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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<meta http-equiv="Content-Type"
content="text-html; charset=Windows-1252">
<title>INT 21,F - Open a File Using FCB</title>
<meta name="FORMATTER" content="Microsoft FrontPage 2.0">
</head>
<body>
<h1><a name="kap_interrupt_1610"></a>INT 21,F - Open a File Using
FCB</h1>
<p> AH = 0F</p>
<p> DS:DX = pointer to unopened ~FCB~</p>
<p> on return:</p>
<p> AL = 00 if file opened</p>
<p> = FF if unable to open</p>
<p> - opens an existing file using a previously setup FCB</p>
<p> - the FCB fields drive identifier, filename and extension</p>
<p> must be filled in before call</p>
<p> - sets default FCB fields; current block number is set to 0;</p>
<p> record size is set to 80h; file size, date and time are set</p>
<p> to the values from the directory</p>
<p> - does not create file, see ~INT 21,16~</p>
<p> - DOS 2.x allows opening of subdirectories, DOS 3.x does not</p>
<hr>
<table border="0" width="100%" cols="3">
<tr>
<td width="33%">Zur<EFBFBD>ck zum <a href="inte1at0.htm">Interrupt
Info</a>. </td>
<td align="center" width="33%"><a
href="mailto:Roger.Morgan@htl-steyr.ac.at">Roger Morgan</a>
/ 1998 </td>
<td align="right" width="33%"><font size="1">L.<2E>nderung <!--webbot
bot="Timestamp" s-type="EDITED" s-format="%d.%m.%y"
startspan -->29.03.99<!--webbot bot="Timestamp" endspan
i-checksum="13964" --> </font></td>
</tr>
</table>
</body>
</html>