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What is Understanding Direct Memory Access (DMA) about?

This document summarizes a lecture on direct memory access (DMA). It discusses how programmed I/O is not suitable for high-speed data transfers as it requires many CPU instructions. DMA allows direct transfer of data between an I/O device and memory without continuous CPU intervention using a DMA controller. The DMA controller initializes registers with the memory address, word count, and I/O device data address before performing multi-word data transfers in block mode for maximum speed. After a transfer co

Author

Vansh Jain

Language

EN