Direct memory access controlled system
    3.
    发明授权
    Direct memory access controlled system 失效
    直接内存访问控制系统

    公开(公告)号:US5016165A

    公开(公告)日:1991-05-14

    申请号:US142949

    申请日:1988-01-12

    CPC分类号: G06F13/30

    摘要: 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.