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65 lines
2.0 KiB
65 lines
2.0 KiB
15 years ago
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<?xml version="1.0" ?>
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<!DOCTYPE article PUBLIC "-//KDE//DTD DocBook XML V4.2-Based Variant V1.1//EN"
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"dtd/kdex.dtd" [
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<!ENTITY % addindex "IGNORE">
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<!ENTITY % English "INCLUDE" > <!-- change language only here -->
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]>
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<article lang="&language;">
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<title><acronym>DMA</acronym> Channel Information</title>
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<articleinfo>
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<authorgroup>
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<author>&Matthias.Hoelzer-Kluepfel;</author>
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<author>&Helge.Deller;</author>
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<author>&Duncan.Haldane;</author>
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<author>&Mike.McBride;</author>
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<!-- TRANS:ROLES_OF_TRANSLATORS -->
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</authorgroup>
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<date>2002-02-12</date>
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<releaseinfo>3.00.00</releaseinfo>
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<keywordset>
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<keyword>KDE</keyword>
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<keyword>KControl</keyword>
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<keyword>DMA</keyword>
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<keyword>system information</keyword>
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</keywordset>
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</articleinfo>
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<sect1>
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<title><acronym>DMA</acronym> Channel Information</title>
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<para> This page displays information about the <acronym>DMA</acronym>
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(Direct Memory Access) Channels. A <acronym>DMA</acronym> channel is a
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direct connection that allows devices to transfer data to and from
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memory without going through the processor. Typically, i386-architecture
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systems (<acronym>PC</acronym>'s) have eight <acronym>DMA</acronym>
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channels (0-7). </para>
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<note> <para> The exact information displayed is system-dependent. On
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some systems, <acronym>DMA</acronym> Channel information cannot be
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displayed yet. </para> </note>
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<para> On &Linux;, this information is read from <filename
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class="devicefile">/proc/dma</filename>, which is only available if the
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<filename class="directory">/proc</filename> pseudo-filesystem is
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compiled into the kernel. </para>
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<para> A list of all currently-registered (<acronym>ISA</acronym> bus)
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<acronym>DMA</acronym> channels that are in use is shown. The first
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column shows the <acronym>DMA</acronym> channel, and the second column
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shows the device which uses that channel. </para>
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<para>
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Unused <acronym>DMA</acronym> channels are not listed.
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</para>
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<para>
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The user cannot modify any settings on this page.
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</para>
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</sect1>
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</article>
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