LDMA Hooglant
LDMA may refer to: * Linked direct memory access, a type of direct memory access controllers * Louisiana Digital Media Archive, an archive containing the state archives' multimedia and public broadcasting collections * Lost Dutchman's Mining Association, see Stanton, Arizona Stanton is a populated place in Yavapai County, Arizona, United States that is now used as an RV park. The town was originally a stagecoach stop known as Antelope Station, and was later renamed "Stanton" after the businessman and crook Chuck St ... * Left-Democratic Manch, Assam, see Revolutionary Communist Party of India {{disamb ...
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Linked Direct Memory Access
Direct memory access (DMA) is a feature of computer systems and allows certain hardware subsystems to access main system 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 (DMAC) 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 work while waiting for a relatively slow I/O data transfer. Many hardware systems use DMA, including Disk storage, disk drive controllers, Video card, graphics cards, Network interface controller, network cards and sound cards. DMA is also used for intra-chip data transfer in multi ...
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