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@riscv-non-isa

RISC-V Non-ISA Specifications

The Open-Standard Instruction Set Architecture
README.md

Welcome to the RISC-V Non-ISA Specifications 👋

RISC-V Logo

Non-ISA specifications do not add new instructions, create or change opcodes, or in any way modify the RISC-V ISA. They do help us to develop an ecosystem around the ISA Specifications.

Things you'll find here include:

  • ABI Documentation
  • Architecture Tests
  • Specifications like Debug, Processor Trace, and Software Interrupts

If you don't find what you're looking for here, try one of our other GitHub organizations:

Popular repositories Loading

  1. riscv-asm-manual riscv-asm-manual Public

    RISC-V Assembly Programmer's Manual

    Makefile 1.6k 247

  2. riscv-elf-psabi-doc riscv-elf-psabi-doc Public

    A RISC-V ELF psABI Document

    Python 802 178

  3. riscv-arch-test riscv-arch-test Public

    Assembly 588 235

  4. riscv-sbi-doc riscv-sbi-doc Public

    Documentation for the RISC-V Supervisor Binary Interface

    Makefile 425 96

  5. rvv-intrinsic-doc rvv-intrinsic-doc Public

    C 345 103

  6. riscv-trace-spec riscv-trace-spec Public

    RISC-V Processor Trace Specification

    C 193 57

Repositories

Showing 10 of 34 repositories
  • riscv-iommu Public

    RISC-V IOMMU Specification

    riscv-non-isa/riscv-iommu’s past year of commit activity
    C 128 CC-BY-4.0 27 1 3 Updated Sep 10, 2025
  • iopmp-spec Public

    This repository contains the specification source for the RISC-V IOPMP Specification. This document proposes a Physical Memory Protection Unit of Input/Output devices, IOPMP for short, to regulate the accesses issued from the bus masters.

    riscv-non-isa/iopmp-spec’s past year of commit activity
    C 33 CC-BY-4.0 9 0 1 Updated Sep 10, 2025
  • riscv-toolchain-conventions Public

    Documenting the expected behaviour and supported command-line switches for GNU and LLVM based RISC-V toolchains

    riscv-non-isa/riscv-toolchain-conventions’s past year of commit activity
    Makefile 152 CC-BY-4.0 42 10 1 Updated Sep 10, 2025
  • riscv-server-platform Public

    The RISC-V Server Platform specification defines a standardized set of hardware and sofware capabilities, that portable system software, such as operating systems and hypervisors, can rely on being present in a RISC-V server platform.

    riscv-non-isa/riscv-server-platform’s past year of commit activity
    TeX 19 CC-BY-4.0 13 5 0 Updated Sep 10, 2025
  • riscv-cbqri Public

    This repo holds the work area and revisions of a QoS register interface for caches and memory controllers specification. The QoS register interface is a non-ISA specification that supports configuring resource allocations to applications and monitoring the resource usage by applications.

    riscv-non-isa/riscv-cbqri’s past year of commit activity
    Makefile 7 CC-BY-4.0 10 0 1 Updated Sep 10, 2025
  • riscv-asm-manual Public

    RISC-V Assembly Programmer's Manual

    riscv-non-isa/riscv-asm-manual’s past year of commit activity
    Makefile 1,550 CC-BY-4.0 247 9 8 Updated Sep 10, 2025
  • server-soc Public

    The repo holds the draft non-ISA Server SoC specification being developed by the Server SoC specification TG and to release intermediate releases of the specification on milestones. Further downstream this repo will be used to release specifications for public review.

    riscv-non-isa/server-soc’s past year of commit activity
    TeX 25 CC-BY-4.0 12 2 0 Updated Sep 10, 2025
  • riscv-rpmi Public

    RISC-V Platform Management Interface Specification. OS-agnostic messaging interface for system management and control

    riscv-non-isa/riscv-rpmi’s past year of commit activity
    Makefile 13 CC-BY-4.0 12 1 2 Updated Sep 9, 2025
  • riscv-sbi-doc Public

    Documentation for the RISC-V Supervisor Binary Interface

    riscv-non-isa/riscv-sbi-doc’s past year of commit activity
    Makefile 425 CC-BY-4.0 96 13 2 Updated Sep 10, 2025
  • hart-trace-interface Public

    This Fast-Track will extract the Hart-Trace Interface chapter from the E-Trace spec and turn it into a standalone spec

    riscv-non-isa/hart-trace-interface’s past year of commit activity
    Makefile 1 CC-BY-4.0 2 5 4 Updated Sep 9, 2025
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