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- Q1017659 subject Q7112360.
- Q1017659 subject Q7466576.
- Q1017659 abstract "In computing, bus mastering is a feature supported by many bus architectures that enables a device connected to the bus to initiate transactions. It is also referred to as "first-party DMA", in contrast with "third-party DMA" where a system DMA controller (also known as peripheral processor, I/O processor, or channel) actually does the transfer.Some types of buses allow only one device (typically the CPU, or its proxy) to initiate transactions. Most modern bus architectures, such as PCI, allow multiple devices to bus master because it significantly improves performance for general purpose operating systems. Some real-time operating systems prohibit peripherals from becoming bus masters, because the scheduler can no longer arbitrate for the bus and hence cannot provide deterministic latency.While bus mastering theoretically allows one peripheral device to directly communicate with another, in practice almost all peripherals master the bus exclusively to perform DMA to main memory.If multiple devices are able to master the bus, there needs to be a bus arbitration scheme to prevent multiple devices attempting to drive the bus simultaneously. A number of different schemes are used for this; for example SCSI has a fixed priority for each SCSI ID. PCI does not specify the algorithm to use, leaving it up to the implementation to set priorities.".
- Q1017659 wikiPageExternalLink BUSMastering.html.
- Q1017659 wikiPageExternalLink howbusmaster.
- Q1017659 wikiPageWikiLink Q178048.
- Q1017659 wikiPageWikiLink Q179310.
- Q1017659 wikiPageWikiLink Q191012.
- Q1017659 wikiPageWikiLink Q210813.
- Q1017659 wikiPageWikiLink Q213666.
- Q1017659 wikiPageWikiLink Q220868.
- Q1017659 wikiPageWikiLink Q5300.
- Q1017659 wikiPageWikiLink Q7112360.
- Q1017659 wikiPageWikiLink Q7466576.
- Q1017659 wikiPageWikiLink Q844006.
- Q1017659 wikiPageWikiLink Q9135.
- Q1017659 comment "In computing, bus mastering is a feature supported by many bus architectures that enables a device connected to the bus to initiate transactions. It is also referred to as "first-party DMA", in contrast with "third-party DMA" where a system DMA controller (also known as peripheral processor, I/O processor, or channel) actually does the transfer.Some types of buses allow only one device (typically the CPU, or its proxy) to initiate transactions.".
- Q1017659 label "Bus mastering".