Introduction to the RISC‑V Open Instruction Set Architecture
This article provides a comprehensive overview of RISC‑V, covering its open‑source ISA philosophy, historical development, RISC versus CISC design trade‑offs, modular extensions, basic integer instruction set, register file, common extensions such as M, F, D, C, and examples of commercial implementations, illustrating why RISC‑V has become a leading architecture for modern processors.