📖The RISC-V Instruction Set Manual Volume II: Privileged Architecture

authors
RISC-V Privileged Horizontal Committee
url
https://drive.google.com/file/d/17GeetSnT5wW3xNuAHI95-SI1gPGd5sJ_/view
  • privilege levels:
    • 0 — User/Application (U)
    • 1 — Supervisor (S)
    • 3 — Machine (M)
  • p.11 implementation may include debug mode (D) which is even more privileged than M