DMA
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[Computer Architecture] DMA(Direct Memory Access)CSE/Computer Architecture 2015. 6. 12. 15:58
DMA(Direct Memory Access) Direct memory access (DMA) is a feature of computerized systems that allows certain hardware subsystems to access main system memory independently of the CPU. Without DMA, when the CPU is using programmed I/O, 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 initiates ..