公开(公告)号：EP0720094A2

公开(公告)日：1996-07-03

申请号：EP95309547.8

申请日：1995-12-29

申请人： Compaq Computer Corporation

发明人： Goodrum, Alan A. ,  Kotzur, Gary B. ,  Lantz, Kurt C. ,  Heinrich, David F. ,  Wilson, Jeffrey R.

IPC分类号： G06F11/00 ,  G06F15/16

CPC分类号： G06F15/177 ,  G06F1/26 ,  G06F11/1417

摘要： A hot spare boot circuit that automatically switches from a non-operational CPU to an operational CPU for powering up the computer system. In the multiprocessor computer system, a first CPU is designated to perform power on operations. If the first CPU fails, which is determined when a dead man counter in the hot spare boot circuit times out, the hot spare circuit ensures that the first CPU is in a disabled state. Next, the hot spare boot circuit identifies an operational second CPU, reinitializing certain ID information as necessary such that the second CPU can properly perform power on operations. The hot spare boot then awakens the second CPU, using a startup interprocessor interrupt in one embodiment, or simply negating the hard reset of the second CPU in a second embodiment. The second CPU then proceeds to perform the power on functions.

摘要翻译： 一个热备用引导电路，可自动从非操作CPU切换到运行CPU，以便为计算机系统供电。 在多处理器计算机系统中，指定第一CPU执行上电操作。 如果第一个CPU出现故障，当热备用引导电路中的死亡计数器超时时，该热备用电路确保第一个CPU处于禁用状态。 接下来，热备用引导电路识别操作的第二CPU，根据需要重新初始化某些ID信息，使得第二CPU可以正常地执行上电操作。 在第二实施例中，热备用引导然后唤醒第二CPU，在一个实施例中使用启动处理器中断，或简单地否定第二CPU的硬复位。 然后第二个CPU继续执行上电功能。

公开(公告)号：EP0720094B1

公开(公告)日：2002-07-24

申请号：EP95309547.8

申请日：1995-12-29

申请人： Compaq Computer Corporation

发明人： Goodrum, Alan A. ,  Kotzur, Gary B. ,  Lantz, Kurt C. ,  Heinrich, David F. ,  Wilson, Jeffrey R.

IPC分类号： G06F11/00 ,  G06F15/16

CPC分类号： G06F15/177 ,  G06F1/26 ,  G06F11/1417

公开(公告)号：EP0720094A3

公开(公告)日：1997-04-23

申请号：EP95309547.8

申请日：1995-12-29

申请人： Compaq Computer Corporation

发明人： Goodrum, Alan A. ,  Kotzur, Gary B. ,  Lantz, Kurt C. ,  Heinrich, David F. ,  Wilson, Jeffrey R.

IPC分类号： G06F11/00 ,  G06F15/16

CPC分类号： G06F15/177 ,  G06F1/26 ,  G06F11/1417

摘要： A hot spare boot circuit that automatically switches from a non-operational CPU to an operational CPU for powering up the computer system. In the multiprocessor computer system, a first CPU is designated to perform power on operations. If the first CPU fails, which is determined when a dead man counter in the hot spare boot circuit times out, the hot spare circuit ensures that the first CPU is in a disabled state. Next, the hot spare boot circuit identifies an operational second CPU, reinitializing certain ID information as necessary such that the second CPU can properly perform power on operations. The hot spare boot then awakens the second CPU, using a startup interprocessor interrupt in one embodiment, or simply negating the hard reset of the second CPU in a second embodiment. The second CPU then proceeds to perform the power on functions.

公开(公告)号：EP0520705B1

公开(公告)日：1996-01-31

申请号：EP92305657.6

申请日：1992-06-19

申请人： Compaq Computer Corporation

发明人： Lantz, Kurt C. ,  Hess, Randall L.

IPC分类号： G06F1/00

CPC分类号： G06F1/3218 ,  G06F21/31 ,  G06F21/84 ,  G09G2330/021

公开(公告)号：EP0520705A1

公开(公告)日：1992-12-30

申请号：EP92305657.6

申请日：1992-06-19

申请人： Compaq Computer Corporation

发明人： Lantz, Kurt C. ,  Hess, Randall L.

IPC分类号： G06F1/00

CPC分类号： G06F1/3218 ,  G06F21/31 ,  G06F21/84 ,  G09G2330/021

摘要： A keyboard controller which scans entered input sequences for an input sequence to activate a display blanking feature. A password and particular hot key are loaded by the system microprocessor. The keyboard controller then scans until the designated sequence is activated. The display on the monitor is blanked until a password sequence is entered. The password mode may be directly activated on command from the system microprocessor. The display blanking feature is especially useful in conjunction with a keyboard password lock.

摘要翻译： 键盘控制器，用于扫描输入序列的输入序列以激活显示消隐功能。 密码和特定热键由系统微处理器加载。 键盘控制器然后扫描直到指定的序列被激活。 监视器上的显示屏将被消隐，直到输入密码序列。 可以从系统微处理器的命令直接激活密码模式。 显示屏消隐功能与键盘密码锁一起特别有用。