RISC-V ISA Explorer · Compressed (Zc*)

Zcmop: Compressed May-Be-Ops

Ratified 2024-03 · version 1.0.0

Reserves eight 16-bit no-op encodings that future extensions can redefine without breaking older code.

Typical use: Reserved 16-bit NOP/future ops

Specification

Open Zcmop in the explorer

Dependencies

Requires

Instructions (8)

MnemonicNameEncodingMatchMask
C.MOP.1Compressed May-Be-Operation 1----------------01100000100000010x60810xffff
C.MOP.11Compressed May-Be-Operation 11----------------01100101100000010x65810xffff
C.MOP.13Compressed May-Be-Operation 13----------------01100110100000010x66810xffff
C.MOP.15Compressed May-Be-Operation 15----------------01100111100000010x67810xffff
C.MOP.3Compressed May-Be-Operation 3----------------01100001100000010x61810xffff
C.MOP.5Compressed May-Be-Operation 5----------------01100010100000010x62810xffff
C.MOP.7Compressed May-Be-Operation 7----------------01100011100000010x63810xffff
C.MOP.9Compressed May-Be-Operation 9----------------01100100100000010x64810xffff