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Results tagged with dma
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user 76206
Direct memory access (DMA) is a feature of computerized systems that allows certain hardware subsystems to access main system memory independently of the central processing unit (CPU).
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Does a CPU completely freeze when using a DMA?
You are correct that the CPU cannot be accessing the memory during a DMA transfer. … The device performing the DMA transfer is significantly slower than the CPU speed, so the CPU will not need to halt on every instruction but just occasionally when the DMA device is accessing the memory …
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