DMATransfers
DMATransfers, short for direct memory access transfers, are a method for moving data between an input/output device and system memory without continuous CPU intervention. A DMA-capable device and a DMA controller coordinate to perform the transfer, allowing the CPU to perform other tasks while the data move occurs in the background.
A DMA transfer involves the device signaling a DMA request to the DMA controller. The system bus
Common transfer modes include burst mode, where the bus is used for a block of data, and
Advantages of DMATransfers include reduced CPU overhead, increased data throughput, and suitability for bulk I/O such
History and context: DMA became prominent in PC architectures with early controllers like the Intel 8237, but