Annotated edit history of
DMA version 2, including all changes.
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JohnMcPherson |
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An [Acronym] for __D__irect __M__emory __A__ccess |
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AristotlePagaltzis |
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A method for peripherals (eg [PCI] and [IDE] devices) to copy data directly into a memory buffer, rather than explicitly being copied by the [CPU]. For example, SoundCard~s like the famous SB16 used to use [DMA], although the drivers generally don't bother any more. It can significantly speed up data transfers for HardDisk~s and [CDROM]s. |
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JohnMcPherson |
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See also: |
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AristotlePagaltzis |
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* <tt>/proc/dma</tt> (shows you "DMA channels" (used by PCI cards?)) |
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* hdparm(8) |
