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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 249

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

    A RISC-V ELF psABI Document

    Python 805 178

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

    Assembly 596 238

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

    Documentation for the RISC-V Supervisor Binary Interface

    Makefile 432 98

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

    C 347 105

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

    RISC-V Processor Trace Specification

    C 194 57

Repositories

Showing 10 of 35 repositories
  • riscv-security-model Public

    RISC-V Security Model

    riscv-non-isa/riscv-security-model’s past year of commit activity
    Makefile 32 CC-BY-4.0 17 0 1 Updated Oct 2, 2025
  • riscv-semihosting Public
    riscv-non-isa/riscv-semihosting’s past year of commit activity
    Makefile 32 CC-BY-SA-4.0 12 2 2 Updated Oct 2, 2025
  • riscv-asm-manual Public

    RISC-V Assembly Programmer's Manual

    riscv-non-isa/riscv-asm-manual’s past year of commit activity
    Makefile 1,558 CC-BY-4.0 249 9 8 Updated Oct 2, 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 77 CC-BY-4.0 47 17 3 Updated Oct 2, 2025
  • riscv-acpi-rimt Public

    RISC-V ACPI I/O Mapping Table Specification

    riscv-non-isa/riscv-acpi-rimt’s past year of commit activity
    Makefile 6 CC-BY-4.0 4 2 1 Updated Oct 2, 2025
  • riscv-external-debug-security Public

    The RISC-V External Debug Security Specification

    riscv-non-isa/riscv-external-debug-security’s past year of commit activity
    Makefile 20 CC-BY-4.0 4 0 1 Updated Oct 2, 2025
  • riscv-brs Public

    The Boot and Runtime Services (BRS) specification provides the software requirements for system vendors and Operating System Vendors (OSVs) to interoperate with one another by providing expectations for the Operating System (OS) to utilize in acts of device discovery, system management, and other rich operations provided in this specification.

    riscv-non-isa/riscv-brs’s past year of commit activity
    TeX 54 CC-BY-4.0 20 15 1 Updated Oct 2, 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 432 CC-BY-4.0 98 13 4 Updated Oct 2, 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 14 CC-BY-4.0 12 2 2 Updated Oct 2, 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 26 CC-BY-4.0 12 2 1 Updated Oct 2, 2025
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