90 lines
2.1 KiB
HTML
90 lines
2.1 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 67,5B - Alternate Map Register Set (LIM EMS 4.</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_3810"></a>INT 67,5B - Alternate Map
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Register Set (LIM EMS 4.0+)</h1>
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<p> AH = 5B</p>
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<p> AL = 00 get alternate map register set</p>
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<p> 01 set alternate map register set</p>
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<p> BL = new alternate map register set number</p>
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<p> ES:DI = pointer to map register context save area if BL=0</p>
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<p> 02 get alternate map save array size</p>
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<p> 03 allocate alternate map register set</p>
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<p> 04 deallocate alternate map register set</p>
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<p> BL = number of alternate map register set</p>
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<p> 05 allocate DMA register set</p>
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<p> 06 enable DMA on alternate map register set</p>
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<p> BL = DMA register set number</p>
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<p> DL = DMA channel number</p>
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<p> 07 disable DMA on alternate map register set</p>
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<p> BL = DMA register set number</p>
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<p> 08 deallocate DMA register set</p>
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<p> BL = DMA register set number</p>
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<p> on return:</p>
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<p> AH = status (see ~EMS STATUS~)</p>
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<p> BL = active alternate map register set number if nonzero
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(AL=0)</p>
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<p> = number of alternate map register set; 0 if not supported
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(AL=3)</p>
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<p> = DMA register set number; zero if not supported (AL = 05)</p>
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<p> DX = array size in bytes (AL = 02)</p>
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<p> ES:DI = pointer to a map register context save area if BL=0
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(AL=0)</p>
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<p> - for use by operating systems only; can be enabled or
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disabled</p>
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<p> at any time by the operating system</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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