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    • 5. 发明授权
    • In-circuit-emulation event management system
    • 在线仿真事件管理系统
    • US5630102A
    • 1997-05-13
    • US359057
    • 1994-12-19
    • Thomas M. JohnsonAravindh BakthavathsaluRichard BrunnerEliot GarbusByron GillespieStephen J. Strazdus
    • Thomas M. JohnsonAravindh BakthavathsaluRichard BrunnerEliot GarbusByron GillespieStephen J. Strazdus
    • G06F11/36G06F9/455
    • G06F11/3656
    • A microprocessor system utilizing an in-circuit emulator (ICE) to aid in testing and debugging by an external emulator. The microprocessor operates in two modes. One mode is emulation mode in which the microprocessor outputs trace information for allowing the emulator to reconstruct microprocessor execution, and the other mode is interrogation mode where the microprocessor ceases emulation mode, and allows the emulator to modify the state of the microprocessor or interrogate it. An ICEBRK signal is provided on the microprocessor to better handle transition from emulation to interrogation mode. An address mark counter and generator is provided to force the microprocessor to automatically issue an address mark message which includes the location of the microprocessor's instruction pointer. An AMCTRL bit may be further provided to allow a human user to selectively inhibit the issuance of an address mark. An ICELOCK signal is provided on the microprocessor to control the writing of control registers during hardware and software initialization that the microprocessor performs. A MSGFRM signal is provided to aid the emulator in capturing trace information generated at high frequencies (in excess of 40 MHz).
    • 利用在线仿真器(ICE)的微处理器系统可以帮助外部仿真器进行测试和调试。 微处理器工作在两种模式。 一种模式是仿真模式,其中微处理器输出用于允许仿真器重构微处理器执行的跟踪信息,另一种模式是询问模式,其中微处理器停止仿真模式,并允许仿真器修改微处理器的状态或询问它。 在微处理器上提供了一个+ E,ovs ICEBRK + EE信号,以更好地处理从仿真到询问模式的转换。 提供地址标记计数器和发生器以迫使微处理器自动发出包括微处理器指令指针位置的地址标记消息。 可以进一步提供AMCTRL位以允许人类用户选择性地禁止发出地址标记。 在微处理器上提供了一个+ E,ovs ICELOCK + EE信号,以控制微处理器执行的硬件和软件初始化期间控制寄存器的写入。 提供A + E,ovs MSGFRM + EE信号以帮助仿真器捕获在高频(超过40 MHz)下生成的跟踪信息。
    • 6. 发明授权
    • Serially indexing a cache memory
    • 连续索引缓存内存
    • US08171200B1
    • 2012-05-01
    • US12942212
    • 2010-11-09
    • Dennis O'ConnorStephen J. Strazdus
    • Dennis O'ConnorStephen J. Strazdus
    • G06F12/08
    • G06F12/1027G06F12/0864G06F2212/652Y02D10/13
    • A method includes indexing a translation table stored in memory with a first index of a virtual address corresponding to a first memory region size by querying the translation table at first locations associated with the first index. Indexing the translation table with a second index of the virtual address corresponding to a second memory region size by querying the translation table at second locations associated with the second index. The translation table includes translations for mapping address tags of the virtual address to physical addresses. The first index is different than the second index, and the first memory region size is different than the second memory region size.
    • 一种方法包括通过在与第一索引相关联的第一位置处查询翻译表来索引存储在存储器中的具有与第一存储器区域大小相对应的虚拟地址的第一索引的翻译表。 通过在与第二索引相关联的第二位置处查询翻译表来索引具有与第二存储器区域大小对应的虚拟地址的第二索引的翻译表。 翻译表包括将虚拟地址的地址标签映射到物理地址的转换。 第一索引与第二索引不同,第一存储区大小不同于第二存储区大小。
    • 7. 发明授权
    • Serially indexing a cache memory
    • 连续索引缓存内存
    • US07831760B1
    • 2010-11-09
    • US12342221
    • 2008-12-23
    • Dennis M. O'ConnorStephen J. Strazdus
    • Dennis M. O'ConnorStephen J. Strazdus
    • G06F12/08
    • G06F12/1027G06F12/0864G06F2212/652Y02D10/13
    • A method includes indexing a translation table stored in memory with a first index of a virtual address corresponding to a first memory region size by querying the translation table at first locations associated with the first index. Indexing the translation table with a second index of the virtual address corresponding to a second memory region size by querying the translation table at second locations associated with the second index. The translation table includes translations for mapping address tags of the virtual address to physical addresses. The first index is different than the second index, and the first memory region size is different than the second memory region size.
    • 一种方法包括通过在与第一索引相关联的第一位置处查询翻译表来索引存储在存储器中的具有与第一存储器区域大小相对应的虚拟地址的第一索引的翻译表。 通过在与第二索引相关联的第二位置处查询翻译表来索引具有与第二存储器区域大小对应的虚拟地址的第二索引的翻译表。 翻译表包括将虚拟地址的地址标签映射到物理地址的转换。 第一索引与第二索引不同,第一存储区大小不同于第二存储区大小。