Direct memory access controlled system

Details Direct memory access controlled system Direct memory access controlled system

1988-01-12

1991-05-14

Shaw, Gareth D.

Boots, shoes, and leggings

3642423, 36424232, 3642426, 3642428, G06F 1300

Patent

active

050161652

ABSTRACT:
A direct memory access (DMA) controlled system which performs DMA data transfer between a main memory, a cache memory, and disk memories while exchanging DMA transfer requests and acknowledgements among disk control units, a memory-to-memory transfer control unit, and a common DMA control unit. The data transfer speed between the main memory and the cache memory is variable according to the load condition of the DMA control unit for the disk memories, enabling the transfer capability of the DMA control unit to be kept at a continually high level.

REFERENCES:
patent: 4502117 (1985-02-01), Kihara
patent: 4688166 (1987-08-01), Schneider
An Introduction to Microcomputers, Adam Osborne, 1980, pp. 5-67 to 5-88.

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