Apparatus and method for prefetching data to load buffers in a bridge between two buses in a computer

    公开(公告)号:GB2286910B

    公开(公告)日:1998-11-25

    申请号:GB9425462

    申请日:1994-12-16

    Applicant: INTEL CORP

    Abstract: A bridge circuit providing for efficient data transfer between a first bus and a second bus in a computer system. The bridge circuit receives an address indicating a memory location storing a data segment requested to be transferred from the first bus to the second bus. Fetch circuitry fetches the requested data from the first bus and prefetches one or more additional data segments stored in memory locations sequentially following the memory location storing the requested data. The prefetched data segments are stored in a buffer for immediate access by subsequent data transfer requests. Supply circuitry transfers each data segment from the buffer to the second bus in response to receiving an address corresponding to the particular data segment on the address input circuitry.

    Apparatus and method for prefetching data to load buffers in a bridge between two buses in a computer

    公开(公告)号:GB2286910A

    公开(公告)日:1995-08-30

    申请号:GB9425462

    申请日:1994-12-16

    Applicant: INTEL CORP

    Abstract: A bridge circuit adapted to be associated with first and second bus circuits 12, 18, includes a path including a plurality of line buffers (33, Fig 2) for storing data being read from the first bus to the second bus, and a circuit arrangement 57 - 60 for reading an amount of data sufficient to fill the storage space in a first line buffer beginning at a location depending on an address being read, and for completely filling a next line buffer with data from sequential addresses following the addresses of data placed in the first line buffer if read operations from the first line buffer occur in sequence. The buffering may be used to enhance data transfer rates between a PCI bus 12 and a DMA device residing on a secondary bus 18.

    Apparatus and method for prefetching data to load buffers in a bridge between two buses in a computer

    公开(公告)号:SG47015A1

    公开(公告)日:1998-03-20

    申请号:SG1996001997

    申请日:1994-12-16

    Applicant: INTEL CORP

    Abstract: A bridge circuit providing for efficient data transfer between a first bus and a second bus in a computer system. The bridge circuit receives an address indicating a memory location storing a data segment requested to be transferred from the first bus to the second bus. Fetch circuitry fetches the requested data from the first bus and prefetches one or more additional data segments stored in memory locations sequentially following the memory location storing the requested data. The prefetched data segments are stored in a buffer for immediate access by subsequent data transfer requests. Supply circuitry transfers each data segment from the buffer to the second bus in response to receiving an address corresponding to the particular data segment on the address input circuitry.

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