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  1. <!doctype html public "-//w3c//dtd html 4.0 transitional//en">
    2. 

  2. <html>
    3. 

  3. <head>
    4. 

  4.    <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
    5. 

  5.    <meta name="GENERATOR" content="Mozilla/4.7 [en] (X11; I; Linux 2.4.0-test6 i586) [Netscape]">
    6. 

  6.    <title>TI-89 Link Protocol Guide - Manual Transfers</title>
    7. 

  7. </head>
    8. 

  8. <body bgcolor="#FFFFE8">
    9. 

  9. <b>TI-92 Link Protocol Guide</b> - Manual Variable Transfers 
    10. 

  10. <center>
    11. 

  11. <h2>
    12. 

  12. 

  13. <hr ALIGN="CENTER">Manual Variable Transfers</h2></center>
    14. 

  14. The TI-92 uses manual transfer protocols when it is in Link mode. On the sending 
    15. 

  15. unit a user must choose the variables to be sent, and the receiving calculator 
    16. 

  16. must be put into a special reception mode. 
    17. 

  17. <p>The protocol for all manual variable transfers is shown below. For information
    18. 

  18. on packet formats, <a href="packet.html">click here</a>.
    19. 

  19. <p>A computer can be either the sending unit or the receiving unit.
    20. 

  20. <table BORDER CELLSPACING=0 WIDTH="92%" BGCOLOR="#FFFFFF" >
    21. 

  21. <tr>
    22. 

  22. <th WIDTH="7%" BGCOLOR="#008800"><font color="#FFFFFF">Step</font></th>
    23. 

  23. 

  24. <th COLSPAN="3" BGCOLOR="#008800"><font color="#FFFFFF">Direction</font></th>
    25. 

  25. 

  26. <th WIDTH="80%" BGCOLOR="#008800"><font color="#FFFFFF">Packet</font></th>
    27. 

  27. </tr>
    28. 

  28. 

  29. <tr>
    30. 

  30. <td WIDTH="7%" BGCOLOR="#FFFFFF">
    31. 

  31. <center>1&nbsp;</center>
    32. 

  32. </td>
    33. 

  33. 

  34. <td ROWSPAN="8">
    35. 

  35. <center><img SRC="graphics/calc.gif" ALT="Sending Unit" BORDER=0 height=35 width=60 align=BOTTOM></center>
    36. 

  36. </td>
    37. 

  37. 

  38. <td BGCOLOR="#FFFFFF">
    39. 

  39. <center><img SRC="graphics/right.gif" ALT="===>" BORDER=0 height=13 width=22 align=BOTTOM></center>
    40. 

  40. </td>
    41. 

  41. 

  42. <td ROWSPAN="8">
    43. 

  43. <center><img SRC="graphics/calc.gif" ALT="Receiving Unit" BORDER=0 height=35 width=60 align=BOTTOM></center>
    44. 

  44. </td>
    45. 

  45. 

  46. <td WIDTH="80%" BGCOLOR="#FFFFFF">VAR (specifing the size without the extra
    47. 

  47. four bytes).</td>
    48. 

  48. </tr>
    49. 

  49. 

  50. <tr>
    51. 

  51. <td WIDTH="7%" BGCOLOR="#FFFFFF">
    52. 

  52. <center>2&nbsp;</center>
    53. 

  53. </td>
    54. 

  54. 

  55. <td BGCOLOR="#FFFFFF">
    56. 

  56. <center><img SRC="graphics/left.gif" ALT="<===" BORDER=0 height=13 width=22 align=BOTTOM></center>
    57. 

  57. </td>
    58. 

  58. 

  59. <td WIDTH="80%" BGCOLOR="#FFFFFF">ACK</td>
    60. 

  60. </tr>
    61. 

  61. 

  62. <tr>
    63. 

  63. <td WIDTH="7%" BGCOLOR="#FFFFFF">
    64. 

  64. <center>3&nbsp;</center>
    65. 

  65. </td>
    66. 

  66. 

  67. <td BGCOLOR="#FFFFFF">
    68. 

  68. <center><img SRC="graphics/left.gif" ALT="<===" BORDER=0 height=13 width=22 align=BOTTOM></center>
    69. 

  69. </td>
    70. 

  70. 

  71. <td WIDTH="80%" BGCOLOR="#FFFFFF">CTS or MEM. If MEM, then stop.</td>
    72. 

  72. </tr>
    73. 

  73. 

  74. <tr>
    75. 

  75. <td WIDTH="7%" BGCOLOR="#FFFFFF">
    76. 

  76. <center>4&nbsp;</center>
    77. 

  77. </td>
    78. 

  78. 

  79. <td BGCOLOR="#FFFFFF">
    80. 

  80. <center><img SRC="graphics/right.gif" ALT="===>" BORDER=0 height=13 width=22 align=BOTTOM></center>
    81. 

  81. </td>
    82. 

  82. 

  83. <td WIDTH="80%" BGCOLOR="#FFFFFF">ACK</td>
    84. 

  84. </tr>
    85. 

  85. 

  86. <tr>
    87. 

  87. <td WIDTH="7%">
    88. 

  88. <center>5&nbsp;</center>
    89. 

  89. </td>
    90. 

  90. 

  91. <td>
    92. 

  92. <center><img SRC="graphics/right.gif" ALT="===>" BORDER=0 height=13 width=22 align=BOTTOM></center>
    93. 

  93. </td>
    94. 

  94. 

  95. <td WIDTH="80%">DATA with an extra four bytes at the beginning.</td>
    96. 

  96. </tr>
    97. 

  97. 

  98. <tr>
    99. 

  99. <td WIDTH="7%">
    100. 

  100. <center>6&nbsp;</center>
    101. 

  101. </td>
    102. 

  102. 

  103. <td>
    104. 

  104. <center><img SRC="graphics/left.gif" ALT="<===" BORDER=0 height=13 width=22 align=BOTTOM></center>
    105. 

  105. </td>
    106. 

  106. 

  107. <td WIDTH="80%">ACK</td>
    108. 

  108. </tr>
    109. 

  109. 

  110. <tr>
    111. 

  111. <td WIDTH="7%">
    112. 

  112. <center>7&nbsp;</center>
    113. 

  113. </td>
    114. 

  114. 

  115. <td>
    116. 

  116. <center><img SRC="graphics/right.gif" ALT="===>" BORDER=0 height=13 width=22 align=BOTTOM></center>
    117. 

  117. </td>
    118. 

  118. 

  119. <td WIDTH="80%">EOT or another VAR. If var, go to step 2.</td>
    120. 

  120. </tr>
    121. 

  121. 

  122. <tr>
    123. 

  123. <td WIDTH="7%">
    124. 

  124. <center>8&nbsp;</center>
    125. 

  125. </td>
    126. 

  126. 

  127. <td>
    128. 

  128. <center><img SRC="graphics/left.gif" ALT="<===" BORDER=0 height=13 width=22 align=BOTTOM></center>
    129. 

  129. </td>
    130. 

  130. 

  131. <td WIDTH="80%">ACK</td>
    132. 

  132. </tr>
    133. 

  133. </table>
    134. 

  134. 

  135. <p>The data packet contains the variable data. For information on variable
    136. 

  136. formats, <a href="vars.html">click here</a>.
    137. 

  137. <p><u>Examples (PC sending variables to TI):</u>
    138. 

  138. <table BORDER=0 CELLSPACING=0 WIDTH="100%" >
    139. 

  139. <tr>
    140. 

  140. <td BGCOLOR="#CCFFCC">PC:</td>
    141. 

  141. 

  142.     <td WIDTH="50%" BGCOLOR="#CCFFCC"><b><tt>09 06 07 00 </tt></b><tt>06 00 00 
    143. 

  143.       00 00 01 7A <b>4C 00</b></tt></td>
    144. 

  144. 

  145. <td WIDTH="50%" BGCOLOR="#CCFFCC"><i>Variable Header: Expression "z"</i></td>
    146. 

  146. </tr>
    147. 

  147. 

  148. <tr>
    149. 

  149. <td BGCOLOR="#FFCCCC">TI:</td>
    150. 

  150. 

  151.     <td WIDTH="50%" BGCOLOR="#FFCCCC"><b><tt>89 56 00 00</tt></b></td>
    152. 

  152. 

  153. <td WIDTH="50%" BGCOLOR="#FFCCCC"><i>Acknowledgement of header</i></td>
    154. 

  154. </tr>
    155. 

  155. 

  156. <tr>
    157. 

  157. <td BGCOLOR="#FFCCCC">&nbsp;</td>
    158. 

  158. 

  159.     <td WIDTH="50%" BGCOLOR="#FFCCCC"><b><tt>89 09 00 00</tt></b></td>
    160. 

  160. 

  161. <td WIDTH="50%" BGCOLOR="#FFCCCC"><i>Clear to send variable</i></td>
    162. 

  162. </tr>
    163. 

  163. 

  164. <tr>
    165. 

  165. <td BGCOLOR="#CCFFCC">PC:</td>
    166. 

  166. 

  167.     <td WIDTH="50%" BGCOLOR="#CCFFCC"><b><tt>09 56 00 00</tt></b></td>
    168. 

  168. 

  169. <td WIDTH="50%" BGCOLOR="#CCFFCC"><i>Acknowledgement of CTS</i></td>
    170. 

  170. </tr>
    171. 

  171. 

  172. <tr>
    173. 

  173. <td BGCOLOR="#CCFFCC">&nbsp;</td>
    174. 

  174. 

  175.     <td WIDTH="50%" BGCOLOR="#CCFFCC"><b><tt>09 15 0A 00 </tt></b><tt>00 00 00 
    176. 

  176.       00 00 04 67 02 02 1F <b>8E 00</b></tt></td>
    177. 

  177. 

  178. <td WIDTH="50%" BGCOLOR="#CCFFCC"><i>Variable data: "6.28318530718"</i></td>
    179. 

  179. </tr>
    180. 

  180. 

  181. <tr>
    182. 

  182. <td BGCOLOR="#FFCCCC">TI:</td>
    183. 

  183. 

  184.     <td WIDTH="50%" BGCOLOR="#FFCCCC"><b><tt>89 56 00 00</tt></b></td>
    185. 

  185. 

  186. <td WIDTH="50%" BGCOLOR="#FFCCCC"><i>Acknowledgement of data</i></td>
    187. 

  187. </tr>
    188. 

  188. 

  189. <tr>
    190. 

  190. <td BGCOLOR="#CCFFCC">PC:</td>
    191. 

  191. 

  192.     <td WIDTH="50%" BGCOLOR="#CCFFCC"><b><tt>09 92 00 00</tt></b></td>
    193. 

  193. 

  194. <td WIDTH="50%" BGCOLOR="#CCFFCC"><i>End of transmission</i></td>
    195. 

  195. </tr>
    196. 

  196. 

  197. <tr>
    198. 

  198. <td BGCOLOR="#FFCCCC">TI:</td>
    199. 

  199. 

  200.     <td WIDTH="50%" BGCOLOR="#FFCCCC"><b><tt>89 56 00 00</tt></b></td>
    201. 

  201. 

  202. <td WIDTH="50%" BGCOLOR="#FFCCCC"><i>Acknowledgement of EOT</i></td>
    203. 

  203. </tr>
    204. 

  204. 

  205. <tr>
    206. 

  206. <td>&nbsp;</td>
    207. 

  207. 

  208. <td WIDTH="50%">&nbsp;</td>
    209. 

  209. 

  210. <td WIDTH="50%">&nbsp;</td>
    211. 

  211. </tr>
    212. 

  212. 

  213. <tr>
    214. 

  214. <td BGCOLOR="#CCFFCC">PC:</td>
    215. 

  215. 

  216.     <td WIDTH="50%" BGCOLOR="#CCFFCC"><b><tt>09 06 07 00 </tt></b><tt>06 00 00 
    217. 

  217.       00 00 01 79 <b>4B 00</b></tt></td>
    218. 

  218. 

  219. <td WIDTH="50%" BGCOLOR="#CCFFCC"><i>Variable Header: Expression "y"</i></td>
    220. 

  220. </tr>
    221. 

  221. 

  222. <tr>
    223. 

  223. <td BGCOLOR="#FFCCCC">TI:</td>
    224. 

  224. 

  225.     <td WIDTH="50%" BGCOLOR="#FFCCCC"><b><tt>89 56 00 00</tt></b></td>
    226. 

  226. 

  227. <td WIDTH="50%" BGCOLOR="#FFCCCC"><i>Acknowledgement of request</i></td>
    228. 

  228. </tr>
    229. 

  229. 

  230. <tr>
    231. 

  231. <td BGCOLOR="#FFCCCC">&nbsp;</td>
    232. 

  232. 

  233.     <td WIDTH="50%" BGCOLOR="#FFCCCC"><tt><b>89 36 05 00 </b>05 00 01 00 00 <b>06 
    234. 

  234.       00</b></tt></td>
    235. 

  235. 

  236. <td WIDTH="50%" BGCOLOR="#FFCCCC"><i>Out of memory</i></td>
    237. 

  237. </tr>
    238. 

  238. </table>
    239. 

  239. 

  240. <table BORDER=0 CELLSPACING=0 WIDTH="100%" >
    241. 

  241. <tr>
    242. 

  242. <td WIDTH="32%">
    243. 

  243. <center><a href="screenshot.html"><img SRC="graphics/prevpage.gif" ALT="[previous page]" BORDER=2 height=32 width=32 align=BOTTOM></a>
    244. 

  244. <br><a href="screenshot.html">Screenshots</a></center>
    245. 

  245. </td>
    246. 

  246. 

  247. <td WIDTH="34%">
    248. 

  248. <center><a href="index.html"><img SRC="graphics/home.gif" ALT="[home]" BORDER=2 height=32 width=32 align=BOTTOM></a>
    249. 

  249. <br><a href="index.html">Table of Contents</a></center>
    250. 

  250. </td>
    251. 

  251. 

  252. <td WIDTH="34%">
    253. 

  253. <center><a href="silent.html"><img SRC="graphics/nextpage.gif" ALT="[next page]" BORDER=2 height=32 width=32 align=BOTTOM></a>
    254. 

  254. <br><a href="silent.html">Silent Transfers</a></center>
    255. 

  255. </td>
    256. 

  256. </tr>
    257. 

  257. </table>
    258. 

  258. 

  259. <hr ALIGN="CENTER"><i>Site maintained by Romain Li&eacute;vin (<a href="mailto:roms@lpg.ticalc.org">roms@lpg.ticalc.org</a>)
    260. 

  260. and Tim Singer (<a href="mailto:tsinger@gladstone.uoregon.edu">tsinger@gladstone.uoregon.edu</a>)</i>
    261. 

  261. </body>
    262. 

  262. </html>
    263.