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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 1.5k 249

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

    A RISC-V ELF psABI Document

    Python 784 169

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

    Assembly 564 230

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

    Documentation for the RISC-V Supervisor Binary Interface

    Makefile 409 95

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

    C 335 98

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

    RISC-V Processor Trace Specification

    C 184 53

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 119 CC-BY-4.0 23 1 5 Updated Jun 12, 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 409 CC-BY-4.0 95 11 0 Updated Jun 12, 2025
  • rvv-intrinsic-doc Public
    riscv-non-isa/rvv-intrinsic-doc’s past year of commit activity
    C 335 BSD-3-Clause 98 22 9 Updated Jun 12, 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
    Makefile 29 CC-BY-4.0 8 12 1 Updated Jun 12, 2025
  • riscv-security-model Public

    RISC-V Security Model

    riscv-non-isa/riscv-security-model’s past year of commit activity
    Makefile 30 CC-BY-4.0 17 0 1 Updated Jun 11, 2025
  • riscv-elf-psabi-doc Public

    A RISC-V ELF psABI Document

    riscv-non-isa/riscv-elf-psabi-doc’s past year of commit activity
    Python 784 CC-BY-4.0 169 60 24 Updated Jun 11, 2025
  • riscv-c-api-doc Public

    Documentation of the RISC-V C API

    riscv-non-isa/riscv-c-api-doc’s past year of commit activity
    Makefile 76 CC-BY-4.0 45 17 5 Updated Jun 10, 2025
  • riscv-acpi-ffh Public

    The repo will be used to hold the draft non-ISA RISC-V ACPI Functional Fixed Hardware (FFH) specification

    riscv-non-isa/riscv-acpi-ffh’s past year of commit activity
    Makefile 4 CC-BY-4.0 4 1 2 Updated Jun 6, 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 151 CC-BY-4.0 42 11 2 Updated Jun 5, 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 11 CC-BY-4.0 9 3 1 Updated Jun 4, 2025
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