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    Computer system housing
    2.
    发明公开
    Computer system housing 失效
    Rechnersystemgehäuse

    公开(公告)号：EP0836134A2

    公开(公告)日：1998-04-15

    申请号：EP97308028.6

    申请日：1997-10-10

    Applicant: Compaq Computer Corporation

    Inventor： Sauer, James P. ,  Scholhamer, George J. ,  Galloway, William C.

    IPC: G06F1/18

    CPC classification number: G06F1/184 ,  G06F1/187 ,  G06F1/188

    Abstract: A modular computer chassis constructed with a centre pluggable interface adapted for the modular mounting of components on opposite sides thereof. The chassis includes frontal and rear regions which are open and adapted for receipt of modular computer components therein for direct coupling to the centre pluggable interface. An isolation frame is also provided within the chassis for physically and electrically isolating select components therein one from the other. A slidable mounting array is also provided for facilitating flexibility in the mounting of half height and one-third height disk drives adjacent to the centre pluggable interface for flexibility in the design and utilization of the chassis of the present invention.

    Abstract translation: 一个模块化的计算机机箱，采用中心可插拔接口构成，适用于组件在其相对侧的模块化安装。 底盘包括前部区域和后部区域，该区域是开放的并适于在其中接收模块化计算机组件，用于直接联接到中心可插接口。 隔离框架还设置在底盘内，用于物理和电气隔离其中的选择部件。 还提供了一种可滑动的安装阵列，以便于在靠近中心可插拔接口的情况下安装半高度和三分之一高度磁盘驱动器的灵活性，以便灵活地设计和利用本发明的机架。

    Locked exchange Fifo
    3.
    发明公开
    Locked exchange Fifo 失效
    Fifo-Puffer mit gesperrtem Austausch

    公开(公告)号：EP0768600A1

    公开(公告)日：1997-04-16

    申请号：EP96307281.4

    申请日：1996-10-04

    Applicant: Compaq Computer Corporation

    Inventor： Grieff, Thomas W. ,  Galloway, William C. ,  Carlson, Jeff M.

    IPC: G06F5/06

    CPC classification number: G06F5/14 ,  G06F5/06 ,  G06F5/12 ,  G06F2205/123

    Abstract: A FIFO with locked exchange capability is disclosed. The FIFO has a memory for storing and retrieving data submissions, a write address generator and a read address generator for sequentially addressing the memory. A difference counter maintains the difference between the number of writes to the queue and reads from the queue. The net difference, as tracked by the counter is a measure of the FIFO utilization. To detect the queue full condition, a comparator compares the maximum FIFO stack depth against the counter output. The result of this comparison is latched and provided to a write strobe generator so that, in a subsequent write operation, if the FIFO is full, the write strobe from the producer is blocked and the data will not be written to the FIFO. Otherwise, the write strobe from the producer is passed to the memory. Additionally, a remaining space count is maintained in a status register. During operation, a bus master performing the read-modify-write cycle to the FIFO reads the status register to find the available space in the FIFO and immediately writes the data to the FIFO. If the read returns a zero, indicating that the FIFO is full, the bus master requeues the data for another read-modify-write cycle as it knows that the data has not been stored in the FIFO.

    Abstract translation: 公开了具有锁定交换能力的FIFO。 FIFO具有用于存储和检索数据提交的存储器，用于顺序寻址存储器的写入地址发生器和读取地址发生器。 差异计数器维护对队列的写入次数和从队列读取的差异。 由计数器跟踪的净差是FIFO利用率的量度。 为了检测队列满状态，比较器比较最大FIFO堆栈深度与计数器输出。 该比较的结果被锁存并提供给写选通发生器，使得在随后的写操作中，如果FIFO满，则来自制造者的写选通信号被阻塞，并且数据将不被写入到FIFO。 否则，来自制造商的写选通传递到存储器。 此外，在状态寄存器中保持剩余空间计数。 在操作期间，执行FIFO读读修改周期的总线主机读取状态寄存器以找到FIFO中的可用空间，并立即将数据写入FIFO。 如果读取返回零，表明FIFO已满，则总线主机将数据重新取出用于另一个读 - 修改 - 写入周期，因为它知道数据尚未存储在FIFO中。

    Computer system housing
    6.
    发明公开
    Computer system housing 失效
    计算机系统外壳

    公开(公告)号：EP0836134A3

    公开(公告)日：1999-02-17

    申请号：EP97308028.6

    申请日：1997-10-10

    Applicant: Compaq Computer Corporation

    Inventor： Sauer, James P. ,  Scholhamer, George J. ,  Galloway, William C.

    IPC: G06F1/18

    CPC classification number: G06F1/184 ,  G06F1/187 ,  G06F1/188

    Abstract: A modular computer chassis constructed with a centre pluggable interface adapted for the modular mounting of components on opposite sides thereof. The chassis includes frontal and rear regions which are open and adapted for receipt of modular computer components therein for direct coupling to the centre pluggable interface. An isolation frame is also provided within the chassis for physically and electrically isolating select components therein one from the other. A slidable mounting array is also provided for facilitating flexibility in the mounting of half height and one-third height disk drives adjacent to the centre pluggable interface for flexibility in the design and utilization of the chassis of the present invention.

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