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    Semaphore in system I/O space
    3.
    发明公开
    Semaphore in system I/O space 审中-公开
    I / O-Raum中的信号

    公开(公告)号：EP0898227A1

    公开(公告)日：1999-02-24

    申请号：EP98306458.5

    申请日：1998-08-13

    Applicant: Compaq Computer Corporation

    Inventor： Tavallaei, Siamak ,  Autor, Jeffrey S.

    IPC: G06F9/46

    CPC classification number: G06F9/52 ,  G06F2209/503

    Abstract: A computer system utilizing multiple processes includes a semaphore for controlling exclusive access of a single process to a selected resource. The semaphore is implemented in the system input/output and controlled, at least in part, by an application specific integrated circuit (ASIC). When a process is attempting to acquire an I/O resource, a read is sent to the semaphore. If the resource is available the semaphore will have a first value, and the semaphore will return that first value to the process indicating that the process has acquired the resource. The ASIC will then change the semaphore value to a second value. If the resource is not available the semaphore will have the second value, and the semaphore will return the second value to the process indicating that the resource is not available.

    Abstract translation: 利用多个进程的计算机系统包括用于控制单个进程对所选资源的独占访问的信号量。 信号量在系统输入/输出中实现，至少部分由专用集成电路（ASIC）控制。 当进程尝试获取I / O资源时，会将读取信息发送到信号量。 如果资源可用，则信号量将具有第一个值，并且信号量将将该第一个值返回给指示进程已获取资源的进程。 然后，ASIC将信号量值更改为第二个值。 如果资源不可用，信号量将具有第二个值，并且信号量将返回第二个值到进程，指示该资源不可用。

    Fault isolation
    4.
    发明公开
    Fault isolation 失效
    Fehlereingrenzung

    公开(公告)号：EP0820012A2

    公开(公告)日：1998-01-21

    申请号：EP97303790.6

    申请日：1997-06-04

    Applicant: Compaq Computer Corporation

    Inventor： Goodrum, Alan L. ,  Autor, Jeffrey S. ,  Culley, Paul R. ,  Miller, Joseph P. ,  Tavallaei, Siamak ,  Basile, Barry S. ,  Richard, Elizabeth A. ,  Rose, Eric E.

    IPC: G06F11/273

    CPC classification number: G06F11/2005 ,  G06F11/0757 ,  G06F11/10 ,  G06F11/2007 ,  G06F11/2012 ,  G06F11/221 ,  G06F11/2221 ,  G06F11/349

    Abstract: A device causing a faulty condition in a computer system having devices is isolated by detecting for a faulty condition associated with the devices and identifying the device causing the faulty condition. The devices are coupled to a bus. The faulty condition includes a bus hang condition. The devices are turned off when a bus hang condition is detected. The devices are then turned back on to test the devices. Each device is tested by writing and reading its configuration space. Information on the bus associated with the faulty condition is stored. The stored information is retrieved after the faulty condition has occurred, with the stored information including address, data, and bus control information.

    Abstract translation: 在具有设备的计算机系统中导致故障状态的设备通过检测与设备相关联的故障状况并识别引起故障状态的设备而被隔离。 这些设备耦合到总线。 故障状况包括总线挂起状况。 当检测到总线挂起状态时，设备被关闭。 然后将设备重新打开以测试设备。 每个设备都通过写入和读取其配置空间进行测试。 存储与故障条件相关的总线上的信息。 所存储的信息在故障状态发生之后被检索，存储的信息包括地址，数据和总线控制信息。

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