DATA PROCESSOR INPUT/OUTPUT CONTROLLER

    公开(公告)号:CA1128209A

    公开(公告)日:1982-07-20

    申请号:CA337648

    申请日:1979-10-15

    Applicant: IBM

    Abstract: DATA PROCESSOR INPUT/OUTPUT CONTROLLER An I/O controller is provided for transferring data between a host processor and a plurality of I/O devices wherein the host processor generates a transfer command and each of the plurality of I/O devices generates multiple asynchronous service requests for transfer to the host processor. Control circuitry is provided for controlling the transfer of the service request from the plurality of I/O devices to the host processor. The control circuitry generates a host processor interrupt signal for application to the host processor, such that in response to the host processor interrupt signal, the host processor generates the transfer command to allow the control circuitry to transfer the service request to the host processor.

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