64 lines
1.5 KiB
HTML
64 lines
1.5 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 15,C3 - Enable/Disable Watchdog Timer (PS/2)</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_1050"></a>INT 15,C3 - Enable/Disable
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Watchdog Timer (PS/2)</h1>
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<p> AH = C3</p>
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<p> AL = 0 disable watchdog time-out</p>
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<p> = 1 enable watchdog time-out</p>
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<p> BX = watchdog timer count (1-255)</p>
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<p> on return:</p>
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<p> CF = 0 if successful</p>
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<p> = 1 if error</p>
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<p> AH = when CF set, 80h for PC & PCjr, 86h for XT, AT &
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Model 30</p>
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<p> - the watchdog timer is available only on PS/2 with 80286 and</p>
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<p> 80386 processors.</p>
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<p> - the ~timer~ uses channel timer channel 3 and IRQ0.
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Activated</p>
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<p> when IRQ0 is active for more than one channel 0 timer cycle,</p>
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<p> which causes the timer to be decremented. When the watch-</p>
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<p> dog timer reaches 0, and NMI is generated.</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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