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EE World Article: CPU Cores With RISC-V Technology Now Support The Custom Extension

By December 6, 2018May 12th, 2021No Comments

Andes Technology announced its newly-released AndeStar V5 CPU cores – N25/N25F, NX25/NX25F, A25 and AX25 – support the Andes Custom Extension (ACE) feature. The AndeStar V5 architecture is the result of RISC-V technology incorporated with Andes innovations based on rich experience in serving embedded processor IPs for over 10 years. The ACE feature enables embedded designers to add customized instructions on their Andes V5 CPU cores with ease.
RISC-V is an open processor instruction set architecture (ISA) standardized by the non-profit RISC-V Foundation. It is rapidly gaining popularity in many markets because of its compactness, modularity and extensibility. In addition to general-purpose usages, RISC-V specification encourages customized instruction extensions to facilitate the design of Domain-Specific Architecture/Acceleration (DSA) for applications such as Artificial Intelligence/Machine Learning, AR/VR, ADAS, and next-generation storage and networking. Acceleration through customized instructions can boost application performance significantly while maintaining the programmability. Despite the huge benefits that may bring, however, most SoC teams find it difficult to add customized instructions. This is because designing new instructions requires major efforts and CPU talents to modify the existing processor hardware and associated software tools and make sure they work together.
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