64 lines
1.6 KiB
HTML
64 lines
1.6 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type"
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content="text-html; charset=Windows-1252">
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<title>INT 21,33 - Get/Set System Values (Ctl-Break/Boot Drive)</title>
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<meta name="FORMATTER" content="Microsoft FrontPage 2.0">
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</head>
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<body>
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<h1><a name="kap_interrupt_1930"></a>INT 21,33 - Get/Set System
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Values (Ctl-Break/Boot Drive)</h1>
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<p> AH = 33h</p>
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<p> AL = 00 to get Ctrl-Break checking flag</p>
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<p> = 01 to set Ctrl-Break checking flag</p>
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<p> = 02 to set extended Ctrl-Break checking</p>
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<p> = 05 get boot drive (DOS 4.x)</p>
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<p> DL = 00 to set Ctrl-Break checking off</p>
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<p> = 01 to set Ctrl-Break checking on</p>
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<p> = boot drive for subfunction 5; (1=A:, 2=B:, ...)</p>
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<p> on return:</p>
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<p> DL = 00 Ctrl-Break checking OFF (AL=0 or AL=2)</p>
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<p> = 01 Ctrl-Break checking ON (AL=0 or AL=2)</p>
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<p> = boot drive number (1-26, A: - Z:) (function 05)</p>
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<p> - retrieves DOS Ctrl-Break or extended Ctrl-Break setting
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which</p>
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<p> determines if DOS will check for Ctrl-Break during INT 21
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calls</p>
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<hr>
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<table border="0" width="100%" cols="3">
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<tr>
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<td width="33%">Zurück zum <a href="inte1at0.htm">Interrupt
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Info</a>. </td>
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<td align="center" width="33%"><a
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href="mailto:Roger.Morgan@htl-steyr.ac.at">Roger Morgan</a>
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/ 1998 </td>
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<td align="right" width="33%"><font size="1">L.Änderung <!--webbot
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bot="Timestamp" s-type="EDITED" s-format="%d.%m.%y"
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startspan -->29.03.99<!--webbot bot="Timestamp" endspan
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i-checksum="13964" --> </font></td>
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</tr>
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</table>
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</body>
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</html>
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