53 lines
1.4 KiB
HTML
53 lines
1.4 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,F8 - Set OEM Int 21 Handler (functions F9-FF,
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Undocumented)</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_2800"></a>INT 21,F8 - Set OEM Int 21
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Handler (functions F9-FF, Undocumented)</h1>
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<p> AH = F8</p>
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<p> DS:DX = pointer to OEM handler for INT 21H calls F9 through
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FF</p>
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<p> = FFFF:FFFF to reset to original handlers</p>
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<p> - DOS is set up to allow ONE handler for all 7 function
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calls.</p>
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<p> Any call to these handlers will set the CF and AX</p>
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<p> will contain 1 if they are not initialized. The handling</p>
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<p> routine is passed all registers just as the user set them.</p>
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<p> The handler should exit with an ~IRET~.</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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