Decodificador RISC-V

funct7
[31:25]

rs2
[24:20]

rs1
[19:15]

funct3
[14:12]

rd
[11:7]

opcode
[6:0]

Tipo R no tiene inmediato

imm[11:0]
[31:20]

rs1
[19:15]

funct3
[14:12]

rd
[11:7]

opcode
[6:0]

Inmediato (32 bits con extensión de signo):

imm[11:5]
[31:25]

rs2
[24:20]

rs1
[19:15]

funct3
[14:12]

imm[4:0]
[11:7]

opcode
[6:0]

Inmediato (32 bits con extensión de signo):

imm[12]
[31]

imm[10:5]
[30:25]

rs2
[24:20]

rs1
[19:15]

funct3
[14:12]

imm[4:1]
[11:8]

imm[11]
[7]

opcode
[6:0]

Inmediato (32 bits con extensión de signo, bit 0 implícito = 0):

imm[31:12]
[31:12]

rd
[11:7]

opcode
[6:0]

Inmediato (32 bits, bits [11:0] implícitos = 0):

imm[20]
[31]

imm[10:1]
[30:21]

imm[11]
[20]

imm[19:12]
[19:12]

rd
[11:7]

opcode
[6:0]

Inmediato (32 bits con extensión de signo, bit 0 implícito = 0):