RV32IMC
RV32IMC is a 32‑bit subset of the RISC‑V instruction set architecture (ISA). It combines the base RV32I core with two optional extensions: the integer Multiply‑Divide extension (M) and the Compressed instruction extension (C). This combination delivers a compact, power‑efficient design that retains high performance for integer workloads while reducing code size.
The RV32I base ISA defines a register‑file of 32 general‑purpose registers, a small set of exception and
The M extension adds instructions for signed and unsigned integer multiplication and division, including 64‑bit result
The C extension introduces a 16‑bit compressed instruction set that reduces instruction width for frequently used
Many microcontrollers and low‑power embedded processors adopt RV32IMC because it balances functional coverage and silicon area.
Binary compatibility between RV32IMC implementations is guaranteed, facilitating code sharing across vendor products. Since the extensions
In summary, RV32IMC represents a practical, widely adopted configuration of the RISC‑V ISA that delivers efficient