  263. </table>
  264. <p>&nbsp;</p>
  265. <TABLE BORDER="0" CELLSPACING="0" WIDTH="100%">
  266. <TR>
  267. <TD WIDTH="32%">
  268. <P ALIGN="CENTER"><A HREF="silent.html"><IMG SRC="graphics/prevpage.gif" WIDTH="32" HEIGHT="32" ALIGN="BOTTOM"
  269. ALT="[previous page]" BORDER="2"><BR>
  270. Silent transfers</A>
  271. </TD>
  272. <TD WIDTH="34%">
  273. <P ALIGN="CENTER"><A HREF="index.html"><IMG SRC="graphics/home.gif" WIDTH="32" HEIGHT="32" ALIGN="BOTTOM" ALT="[home]"
  274. BORDER="2"><BR>
  275. Table of Contents</A>
  276. </TD>
  277. <TD WIDTH="34%">
  278. <P ALIGN="CENTER"><A HREF="vars.html"><IMG SRC="graphics/nextpage.gif" WIDTH="32" HEIGHT="32" ALIGN="BOTTOM" ALT="[next page]"
  279. BORDER="2"><BR>
  280. Variable Formats</A>
  281. </TD>
  282. </TR>
  283. </TABLE>
  284. <HR ALIGN="CENTER">
  285. <I>Site maintained by Romain Li&eacute;vin (</I><A HREF="mailto:roms@lpg.ticalc.org"><I>roms@lpg.ticalc.org</I></A><I>)
  286. and Tim Singer (</I><A HREF="mailto:tsinger@gladstone.uoregon.edu"><I>tsinger@gladstone.uoregon.edu</I></A><I>)</I>
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