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CISC与RISC是微处理器设计中的2种主要指令体系,他们各具优势,共存共融是其发展方向之一。首先介绍了硬件上基于CISC/RISC的混合架构设计,然后重点具体介绍CISC/RISC混合指令集的构建方法,并以65C02S的指令集为例,通过仿真说明了按该方法构建的混合指令集在基于CISC/RISC混合架构的硬件上运行具有良好的优势。
CISC and RISC microprocessor design is the two main command system, they have their own advantages, coexistence and coexistence is one of its development. Firstly, the design of hybrid architecture based on CISC / RISC in hardware is introduced. Then the construction method of CISC / RISC mixed instruction set is introduced in detail. Taking the instruction set of 65C02S as an example, the mixed instruction set constructed by this method Hardware based on the CISC / RISC hybrid architecture runs with good advantages.