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An [Acronym] for __D__irect __M__emory __A__ccess 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]. -- ''AddToMe -- Is this factually correct? -- JohnMcPherson''. For example, sound cards used to use DMA, although the drivers generally don't bother any more. (The famous sb16 did, at least). It can significantly speed up data transfers for [HardDisk]s and [CDROM]s. UDMA (__U__ltra DMA) specifies a couple of faster transfer rates over standard DMA. See also: */proc/dma [[shows you "DMA channels" (used by PCI cards?)] hdparm(8), [HowToUltraDMA]
6 pages link to
DMA
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CDWritingNotes
UDMA
Pointer
LiloErrorCodes
TvTunerCards
IvTvNotes
