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Unformatted text preview: since the sound card can process the data itself it can use DMA to bypass the CPU. The purpose of DMA is to enable certain hardware subsystems within the computer access to the systems memory independently outside of the CPU. When transferring data to devices DMA becomes very useful because it allows the CPU to perform other functions while the transfer is in progress. In order for devices to use DMA devices must support direct memory access and they must also be assigned a DMA channel....
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- Spring '09