<sect1 id="dma">
<sect1info>

<authorgroup>
<author>

<firstname>Matthias</firstname>
<surname>H&ouml;lzer</surname>
</author>

<author>
<firstname>Helge</firstname>
<surname>Deller</surname>
</author>

<author>
<firstname>Duncan</firstname>
<surname>Haldane</surname>
</author>

<author>
<firstname>Mike</firstname>
<surname>McBride</surname>
</author>
</authorgroup>

<date>21/10/2000</date>
<releaseinfo>1.00.00</releaseinfo>

<keywordset>
<keyword>KDE</keyword>
<keyword>KControl</keyword>
<keyword>DMA</keyword>
<keyword>system information</keyword>
</keywordset>
</sect1info>
<title>DMA Channel Information</title>

<para>This page displays information about the <abbrev>DMA</abbrev> (Direct
Memory Access) Channels.  A <abbrev>DMA</abbrev> channel is a direct connection
that allows devices to transfer data to and from memory without going through
the processor. Typically, i386-architecture systems (PC's) have eight
<abbrev>DMA</abbrev> channels (0-7).</para>

<note><para>The exact information displayed is system-dependent.  On some
systems, <abbrev>DMA</abbrev> Channel information cannot be displayed
yet.</para></note>

<para>On Linux, this information is read from <filename>/proc/dma</filename>,
which is only available if the <filename>/proc</filename> pseudo-filesystem is
compiled into the kernel.</para>

<para>A list of all currently-registered (<abbrev>ISA</abbrev> bus)
<abbrev>DMA</abbrev> channels that are in use is shown. The first column shows
the <abbrev>DMA</abbrev> channel, and the second column shows the device which
uses that channel.</para>

<para>Unused <abbrev>DMA</abbrev> channels are not listed.</para>
<para>The user cannot modify any settings on this page.</para>


<sect2 id="dma-author">
<title>Section Authors</title>
<para>
Matthias H&ouml;lzer <email>hoelzer@kde.org</email>, 
Helge Deller <email>helge.deller@ruhruni-bochum.de</email>, 
Duncan Haldane <email>duncan@kde.org</email>,and
Michael McBride <email>mpmcbride7@yahoo.com</email></para>
</sect2>
</sect1>
