公开(公告)号：EP0930573A3

公开(公告)日：2000-07-19

申请号：EP99300270.8

申请日：1999-01-15

Applicant: Compaq Computer Corporation

Inventor： Pascarella, Randall J. ,  Nguyen, Vincent

IPC: G06F13/40

CPC classification number: G06F13/409

Abstract: A computer system with a SCSI backplane board has duplex-ready logic for switching the computer system between a SCSI simplex mode and a SCSI duplex mode. The duplex-ready logic includes a set of bus quick switches, a duplex-ready logic controller, and a set or sets of active terminators. The SCSI simplex mode and SCSI duplex mode are configured by the duplex-ready logic controller based on the number of SCSI cables present. If only a primary SCSI cable is present, the duplex-ready logic controller enables a SCSI simplex mode. To enable a SCSI simplex mode, the bus switches are enabled and the terminators are selectively enabled and/or disabled. If a primary SCSI cable and a secondary SCSI cable are present, the duplex-ready logic controller enables a SCSI duplex mode. To enable a SCSI duplex mode, the bus switches are disabled and the terminators are selectively disabled and/or enabled. The duplex-ready logic controller optionally may change to SCSI identification values for a set of SCSI devices for a SCSI duplex mode and restore the SCSI identification values for a SCSI simplex mode. In manually configuring the state of the SCSI backplane for the secondary SCSI duplex mode, the chassis is minimally disassembled to allow for installation of a SCSI cable from a secondary SCSI controller to the SCSI duplex-ready backplane board. The SCSI duplex-ready backplane board both eliminates the need for a board changeout and a duplex-option kit and reduces the disassembly and reassembly required to configure the state of the SCSI backplane of a computer system for a SCSI simplex mode or a SCSI duplex mode.

公开(公告)号：EP0930573B1

公开(公告)日：2007-03-28

申请号：EP99300270.8

申请日：1999-01-15

Applicant: Compaq Computer Corporation

Inventor： Pascarella, Randall J. ,  Nguyen, Vincent

IPC: G06F13/40

CPC classification number: G06F13/409

公开(公告)号：EP0930573A2

公开(公告)日：1999-07-21

申请号：EP99300270.8

申请日：1999-01-15

Applicant: Compaq Computer Corporation

Inventor： Pascarella, Randall J. ,  Nguyen, Vincent

IPC: G06F13/40

CPC classification number: G06F13/409

Abstract: A computer system with a SCSI backplane board has duplex-ready logic for switching the computer system between a SCSI simplex mode and a SCSI duplex mode. The duplex-ready logic includes a set of bus quick switches, a duplex-ready logic controller, and a set or sets of active terminators. The SCSI simplex mode and SCSI duplex mode are configured by the duplex-ready logic controller based on the number of SCSI cables present. If only a primary SCSI cable is present, the duplex-ready logic controller enables a SCSI simplex mode. To enable a SCSI simplex mode, the bus switches are enabled and the terminators are selectively enabled and/or disabled. If a primary SCSI cable and a secondary SCSI cable are present, the duplex-ready logic controller enables a SCSI duplex mode. To enable a SCSI duplex mode, the bus switches are disabled and the terminators are selectively disabled and/or enabled. The duplex-ready logic controller optionally may change to SCSI identification values for a set of SCSI devices for a SCSI duplex mode and restore the SCSI identification values for a SCSI simplex mode. In manually configuring the state of the SCSI backplane for the secondary SCSI duplex mode, the chassis is minimally disassembled to allow for installation of a SCSI cable from a secondary SCSI controller to the SCSI duplex-ready backplane board. The SCSI duplex-ready backplane board both eliminates the need for a board changeout and a duplex-option kit and reduces the disassembly and reassembly required to configure the state of the SCSI backplane of a computer system for a SCSI simplex mode or a SCSI duplex mode.

Abstract translation: 具有SCSI底板的计算机系统具有用于在SCSI单工模式和SCSI双工模式之间切换计算机系统的双工准备逻辑。 双工准备逻辑包括一组总线快速开关，双工就绪逻辑控制器以及一组或多组有源终端器。 SCSI单工模式和SCSI双工模式由双工就绪逻辑控制器根据存在的SCSI电缆数量配置。 如果仅存在主SCSI电缆，则双工就绪逻辑控制器启用SCSI单工模式。 要启用SCSI单工模式，总线开关被使能，并且终端器被有选择地启用和/或禁用。 如果存在主SCSI电缆和辅助SCSI电缆，则双工就绪逻辑控制器启用SCSI双工模式。 要启用SCSI双工模式，总线开关被禁用，并且选择性地禁用和/或启用终端器。 双工就绪逻辑控制器可选地可以改变为用于SCSI双工模式的一组SCSI设备的SCSI标识值，并恢复SCSI单工模式的SCSI标识值。 在手动配置辅助SCSI双面模式的SCSI背板的状态下，机箱最低限度地拆卸，以允许将SCSI电缆从辅助SCSI控制器安装到SCSI双面板底板。 SCSI双工准备底板不需要更换电路板和双工选件套件，并可减少配置SCSI单工模式或SCSI双工模式的计算机系统SCSI背板状态所需的拆卸和重组 。

公开(公告)号：EP0825518A1

公开(公告)日：1998-02-25

申请号：EP97306155.9

申请日：1997-08-13

Applicant: Compaq Computer Corporation

Inventor： Nguyen, Vincent ,  Brownell, Paul V.

IPC: G06F1/24 ,  G06F13/40

CPC classification number: G06F13/4027 ,  G06F1/24

Abstract: A reset circuit for a computer system having PCI chip set, the reset circuit including a logical AND gate with a first input connected to a cold boot reset pin of the PMC, and an output connected to a PCI data bus; a logical OR gate with a first input connected to the flush pin of the PMC and an output connected to a second input of the logical AND gate; an inverter with an input connected to the flush pin of the PMC; and a delay device connected between an output of the inverter and a second input of the logical OR gate.

Abstract translation: 一种用于具有PCI芯片组的计算机系统的复位电路，所述复位电路包括逻辑AND门，所述AND门具有连接到所述PMC的冷启动复位引脚的第一输入和连接到PCI数据总线的输出; 逻辑“或”门，具有连接到PMC的齐平引脚的第一输入和连接到逻辑“与”门的第二输入的输出; 一个输入连接到PMC的齐平引脚的逆变器; 以及连接在反相器的输出端和逻辑或门的第二输入端之间的延迟器件。