电子科技2025，Vol.38Issue(6)：45-51,7.DOI:10.16180/j.cnki.issn1007-7820.2025.06.007
基于RISC-Ⅴ的高效访存指令扩展与硬件实现
Efficient Memory Access Instruction Extension and Hardware Implementation Based on RISC-Ⅴ
摘要
Abstract
MCU(Micro Control Unit)is a data flow control method often used in the deployment inference of neural network model hardware,and memory access operation is the main execution content of MCU data flow con-trol.In view of the problems such as low efficiency and poor flexibility of memory access instruction supported by MCU with traditional instruction set architecture,this study investigates SIMD(Single Instruction Multiple Data)ex-tension based on RISC-Ⅴ(Reduced Instruction Set Computer Ⅴ)instruction set.The efficient memory access instruc-tion is designed according to the instruction expansion coding space reserved by RISC-Ⅴ.To support the correct exe-cution of the new extension instructions,the related hardware circuit is extended based on the open source Humming-bird E203 kernel of core technology.The performance of the extended kernel is evaluated by comparing the perform-ance of the base kernel and the extended kernel against the same functional software load.The results show that when the extended E203 kernel continuously accesses memory in the 16 Byte address space,the number of instructions is reduced by 65.23％,the execution cycle is reduced by 66.12％,and the energy efficiency of the extended kernel is higher with the increase of the number of accesses.关键词
指令集扩展/RISC-Ⅴ指令集架构/SIMD/蜂鸟E203/高效访存/硬件部署/数据流/指令缩减Key words
instruction extension/RISC-Ⅴ/SIMD/Hummingbird E203/efficient storage access/hardware deployment/data stream/instruction reduction分类
电子信息工程引用本文复制引用
徐俊杰,张加宏,魏敬和,刘国柱,何健,尤兴宇..基于RISC-Ⅴ的高效访存指令扩展与硬件实现[J].电子科技,2025,38(6):45-51,7.基金项目
国家自然科学基金(62204233) （62204233）
江苏省自然科学基金(BK20211041) （BK20211041）
江苏省产业前瞻与关键核心技术重点项目(BE2021003-1) （BE2021003-1）
江苏省重点研发计划产业前瞻与关键核心技术项目(BE2023005-1)National Natural Science Foundation of China(62204233) （BE2023005-1）
Natural Science Foundation of Jangsu(BK20211041) （BK20211041）
Industry Outlook and Key Core Technology Key Projects in Jiangsu(BE2021003-1) （BE2021003-1）
Key R&D Plan Industry Outlook and Key Core Technology Projects in Jiangsu(BE2023005-1) （BE2023005-1）
