• ADD - Addition
• SUB - Subtraction
• SLL – Logical Left Shift
• SLT – Set Less Than
• SLTU – Set Less Than Unsigned
• XOR – XOR operation
• SRL – Logical Right Shift
• SRA – Arithmetic Right Shift
• OR – OR operation
• AND – AND operation

• LB - Load Byte
• LH - Load Half Word
• LW - Load Word
• LBU - Load Byte Unsigned
• LHU - Load Half Word Unsigned
• ADDI - Add Immediate
• SLTI - Set Less Than Immediate
• SLTIU - Set Less Than Immediate Unsigned
• XORI - XOR with immediate
• ORI - OR with immediate
• ANDI - AND immediate
• SLLI - Logical Left Shift with immediate
• SRLI - Logical Right Shift with immediate
• SRAI - Arithmetic Right Shift with immediate
• JALR - Jump and Link register

• CSRRW - Atomic Read / Write CSR
• CSRRS - Atomic Read and Set Bits in CSR
• CSRRC - Atomic Read and Clear Bits in CSR
• CSRRWI - Atomic Read / Write CSR with unsigned immediate
• CSRRSI - Atomic Read and Set Bits in CSR with unsigned immediate
• CSRRCI - Atomic Read and Clear Bits in CSR with unsigned immediate
• ECALL - Environmental call
• EBREAK - Environmental break
• FENCE - Fence
• FENCE.I - Fence with immediate

• SB - Store Byte
• SH - Store Half Word
• SW - Store Word

• BEQ - Branch Equality
• BNE - Branch Not Equal
• BLT - Branch Less Than
• BGE - Branch Greater Than
• BLTU - Branch Less Than Unsigned
• BGEU – Branch Greater Than Unsigned

• LUI - Load Upper Immediate
• AUIPC - Add Upper Immediate with PC

• JAL - Jump And Link

ADD (Addition) R-FORMAT

SUB (Subtraction) R-FORMAT

SLL (Logical Left Shift) R-FORMAT

SLT (Set Less Than) R-FORMAT

SLTU (Set Less Than Unsigned) R-FORMAT

XOR(XOR Operation) R-FORMAT

SRL (Logical Right Shift) R-FORMAT

SRA (Arithmetic Right Shift) R-FORMAT

OR (OR Operation) R-FORMAT

AND (AND Operation) R-FORMAT

LB (Load Byte) I-FORMAT

LH (Load Halfword) I-FORMAT

LW (Load Word) I-FORMAT

LBU(Load Byte Unsigned) I-FORMAT

LHU(Load Halfword Unsigned) I-FORMAT

ADDI (Addition Immediate) I-FORMAT

SLTI(Set Less Than Immediate) I-FORMAT

SLTIU(Set Less Than Immediate Unsigned) I-FORMAT

XORI(XOR Immediate) I-FORMAT

ORI (OR Immediate) I-FORMAT

ANDI (AND Immediate) I-FORMAT

SLLI(Logical Left Shift With Immediate) I-FORMAT

SRLI (Logical Right Shift with Immediate) I-FORMAT

SRAI (Arithmetic Right Shift with Immediate) I-FORMAT

JALR(Jump And Link Register) I-FORMAT

CSRRW (Atomic Read Write CSR) I-FORMAT

CSRRS (Atomic Read Write Set Bit) I-FORMAT

CSRRC(Atomic Read Write Clear Bit) I-FORMAT

CSRRWI (Atomic Read Write With Immediate) I-FORMAT

CSRRSI(Atomic Read Write Set Bit with Immediate) I-FORMAT

CSRRCI (Atomic Read Write Clear Bit with Immediate) I-FORMAT

I- FORMAT I-FORMAT

• ECALL – Transfer control to the operating system
• EBREAK – Transfer control to the debugger
• FENCE – Synchronizes thread
• FENCE.I- Synchronizes write to the instruction stream.

SB (Store Byte) S-FORMAT

SH (Store Halfword) S-FORMAT

SW (Store Word) S-FORMAT

BEQ (Branch Equality) B-FORMAT

BNE (Branch Not Equal) B-FORMAT

BLT(Branch Less Than) B-FORMAT

BGE (Branch Greater Than) B-FORMAT

BLTU(Branch Less Than Unsigned) B-FORMAT

BGEU(Branch Greater Than Unsigned) B-FORMAT

LUI (Load Upper Immediate) U-FORMAT

AUIPC(Add Upper Immediate With PC) U-FORMAT

JAL (Jump and Link) J-FORMAT