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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<TITLE>VT100.net: Digital VT102 User Guide</TITLE>
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<DIV CLASS="navbar"><A HREF="http://vt100.net/"><IMG CLASS="button" SRC="vt100.net-logo.png" ALT="VT100.net" HEIGHT="16" WIDTH="102"></A> VT102 User Guide<TABLE WIDTH="100%">
<COL SPAN="3" WIDTH="33%">
<TBODY>
<TR>
<TD ALIGN="LEFT"><A HREF="chapter4.html">Chapter 4</A></TD>
<TD ALIGN="CENTER"><A HREF="contents.html">Contents</A></TD>
<TD ALIGN="RIGHT">&nbsp;</TD>
</TR>
</TBODY>
</TABLE>
<HR></DIV>
<TABLE ID="T4-2" CLASS="majortable" FRAME="VOID" RULES="GROUPS" CELLSPACING="0" CELLPADDING="4" BORDERCOLOR="#ffffff">
<CAPTION>Table 4-2 Control Codes Generated</CAPTION>
<THEAD>
<TR VALIGN="BOTTOM">
<TH>Control Character</TH>
<TH>Mnemonic</TH>
<TH>Transmitted Code (Octal)</TH>
<TH>Key Pressed with CTRL</TH>
<TH>Dedicated Key</TH>
</TR>
</THEAD>
<TBODY>
<TR VALIGN="TOP">
<TD>Null</TD>
<TD>NUL</TD>
<TD>000</TD>
<TD>Space Bar</TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Start of heading</TD>
<TD>SOH</TD>
<TD>001</TD>
<TD><SPAN CLASS="keyname">A</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Start of text</TD>
<TD>STX</TD>
<TD>002</TD>
<TD><SPAN CLASS="keyname">B</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>End of text</TD>
<TD>ETX</TD>
<TD>003</TD>
<TD><SPAN CLASS="keyname">C</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>End of transmission</TD>
<TD>EOT</TD>
<TD>004</TD>
<TD><SPAN CLASS="keyname">D</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Enquire</TD>
<TD>ENQ</TD>
<TD>005</TD>
<TD><SPAN CLASS="keyname">E</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Acknowledge</TD>
<TD>ACK</TD>
<TD>006</TD>
<TD><SPAN CLASS="keyname">F</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Bell</TD>
<TD>BEL</TD>
<TD>007</TD>
<TD><SPAN CLASS="keyname">G</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Back space</TD>
<TD>BS</TD>
<TD>010</TD>
<TD><SPAN CLASS="keyname">H</SPAN></TD>
<TD><SPAN CLASS="keyname">BACK SPACE</SPAN></TD>
</TR>
<TR VALIGN="TOP">
<TD>Horizontal tabulation</TD>
<TD>HT</TD>
<TD>011</TD>
<TD><SPAN CLASS="keyname">I</SPAN></TD>
<TD><SPAN CLASS="keyname">TAB</SPAN></TD>
</TR>
<TR VALIGN="TOP">
<TD>Linefeed</TD>
<TD>LF</TD>
<TD>012</TD>
<TD><SPAN CLASS="keyname">J</SPAN></TD>
<TD><SPAN CLASS="keyname">LINE FEED</SPAN></TD>
</TR>
<TR VALIGN="TOP">
<TD>Vertical tabulation</TD>
<TD>VT</TD>
<TD>013</TD>
<TD><SPAN CLASS="keyname">K</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Form feed</TD>
<TD>FF</TD>
<TD>014</TD>
<TD><SPAN CLASS="keyname">L</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Carriage return</TD>
<TD>CR</TD>
<TD>015</TD>
<TD><SPAN CLASS="keyname">M</SPAN></TD>
<TD><SPAN CLASS="keyname">RETURN</SPAN>*</TD>
</TR>
<TR VALIGN="TOP">
<TD>Shift out</TD>
<TD>SO</TD>
<TD>016</TD>
<TD><SPAN CLASS="keyname">N</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Shift in</TD>
<TD>SI</TD>
<TD>017</TD>
<TD><SPAN CLASS="keyname">O</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Data link escape</TD>
<TD>DLE</TD>
<TD>020</TD>
<TD><SPAN CLASS="keyname">P</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Device control 1</TD>
<TD>DC1 (XON)</TD>
<TD>021</TD>
<TD><SPAN CLASS="keyname">Q</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Device control 2</TD>
<TD>DC2</TD>
<TD>022</TD>
<TD><SPAN CLASS="keyname">R</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Device control 3</TD>
<TD>DC3 (XOFF)</TD>
<TD>023</TD>
<TD><SPAN CLASS="keyname">S</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Device control 4</TD>
<TD>DC4</TD>
<TD>024</TD>
<TD><SPAN CLASS="keyname">T</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Negative acknowledge</TD>
<TD>NAK</TD>
<TD>025</TD>
<TD><SPAN CLASS="keyname">U</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Synchronous idle</TD>
<TD>SYN</TD>
<TD>026</TD>
<TD><SPAN CLASS="keyname">V</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>End of transmission block</TD>
<TD>ETB</TD>
<TD>027</TD>
<TD><SPAN CLASS="keyname">W</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Cancel of previous word or character</TD>
<TD>CAN</TD>
<TD>030</TD>
<TD><SPAN CLASS="keyname">X</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>End of medium</TD>
<TD>EM</TD>
<TD>031</TD>
<TD><SPAN CLASS="keyname">Y</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Substitute</TD>
<TD>SUB</TD>
<TD>032</TD>
<TD><SPAN CLASS="keyname">Z</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Escape</TD>
<TD>ESC</TD>
<TD>033</TD>
<TD><SPAN CLASS="keyname">[</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>File separator</TD>
<TD>FS</TD>
<TD>034</TD>
<TD><SPAN CLASS="keyname">\</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Group separator</TD>
<TD>GS</TD>
<TD>035</TD>
<TD><SPAN CLASS="keyname">]</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Record separator</TD>
<TD>RS</TD>
<TD>036</TD>
<TD><SPAN CLASS="keyname">~</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Unit separator</TD>
<TD>US</TD>
<TD>037</TD>
<TD><SPAN CLASS="keyname">?</SPAN></TD>
<TD>-</TD>
</TR>
<TR VALIGN="TOP">
<TD>Delete</TD>
<TD>DEL</TD>
<TD>177</TD>
<TD>&nbsp;</TD>
<TD><SPAN CLASS="keyname">DELETE</SPAN></TD>
</TR>
</TBODY>
<TBODY>
<TR>
<TD COLSPAN="5">* The numeric keypad mode determines whether <SPAN CLASS="keyname">RETURN</SPAN> and <SPAN CLASS="keyname">ENTER</SPAN> generate the same control codes. The
codes generated by <SPAN CLASS="keyname">RETURN</SPAN> are changed by two feature selections:
<UL>
<LI><P>The auto turnaround SET-UP feature when using half-duplex coded control (HDX B). The turnaround/disconnect
SET-UP feature selected the turnaround character. If the turnaround character is carriage
return (CR), the terminal transmits only one CR when you press <SPAN CLASS="keyname">RETURN</SPAN>.</P></LI>
<LI><P>The line feed/new line feature. When this feature is on, <SPAN CLASS="keyname">RETURN</SPAN> generates two characters (CR, LF). When
this feature is off, <SPAN CLASS="keyname">RETURN</SPAN> generates a CR.</P></LI>
</UL></TD>
</TR>
</TBODY>
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<TD ALIGN="LEFT"><A HREF="chapter4.html">Chapter 4</A></TD>
<TD ALIGN="CENTER"><A HREF="contents.html">Contents</A></TD>
<TD ALIGN="RIGHT">&nbsp;</TD>
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