RISC-V
Instruction Set Architecture

General

• History
• Families

Base Variants(base)

• RV32
• RV64
• RV128

Standard Extensions(all)

• A
• B
• C
• D
• E
• F
• G
• I
• J
• L
• M
• N
• P
• Q
• T
• V

Topics

• Foundation
• Non-Standard Extensions
• Addressing Modes
• Registers
• Assembly
• Interrupts
• Microarchitectures

The RISC-V Foundation is a non-profit consortium established to standardize and promote the RISC-V ISA. The RISC-V foundation is a 501(C)(6) organization established on July 31, 2015.

Mission Statement

The RISC-V Foundation is a non-profit consortium chartered to standardize, protect, and promote the free and open RISC-V instruction set architecture together with its hardware and software ecosystem for use in all computing devices.

Principles

• Ensure RISC-V ISA and standards remain open and license-free to everyone
• Standard specifications must always be publicly available as an online download
• The compatibility test suites must always be publicly available as a source code download

External links

• https://riscv.org/ Foundation website