RISC-V Base Instruction Set v2.2 ASCII

risc-v-isa-ascii.txt

 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
+------------------------------------------------------------------------------------------------+
| funct7             | rs2          | rs1          | funct3 | rd           | opcode              | R-type
| imm[11:0]                         | rs1          | funct3 | rd           | opcode              | I-type
| imm[11:5]          | rs2          | rs1          | funct3 | imm[4:0]     | opcode              | S-type
| imm[12|10:5]       | rs2          | rs1          | funct3 | imm[4:1|11]  | opcode              | B-type
| imm[31:12]                                                | rd           | opcode              | U-type
| imm[20|10:1|11|19:12]                                     | rd           | opcode              | J-type
+------------------------------------------------------------------------------------------------+

+------------------------------------------------------------------------------------------------+
| imm[31:12]                                                | rd           | 0110111             | LUI
| imm[31:12]                                                | rd           | 0010111             | AUIPC
| imm[20|10:1|11|19:12]                                     | rd           | 1101111             | JAL
| imm[11:0]                         | rs1          | 000    | rd           | 1100111             | JALR
| imm[12|10:5]       | rs2          | rs1          | 000    | imm[4:1|11]  | 1100011             | BEQ
| imm[12|10:5]       | rs2          | rs1          | 001    | imm[4:1|11]  | 1100011             | BNE
| imm[12|10:5]       | rs2          | rs1          | 100    | imm[4:1|11]  | 1100011             | BLT
| imm[12|10:5]       | rs2          | rs1          | 101    | imm[4:1|11]  | 1100011             | BGE
| imm[12|10:5]       | rs2          | rs1          | 110    | imm[4:1|11]  | 1100011             | BLTU
| imm[12|10:5]       | rs2          | rs1          | 111    | imm[4:1|11]  | 1100011             | BGEU
| imm[11:0]                         | rs1          | 000    | rd           | 0000011             | LB
| imm[11:0]                         | rs1          | 001    | rd           | 0000011             | LH
| imm[11:0]                         | rs1          | 010    | rd           | 0000011             | LW
| imm[11:0]                         | rs1          | 100    | rd           | 0000011             | LBU
| imm[11:0]                         | rs1          | 101    | rd           | 0000011             | LHU
| imm[11:5]          | rs2          | rs1          | 000    | imm[4:0]     | 0100011             | SB
| imm[11:5]          | rs2          | rs1          | 001    | imm[4:0]     | 0100011             | SH
| imm[11:5]          | rs2          | rs1          | 010    | imm[4:0]     | 0100011             | SW
| imm[11:0]                         | rs1          | 000    | rd           | 0010011             | ADDI
| imm[11:0]                         | rs1          | 010    | rd           | 0010011             | SLTI
| imm[11:0]                         | rs1          | 011    | rd           | 0010011             | SLTIU
| imm[11:0]                         | rs1          | 100    | rd           | 0010011             | XORI
| imm[11:0]                         | rs1          | 110    | rd           | 0010011             | ORI
| imm[11:0]                         | rs1          | 111    | rd           | 0010011             | ANDI
| 0000000            | shamt        | rs1          | 001    | rd           | 0010011             | SLLI
| 0000000            | shamt        | rs1          | 101    | rd           | 0010011             | SRLI
| 0100000            | shamt        | rs1          | 101    | rd           | 0010011             | SRAI
| 0000000            | rs2          | rs1          | 000    | rd           | 0110011             | ADD
| 0100000            | rs2          | rs1          | 000    | rd           | 0110011             | SUB
| 0000000            | rs2          | rs1          | 001    | rd           | 0110011             | SLL
| 0000000            | rs2          | rs1          | 010    | rd           | 0110011             | SLT
| 0000000            | rs2          | rs1          | 011    | rd           | 0110011             | SLTU
| 0000000            | rs2          | rs1          | 100    | rd           | 0110011             | XOR
| 0000000            | rs2          | rs1          | 101    | rd           | 0110011             | SRL
| 0100000            | rs2          | rs1          | 101    | rd           | 0110011             | SRA
| 0000000            | rs2          | rs1          | 110    | rd           | 0110011             | OR
| 0000000            | rs2          | rs1          | 111    | rd           | 0110011             | AND
| 0000      | pred      | succ      | 00000        | 000    | 00000        | 0001111             | FENCE
| 0000      | 0000      | 0000      | 00000        | 001    | 00000        | 0001111             | FENCE.I
| 000000000000                      | 00000        | 000    | 00000        | 1110011             | ECALL
| 000000000001                      | 00000        | 000    | 00000        | 1110011             | EBREAK
| csr                               | rs1          | 001    | rd           | 1110011             | CSRRW
| csr                               | rs1          | 010    | rd           | 1110011             | CSRRS
| csr                               | rs1          | 011    | rd           | 1110011             | CSRRC
| csr                               | zimm         | 101    | rd           | 1110011             | CSRRWI
| csr                               | zimm         | 110    | rd           | 1110011             | CSRRSI
| csr                               | zimm         | 111    | rd           | 1110011             | CSRRCI
+------------------------------------------------------------------------------------------------+