Zicsr Extension Versions 2.0.0 State ratified Ratification date == Synopsis Control and status registers Instructions The following instructions are affected by this extension: csrrc Atomic Read and Clear Bits in CSR csrrci Atomic Read and Clear Bits in CSR with Immediate csrrs Atomic Read and Set Bits in CSR csrrsi Atomic Read and Set Bits in CSR with Immediate csrrw Atomic Read/Write CSR csrrwi Atomic Read/Write CSR Immediate