57 lines
1.3 KiB
HTML
57 lines
1.3 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 1A,4 - Read Real Time Clock Date (XT 286,AT,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_1280"></a>INT 1A,4 - Read Real Time
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Clock Date (XT 286,AT,PS/2)</h1>
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<p> AH = 04</p>
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<p> on return:</p>
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<p> CH = century in BCD (decimal 19 or 20)</p>
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<p> CL = year in BCD</p>
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<p> DH = month in BCD</p>
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<p> DL = day in BCD</p>
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<p> CF = 0 if successful</p>
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<p> = 1 if error or clock not operating</p>
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<p> - calling this interrupt will update the DOS maintained date
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and</p>
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<p> reset the ~BIOS Data Area~ date rollover flag at 40:70</p>
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<p> - see ~RTC~</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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