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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 1A,6 - Set Real Time Clock Alarm (XT 286,AT,PS/2)</title>
+<meta name="FORMATTER" content="Microsoft FrontPage 2.0">
+</head>
+
+<body>
+
+<h1><a name="kap_interrupt_1300"></a>INT 1A,6 - Set Real Time
+Clock Alarm (XT 286,AT,PS/2)</h1>
+
+<p> AH = 06</p>
+
+<p> CH = hours in BCD</p>
+
+<p> CL = minutes in BCD</p>
+
+<p> DH = seconds in BCD</p>
+
+<p> on return:</p>
+
+<p> CF = 1 if alarm already set or clock inoperable</p>
+
+<p> - alarm setting is not relative like some sources claim, but
+the</p>
+
+<p> actually clock time the interrupt should occur</p>
+
+<p> - settings values must be in BCD</p>
+
+<p> - when the alarm time is reached ~INT 4A~ is executed</p>
+
+<p> - INT 4A vector should be replaced with address of the alarm</p>
+
+<p> handling interrupt routine before setting the alarm</p>
+
+<p> - ~INT 1A,7~ should be called to disable the ~RTC~ alarm</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>