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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]. 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. See also: * <tt>/proc/dma</tt> (shows you "DMA channels" (used by PCI cards?)) * hdparm(8)
6 pages link to
DMA
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CDWritingNotes
UDMA
Pointer
LiloErrorCodes
TvTunerCards
IvTvNotes
