公开(公告)号：US20040243786A1

公开(公告)日：2004-12-02

申请号：US10814823

申请日：2004-03-31

Applicant: STMicroelectronics SA

Inventor： Franck Roche ,  Philippe Basset

IPC: G06F012/02

CPC classification number: G06F9/342

Abstract: A microprocessor includes a processing unit, an address bus connected to an addressable memory space, and executes instructions from an instruction set for accessing the addressable memory space. The addressable memory space is for a lower memory area and an extended memory area. The instruction set includes a first instruction group for accessing the lower memory area, and a second instruction group that is distinct from the first instruction group for accessing the extended memory area.

Abstract translation: 微处理器包括处理单元，连接到可寻址存储器空间的地址总线，并且执行来自用于访问可寻址存储器空间的指令集的指令。 可寻址存储器空间用于较低的存储区域和扩展存储区域。 指令集包括用于访问下部存储器区域的第一指令组和与用于访问扩展存储器区域的第一指令组不同的第二指令组。