高性能16位微处理器IP软核设计  

The Design of 16-bit High Performance Microprocessor IP Softcore

作　　者：李洋[1] 宋何娟[1] 张建生[1] 缪庭[1] 

机构地区：[1]合肥工业大学微电子设计研究所

出　　处：《中国集成电路》2007年第9期48-52,80,共6页China lntegrated Circuit

基　　金：国家自然科学基金资助项目(60576034)

摘　　要：在对标准Intel8086微处理器进行分析的基础上,本文介绍了一种与其指令集兼容、性能大幅提高的可重用16位微处理器IP软核的设计。从处理器体系结构的划分,到指令集的设计以及处理器内部各单元的设计,进行了比较详尽的阐述,并对该设计进行了软件仿真和硬件验证。该处理器采用缩短指令执行时钟周期、增加指令预取队列、改进总线接口时序和减少有效地址计算时间等系统架构的优化,使性能得到大幅度的提高;通过扩展指令集实现与标准8086、8088、80186和80188系列微处理器完全软件兼容。Based on the analysis of the standard Intel8086 microprocessor, this paper introduces the design of one kind of 16-bit MPU IP softcore, which is reusable, high performance and instruction set compatible with standard Intel 8086. From the partition of processor architecture to the design of instruction set and various interior units, the design is elaborated in detail and software simulation and hardware validation are fulfilled. The performance of this processor obtains remarkable enhancement through the optimization in system architecture, such as compressing Instruction Clock Cycles, increasing Instruction Pre-Fetch Queue, improving Bus Interface Timing and reducing Effective Address Calculation Times and so on; Through including additional 80186 instructions, this design implements fully software compatibility with standard 8086, 8088, 80186 and 80188 family of microprocessors.

关 键 词：微处理器 8086 IP 

分 类 号：TP332[自动化与计算机技术—计算机系统结构]