Microprocessor comprising an instruction for inverting bits in a binary word
    1.
    发明申请
    Microprocessor comprising an instruction for inverting bits in a binary word 审中-公开
    微处理器包括用于反转二进制字中的位的指令

    公开(公告)号:US20020156818A1

    公开(公告)日:2002-10-24

    申请号:US10068568

    申请日:2002-02-06

    Abstract: A microprocessor comprises a central processing unit having an arithmetic and logic unit with two inputs and one input fed-back to one of the inputs through a data path. The arithmetic and logic unit performs arithmetic and logic operations on binary words temporarily stored within registers in the central processing unit. The central processing unit further includes a shift unit in the data path of the arithmetic and logic unit for performing operations to shift bits in the binary words applied thereto. A selection circuit selects a shift operation to be performed. An inverting circuit inverts the ordering of the bits in the binary words applied thereto, which are in the data path of the arithmetic and logic unit, and a selection circuit selects the inversion operation when the latter is required.

    Abstract translation: 微处理器包括中央处理单元,其具有具有两个输入的算术和逻辑单元,以及通过数据路径反馈到其中一个输入的一个输入。 算术和逻辑单元对临时存储在中央处理单元中的寄存器内的二进制字执行算术和逻辑运算。 中央处理单元还包括在算术和逻辑单元的数据路径中的移位单元,用于执行将应用于其中的二进制字中的位移位的操作。 选择电路选择要执行的移位操作。 反相电路将应用于其中的二进制字中的位的顺序反转在算术和逻辑单元的数据路径中,并且当需要后者时,选择电路选择反转操作。

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