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<H3><A NAME="s4">4. Information about the DMA channels.</A></H3>

<P>This page displays information about the DMA (Direct Memory
Access) Channels.  A DMA 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 DMA channels (0-7).  
<P>The exact information displayed is system-dependent. 
On some systems, DMA Channel information cannot be displayed yet.
<P>On Linux this information is read from <CODE>/proc/dma</CODE>,
which is only available if the <CODE>/proc</CODE> pseudo-filesystem is  compiled into the kernel.
A list of all currently-registered (ISA bus) DMA channels that are in use is shown.
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