Microcontroller with configurable instruction set
    2.
    发明授权
    Microcontroller with configurable instruction set 有权
    具有可配置指令集的微控制器

    公开(公告)号:US06427202B1

    公开(公告)日:2002-07-30

    申请号:US09304745

    申请日:1999-05-04

    IPC分类号: G06F930

    CPC分类号: G06F9/30145 G06F9/30181

    摘要: An embeddable microcontroller is provided. The microcontroller has program memory for storing instructions. An instruction decoder feteches instructions, decodes them, and forwards them to an enabler. The enabler checks a status bit or consults a pre-defined lookup table to determine whether the instruction at hand should be executed. If the status bit is set to ENABLE, or the instruction appears on a list of enabled instructions, the decoded instruction is forwarded to the central processing unit for execution. Otherwise, if the status bit is set to DISABLE, or the decoded instruction does not appear on the pre-defined list of enabled instructions, then the instruction is not forwarded to the central processing unit, effectively disabling the instruction.

    摘要翻译: 提供了可嵌入式微控制器。 微控制器具有用于存储指令的程序存储器。 指令解码器对指令进行解码,对其进行解码,并将其转发到启动器。 启用程序检查状态位或查阅预定义的查找表,以确定是否应执行指令。 如果状态位设置为ENABLE,或指令出现在使能指令列表上,则将解码的指令转发到中央处理单元执行。 否则,如果状态位设置为DISABLE,或者解码的指令未出现在使能指令的预定义列表上,则指令不会转发到中央处理单元,有效地禁用指令。