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公开(公告)号:US5761452A
公开(公告)日:1998-06-02
申请号:US617413
申请日:1996-03-18
申请人: Douglas A. Hooks , Drew J. Dutton
发明人: Douglas A. Hooks , Drew J. Dutton
IPC分类号: G06F13/364 , G06F13/00
CPC分类号: G06F13/364
摘要: An improved bus arbitration system comprising an information bus, first and second bus masters connected to the bus and a bus arbiter for controlling ownership of the bus. The first bus master is adapted to perform speculative pre-fetching and has a first REQ signal for requesting ownership of the bus and an SP signal for indicating when a bus ownership request is for a speculative pre-fetch. The second bus master has a second REQ signal for requesting ownership of the bus. The bus arbiter is configured such that when the first bus master asserts its REQ signal and its SP signal and the second bus master asserts its REQ signal, the bus arbiter assigns higher priority to the second bus master in response to the SP signal.
摘要翻译: 一种改进的总线仲裁系统,包括信息总线,连接到总线的第一和第二总线主机以及用于控制总线所有权的总线仲裁器。 第一总线主机适于执行推测性预取,并且具有用于请求总线所有权的第一REQ信号和用于指示总线所有权请求何时用于推测性预取的SP信号。 第二总线主机具有用于请求所有者总线的第二REQ信号。 总线仲裁器被配置为使得当第一总线主机断言其REQ信号及其SP信号,并且第二总线主机断言其REQ信号时,总线仲裁器响应于SP信号为第二总线主机分配更高的优先级。
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公开(公告)号:US5560024A
公开(公告)日:1996-09-24
申请号:US384284
申请日:1995-02-01
申请人: Leroy D. Harper , Grayson C. Schlichting , Douglas A. Hooks , Ian H. S. Cullimore , Gavin A. Bradshaw , Biswa R. Banerjee , John P. Fairbanks , Roderick W. Stone
发明人: Leroy D. Harper , Grayson C. Schlichting , Douglas A. Hooks , Ian H. S. Cullimore , Gavin A. Bradshaw , Biswa R. Banerjee , John P. Fairbanks , Roderick W. Stone
CPC分类号: G06F1/324 , G06F1/08 , G06F1/3203 , G06F1/3265 , G06F1/3287 , Y02B60/1217 , Y02B60/1242 , Y02B60/1282 , Y02B60/32
摘要: A low power management system including both hardware and software is provided for a battery powered portable computer. The low power management system powers down various sections of the computer when they are not used. The low power management system is controlled by a control program in the microprocessor of the computer. The low power management system includes the capability to turn off clock signals to various sections of the computer based upon demand. Also included is the capability to turn on clock signals based upon demand. The low power management system also includes the capability to turn on the computer upon a press of a key on the computer keyboard. The low power management system monitors software application programs for keyboard activity so as to turn off the microprocessor in the computer in response to a loop looking for a keypress and certain other loops which can be monitored without use of the microprocessor.
摘要翻译: 为电池供电的便携式计算机提供包括硬件和软件的低功耗管理系统。 低功耗管理系统在不使用计算机的各个部分时关闭电源。 低功率管理系统由计算机微处理器中的控制程序控制。 低功率管理系统包括根据需要关闭计算机各个部分的时钟信号的能力。 还包括根据需求打开时钟信号的功能。 低功率管理系统还包括在按下计算机键盘上的键时打开计算机的功能。 低功率管理系统监视用于键盘活动的软件应用程序,以便响应于寻找按键的循环以及可以在不使用微处理器的情况下监视某些其它循环来关闭计算机中的微处理器。
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公开(公告)号:US5428790A
公开(公告)日:1995-06-27
申请号:US134341
申请日:1993-10-08
申请人: Leroy D. Harper , Grayson C. Schlichting , Douglas A. Hooks , Ian H. S. Culimore , Gavin A. Bradshaw , Biswa R. Banerjee , John P. Fairbanks , Roderick W. Stone
发明人: Leroy D. Harper , Grayson C. Schlichting , Douglas A. Hooks , Ian H. S. Culimore , Gavin A. Bradshaw , Biswa R. Banerjee , John P. Fairbanks , Roderick W. Stone
CPC分类号: G06F1/324 , G06F1/08 , G06F1/3203 , G06F1/3265 , G06F1/3287 , Y02B60/1217 , Y02B60/1242 , Y02B60/1282 , Y02B60/32
摘要: A low power management system including both hardware and software for a battery powered portable computer. The low power management system powers down various sections of the computer when they are not used. The low power management system is controlled by a control program in the microprocessor of the computer. The low power management system includes the capability to turn off clock signals to various sections of the computer based upon demand. Also included is the capability to turn on clock signals based upon demand. The low power management system also includes the capability to turn on the computer upon a press of a key on the computer keyboard. The low power management system monitors software application programs for keyboard activity so as to turn off the microprocessor in the computer in response to a loop looking for a keypress and certain other loops which can be monitored without use of the microprocessor.
摘要翻译: 低功耗管理系统,包括电池供电便携式计算机的硬件和软件。 低功耗管理系统在不使用计算机的各个部分时关闭电源。 低功率管理系统由计算机微处理器中的控制程序控制。 低功率管理系统包括根据需要关闭计算机各个部分的时钟信号的能力。 还包括根据需求打开时钟信号的功能。 低功率管理系统还包括在按下计算机键盘上的键时打开计算机的功能。 低功率管理系统监视用于键盘活动的软件应用程序,以便响应于寻找按键的循环以及可以在不使用微处理器的情况下监视某些其它循环来关闭计算机中的微处理器。
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