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    • 3. 发明授权
    • Reducing instruction transactions in a microprocessor
    • 减少微处理器中的指令事务
    • US06393551B1
    • 2002-05-21
    • US09320827
    • 1999-05-26
    • Balraj SinghEric ChestersVenkat MattelaRod G. Fleck
    • Balraj SinghEric ChestersVenkat MattelaRod G. Fleck
    • G06F1516
    • G06F9/381
    • A method and an apparatus for reducing the number of instruction transactions in a microprocessor are disclosed. As a method, the number of issued instructions carried by an issued instruction bus in a computer system are reduced by determining if an instruction fetched by a fetch unit matches a cached instruction tag. When the fetched instruction matches the cached instruction tag, an opcode and an associated instruction corresponding to the cached instruction tag are directly injected to an appropriate function unit. The apparatus includes a plurality of tag PC cache memory devices used to store tag PC entries associated with target instructions injected directly to corresponding function units included microprocessors and the like. The injection reduces the number of instructions fetched from the program memory as well as the number of issued instructions carried by an issued instruction bus.
    • 公开了一种用于减少微处理器中的指令交易数量的方法和装置。 作为一种方法,通过确定由获取单元获取的指令是否与缓存的指令标签相匹配,来减少由计算机系统中发出的指令总线承载的发出指令的数量。 当获取的指令与缓存的指令标签匹配时,与缓存的指令标签相对应的操作码和相关联的指令被直接注入到适当的功能单元中。 该装置包括用于存储与直接注入到包括微处理器等的相应功能单元的目标指令相关联的标签PC条目的多个标签PC缓存存储器设备。 注入减少了从程序存储器中取出的指令数量以及发出的指令总线所携带的指令数量。