70 lines
1.7 KiB
HTML
70 lines
1.7 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 15,87 - Move Block to/from Extended Memory</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_0970"></a>INT 15,87 - Move Block
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to/from Extended Memory</h1>
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<p> AH = 87h</p>
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<p> CX = word count of block to be moved</p>
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<p> ES:SI = pointer to Global Descriptor Table (~GDT~)</p>
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<p> on return:</p>
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<p> CF = 0 if successful (AH contains return code)</p>
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<p> = 1 if error detected</p>
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<p> AH = 0 operation successful (ZF also set)</p>
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<p> = 1 RAM parity error (if CF set)</p>
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<p> = 2 other exception (if CF set)</p>
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<p> = 3 gate address on line 20h failed (if CF set)</p>
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<p> = 80h on PC and PCjr (if CF set)</p>
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<p> = 86h on XT and newer 808x machines (if CF set)</p>
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<p> - transfers data blocks to and from extended memory on 80286</p>
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<p> and 80386 machines by switching from real to protected mode</p>
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<p> for the duration of the transfer</p>
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<p> - all real mode interrupts are disabled</p>
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<p> - processor shuts down during the switch from protected mode</p>
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<p> to real mode on 286 processors</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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