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    • 3. 发明申请
    • Boundary address registers for selection of ISA mode
    • 用于选择ISA模式的边界地址寄存器
    • US20070094482A1
    • 2007-04-26
    • US11636462
    • 2006-12-11
    • Michael JensenMorten Stribaek
    • Michael JensenMorten Stribaek
    • G06F9/40
    • G06F9/44547G06F9/30076G06F9/30189G06F9/30196G06F9/3802
    • An apparatus and method are provided that enable a multiple instruction set architecture (ISA) central processing unit (CPU) to distinguish between different program instructions corresponding to different ISAs during execution of a multiple-ISA application program. The apparatus allows the multiple-ISA CPU to select a particular ISA decoding mode corresponding to a program instruction. The program instruction is located at an address within an address space of the multiple-ISA CPU. The apparatus includes a plurality of boundary address registers and ISA mode selection logic. The plurality of boundary address registers can be dynamically loaded to partition the address space into a plurality of address ranges, where each of the plurality of address ranges corresponds to each of a plurality of ISA decoding modes. The ISA mode selection logic is coupled to the plurality of boundary address registers. The ISA mode selection logic receives the particular address, and compares it against the plurality of address ranges to determine the particular ISA decoding mode for the particular program instruction.
    • 提供了一种装置和方法,其使多个指令集体系结构(ISA)中央处理单元(CPU)在执行多个ISA应用程序期间区分与不同ISA相对应的不同程序指令。 该装置允许多ISA CPU选择与程序指令相对应的特定ISA解码模式。 程序指令位于多ISA CPU的地址空间内的地址。 该装置包括多个边界地址寄存器和ISA模式选择逻辑。 可以动态地加载多个边界地址寄存器以将地址空间分割成多个地址范围,其中多个地址范围中的每一个对应于多个ISA解码模式中的每一个。 ISA模式选择逻辑耦合到多个边界地址寄存器。 ISA模式选择逻辑接收特定地址,并将其与多个地址范围进行比较,以确定特定程序指令的特定ISA解码模式。
    • 5. 发明授权
    • Selection of ISA decoding mode for plural instruction sets based upon instruction address
    • 基于指令地址选择多个指令集的ISA解码模式
    • US07509480B2
    • 2009-03-24
    • US11636462
    • 2006-12-11
    • Michael Gottlieb JensenMorten Stribaek
    • Michael Gottlieb JensenMorten Stribaek
    • G06F9/30
    • G06F9/44547G06F9/30076G06F9/30189G06F9/30196G06F9/3802
    • An apparatus and method are provided that enable a multiple instruction set architecture (ISA) central processing unit (CPU) to distinguish between different program instructions corresponding to different ISAs during execution of a multiple-ISA application program. The apparatus allows the multiple-ISA CPU to select a particular ISA decoding mode corresponding to a program instruction. The program instruction is located at an address within an address space of the multiple-ISA CPU. The apparatus includes a plurality of boundary address registers and ISA mode selection logic. The plurality of boundary address registers can be dynamically loaded to partition the address space into a plurality of address ranges, where each of the plurality of address ranges corresponds to each of a plurality of ISA decoding modes. The ISA mode selection logic is coupled to the plurality of boundary address registers. The ISA mode selection logic receives the particular address, and compares it against the plurality of address ranges to determine the particular ISA decoding mode for the particular program instruction.
    • 提供了一种装置和方法,其使多个指令集体系结构(ISA)中央处理单元(CPU)在执行多个ISA应用程序期间区分与不同ISA相对应的不同程序指令。 该装置允许多ISA CPU选择与程序指令相对应的特定ISA解码模式。 程序指令位于多ISA CPU的地址空间内的地址。 该装置包括多个边界地址寄存器和ISA模式选择逻辑。 可以动态地加载多个边界地址寄存器以将地址空间分割成多个地址范围,其中多个地址范围中的每一个对应于多个ISA解码模式中的每一个。 ISA模式选择逻辑耦合到多个边界地址寄存器。 ISA模式选择逻辑接收特定地址,并将其与多个地址范围进行比较,以确定特定程序指令的特定ISA解码模式。
    • 7. 发明授权
    • Changing instruction set architecture mode by comparison of current instruction execution address with boundary address register values
    • 通过将当前指令执行地址与边界地址寄存器值进行比较来改变指令集架构模式
    • US07149878B1
    • 2006-12-12
    • US09702112
    • 2000-10-30
    • Michael Gottlieb JensenMorten Stribaek
    • Michael Gottlieb JensenMorten Stribaek
    • G06F9/40
    • G06F9/44547G06F9/30076G06F9/30189G06F9/30196G06F9/3802
    • An apparatus and method are provided that enable a multiple instruction set architecture (ISA) central processing unit (CPU) to distinguish between different program instructions corresponding to different ISAs during execution of a multiple-ISA application program. The apparatus allows the multiple-ISA CPU to select a particular ISA decoding mode corresponding to a program instruction. The program instruction is located at an address within an address space of the multiple-ISA CPU. The apparatus includes a plurality of boundary address registers and ISA mode selection logic. The plurality of boundary address registers can be dynamically loaded to partition the address space into a plurality of address ranges, where each of the plurality of address ranges corresponds to each of a plurality of ISA decoding modes. The ISA mode selection logic is coupled to the plurality of boundary address registers. The ISA mode selection logic receives the particular address, and compares it against the plurality of address ranges to determine the particular ISA decoding mode for the particular program instruction.
    • 提供了一种装置和方法,其使多个指令集体系结构(ISA)中央处理单元(CPU)在执行多个ISA应用程序期间区分与不同ISA相对应的不同程序指令。 该装置允许多ISA CPU选择与程序指令相对应的特定ISA解码模式。 程序指令位于多ISA CPU的地址空间内的地址。 该装置包括多个边界地址寄存器和ISA模式选择逻辑。 可以动态地加载多个边界地址寄存器以将地址空间分割成多个地址范围,其中多个地址范围中的每一个对应于多个ISA解码模式中的每一个。 ISA模式选择逻辑耦合到多个边界地址寄存器。 ISA模式选择逻辑接收特定地址,并将其与多个地址范围进行比较,以确定特定程序指令的特定ISA解码模式。