Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Direct_memory_access> ?p ?o }
- Direct_memory_access abstract "Direct memory access (DMA) is a feature of computer systems that allows certain hardware subsystems to access main system (RAM) memory independently of the central processing unit (CPU).Without DMA, when the CPU is using programmed input/output, it is typically fully occupied for the entire duration of the read or write operation, and is thus unavailable to perform other work. With DMA, the CPU first initiates the transfer, then it does other operations while the transfer is in progress, and it finally receives an interrupt from the DMA controller when the operation is done. This feature is useful at any time that the CPU cannot keep up with the rate of data transfer, or when the CPU needs to perform useful work while waiting for a relatively slow I/O data transfer. Many hardware systems use DMA, including disk drive controllers, graphics cards, network cards and sound cards. DMA is also used for intra-chip data transfer in multi-core processors. Computers that have DMA channels can transfer data to and from devices with much less CPU overhead than computers without DMA channels. Similarly, a processing element inside a multi-core processor can transfer data to and from its local memory without occupying its processor time, allowing computation and data transfer to proceed in parallel.DMA can also be used for "memory to memory" copying or moving of data within memory. DMA can offload expensive memory operations, such as large copies or scatter-gather operations, from the CPU to a dedicated DMA engine. An implementation example is the I/O Acceleration Technology.".
- Direct_memory_access thumbnail AMD_DirectGMA.svg?width=300.
- Direct_memory_access wikiPageExternalLink DMAFundamentals.pdf.
- Direct_memory_access wikiPageExternalLink 20140429-dma.pdf.
- Direct_memory_access wikiPageExternalLink dma_interrupt_handling.htm.
- Direct_memory_access wikiPageExternalLink ch15.pdf.
- Direct_memory_access wikiPageExternalLink modesDMA-c.html.
- Direct_memory_access wikiPageExternalLink ch13.html.
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- Direct_memory_access wikiPageRevisionID "676489529".
- Direct_memory_access wikiPageWikiLink 80386.
- Direct_memory_access wikiPageWikiLink AMD.
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- Direct_memory_access wikiPageWikiLink Advanced_Microcontroller_Bus_Architecture.
- Direct_memory_access wikiPageWikiLink Arbiter_(electronics).
- Direct_memory_access wikiPageWikiLink Blitter.
- Direct_memory_access wikiPageWikiLink Bounce_buffer.
- Direct_memory_access wikiPageWikiLink Bus_master.
- Direct_memory_access wikiPageWikiLink Bus_mastering.
- Direct_memory_access wikiPageWikiLink CPU_cache.
- Direct_memory_access wikiPageWikiLink Cache_(computing).
- Direct_memory_access wikiPageWikiLink Cache_coherence.
- Direct_memory_access wikiPageWikiLink Cache_coherency.
- Direct_memory_access wikiPageWikiLink Cache_invalidation.
- Direct_memory_access wikiPageWikiLink Category:Computer_memory.
- Direct_memory_access wikiPageWikiLink Category:Computer_storage_buses.
- Direct_memory_access wikiPageWikiLink Category:Motherboard.
- Direct_memory_access wikiPageWikiLink Cell_(microprocessor).
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- Direct_memory_access wikiPageWikiLink O.
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- Direct_memory_access wikiPageWikiLink DMA_attack.
- Direct_memory_access wikiPageWikiLink DRAM.
- Direct_memory_access wikiPageWikiLink Disk_drive.
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- Direct_memory_access wikiPageWikiLink Double_Address_Cycle.
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- Direct_memory_access wikiPageWikiLink Greg_Kroah-Hartman.
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- Direct_memory_access wikiPageWikiLink 2.
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- Direct_memory_access wikiPageWikiLink Infrared_Data_Association.
- Direct_memory_access wikiPageWikiLink output.
- Direct_memory_access wikiPageWikiLink Intel_80386.
- Direct_memory_access wikiPageWikiLink Intel_8237.
- Direct_memory_access wikiPageWikiLink Interrupt.
- Direct_memory_access wikiPageWikiLink Jonathan_Corbet.
- Direct_memory_access wikiPageWikiLink LWN.net.
- Direct_memory_access wikiPageWikiLink Larrabee_(microarchitecture).
- Direct_memory_access wikiPageWikiLink Linux_kernel.
- Direct_memory_access wikiPageWikiLink List_of_device_bandwidths.
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- Direct_memory_access wikiPageWikiLink MPSoC.
- Direct_memory_access wikiPageWikiLink Memory_address.
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- Direct_memory_access wikiPageWikiLink Multiprocessor-system-on-chip.
- Direct_memory_access wikiPageWikiLink Network_card.
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- Direct_memory_access wikiPageWikiLink Northbridge_(computing).
- Direct_memory_access wikiPageWikiLink 2.
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- Direct_memory_access wikiPageWikiLink Peripheral_Component_Interconnect.
- Direct_memory_access wikiPageWikiLink Physical_Address_Extension.
- Direct_memory_access wikiPageWikiLink Polling_(computer_science).
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- Direct_memory_access wikiPageWikiLink output.
- Direct_memory_access wikiPageWikiLink Remote_direct_memory_access.
- Direct_memory_access wikiPageWikiLink Schematic.
- Direct_memory_access wikiPageWikiLink Socket_AM2.
- Direct_memory_access wikiPageWikiLink Sound_card.
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- Direct_memory_access wikiPageWikiLink O.
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- Direct_memory_access wikiPageWikiLink System_on_a_chip.