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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 21,44,1 / IOCTL,1 - Set Device Information</title>
+<meta name="FORMATTER" content="Microsoft FrontPage 2.0">
+</head>
+
+<body>
+
+<h1><a name="kap_interrupt_2120"></a>INT 21,44,1 / IOCTL,1 - Set
+Device Information</h1>
+
+<p> AH = 44h</p>
+
+<p> AL = 01</p>
+
+<p> BX = handle</p>
+
+<p> DH = must be zero</p>
+
+<p> DL = device data low order byte (see below)</p>
+
+<p> on return</p>
+
+<p> AX = error code if CF set</p>
+
+<p> DX = device information (see below)</p>
+
+<p> - applicable to character devices only</p>
+
+<p> - allows setting of device data word for character devices</p>
+
+<p> - usually used to change from binary to translated I/O</p>
+
+<p> - handle in BX must be an opened file or device</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>