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The Intel 8257 is a
8257/8257-5 Programmable DMA Controller
(PDF; 2,2 MB). * NEC Electronics (Europe) GmbH, 1982 Catalog, p. 665–674
. Intel chipsets Input/output integrated circuits {{comp-hardware-stub
The Intel 8257 is a direct memory access
Direct memory access (DMA) is a feature of computer systems and allows certain hardware subsystems to access main system memory independently of the central processing unit (CPU).
Without DMA, when the CPU is using programmed input/output, it is ...
(DMA) controller, a part of the MCS 85 microprocessor family. The chip is supplied in 40-pin DIP package.
External links
* Intel8257/8257-5 Programmable DMA Controller
(PDF; 2,2 MB). * NEC Electronics (Europe) GmbH, 1982 Catalog, p. 665–674
. Intel chipsets Input/output integrated circuits {{comp-hardware-stub