RISC-V Decoder

Instruction Decoding in the RISC-V Architecture (RV32I)

RISC-V is an open-source instruction set architecture (ISA) based on reduced instruction set computer (RISC) principles. The base set, known as RV32I, defines 32-bit instructions that the processor must interpret and execute at the silicon level.

The Decode phase extracts the fundamental fields of the binary word: the operation code (opcode), the source registers (rs1, rs2), the destination register (rd), and the immediate values. Understanding how these bits are packaged is the first step to programming in low-level assembly.