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+## Opcodes
+
+<br>
+
+EVM instruction set can be classified into 11 categories:
+
+* Stop and Arithmetic Operations
+* Comparison & Bitwise Logic Operations
+* SHA3
+* Environmental Information
+* Block Information
+* Stack, Memory, Storage and Flow Operations
+* Push Operations
+* Duplication Operations
+* Exchange Operations
+* Logging Operations
+* System Operations
+
+
+
+<br>
+
+---
+
+### Stop and Arithmetic Operation
+
+0x00 STOP 0 0 Halts execution
+
+0x01 ADD 2 1 Addition operation
+
+0x02 MUL 2 1 Multiplication operation
+
+0x03 SUB 2 1 Subtraction operation
+
+0x04 DIV 2 1 Integer division operation
+
+0x05 SDIV 2 1 Signed integer division operation (truncated)
+
+0x06 MOD 2 1 Modulo remainder operation
+
+0x07 SMOD 2 1 Signed modulo remainder operation
+
+0x08 ADDMOD 3 1 Modulo addition operation
+
+0x09 MULMOD 3 1 Modulo multiplication operation
+
+0x0a EXP 2 1 Exponential operation
+
+0x0b SIGNEXTEND 2 1 Extend length of two’s complement signed integer
+
+
+<br>
+
+---
+
+## Comparison & Bitwise Logic Operations
+
+0x10 LT 2 1 Less-than comparison
+
+0x11 GT 2 1 Greater-than comparison
+
+0x12 SLT 2 1 Signed less-than comparison
+
+0x13 SGT 2 1 Signed greater-than comparison
+
+0x14 EQ 2 1 Equality comparison
+
+0x15 ISZERO 1 1 Simple not operator
+
+0x16 AND 2 1 Bitwise AND operation
+
+0x17 OR 2 1 Bitwise OR operation
+
+0x18 XOR 2 1 Bitwise XOR operation
+
+0x19 NOT 1 1 Bitwise NOT operation
+
+0x1a BYTE 2 1 Retrieve single byte from word
+
+0x1b SHL 2 1 Left shift operation
+
+0x1c SHR 2 1 Logical right shift operation
+
+0x1d SAR 2 1 Arithmetic (signed) right shift operation
+
+<br>
+
+---
+
+### Environmental Information 
+
+0x30 ADDRESS 0 1 Get address of currently executing account
+
+0x31 BALANCE 1 1 Get balance of the given account
+
+0x32 ORIGIN 0 1 Get execution origination address
+
+0x33 CALLER 0 1 Get caller address
+
+0x34 CALLVALUE 0 1 Get deposited value by the instruction/transaction responsible for this execution
+
+0x35 CALLDATALOAD 1 1 Get input data of current environment
+
+0x36 CALLDATASIZE 0 1 Get size of input data in current environment
+
+0x37 CALLDATACOPY 3 0 Copy input data in current environment to memory
+
+0x38 CODESIZE 0 1 Get size of code running in current environment
+
+0x39 CODECOPY 3 0 Copy code running in current environment to memory
+
+0x3a GASPRICE 0 1 Get price of gas in current environment
+
+0x3b EXTCODESIZE 1 1 Get size of an account’s code
+
+0x3c EXTCODECOPY 4 0 Copy an account’s code to memory
+
+0x3d RETURNDATASIZE 0 1 Get size of output data from the previous call from the current environment
+
+0x3e RETURNDATACOPY 3 0 Copy output data from the previous call to memory
+
+0x3f EXTCODEHASH 1 1 Get hash of an account’s code
+
+<br>
+
+---
+
+
+### Block Information 
+
+0x40 BLOCKHASH 1 1 Get the hash of one of the 256 most recent complete blocks
+
+0x41 COINBASE 0 1 Get the block’s beneficiary address
+
+0x42 TIMESTAMP 0 1 Get the block’s timestamp
+
+0x43 NUMBER 0 1 Get the block’s number
+
+0x44 DIFFICULTY 0 1 Get the block’s difficulty
+
+0x45 GASLIMIT 0 1 Get the block’s gas limit
+
+<br>
+
+---
+
+### Stack, Memory, Storage and Flow Operations 
+
+0x50 POP 1 0 Remove item from stack
+
+0x51 MLOAD 1 1 Load word from memory
+
+0x52 MSTORE 2 0 Save word to memory
+
+0x53 MSTORE8 2 0 Save byte to memory
+
+0x54 SLOAD 1 1 Load word from storage
+
+0x55 SSTORE 2 0 Save word to storage
+
+0x56 JUMP 1 0 Alter the program counter
+
+0x57 JUMPI 2 0 Conditionally alter the program counter
+
+0x58 PC 0 1 Get the value of the program counter prior to the increment corresponding to this instruction
+
+0x59 MSIZE 0 1 Get the size of active memory in bytes
+
+0x5a GAS 0 1 Get the amount of available gas, including the corresponding reduction for the cost of this instruction
+
+0x5b JUMPDEST 0 0 Mark a valid destination for jumps. This operation has no effect on machine state during execution.
+
+<br>
+
+---
+
+### Push Operations 
+
+0x60 PUSH1 0 1 Place 1 byte item on stack
+
+0x61 PUSH2 0 1 Place 2-byte item on stack
+
+PUSH3, PUSH4, PUSH5…PUSH31 place 3, 4, 5..31 byte items on stack respectively
+
+0x7f PUSH32 0 1 Place 32-byte (full word) item on stack
+
+<br>
+
+---
+
+### Duplication Operations 
+
+0x80 DUP1 1 2 Duplicate 1st stack item
+
+DUP2, DUP3..DUP15 duplicate 2nd, 3rd..15th stack item respectively
+
+0x8f DUP16 16 17 Duplicate 16th stack item
+
+<br>
+
+---
+
+### Exchange Operations
+
+0x90 SWAP1 2 2 Exchange 1st and 2nd stack items
+
+0x91 SWAP2 3 3 Exchange 1st and 3rd stack items
+
+SWAP3, SWAP4..SWAP15 exchange 1st and 4th..15th stack items respectively
+
+0x9f SWAP16 17 17 Exchange 1st and 17th stack items
+
+
+<br>
+
+---
+
+### Logging Operations
+
+0xa0 LOG0 2 0 Append log record with no topics
+
+0xa1 LOG1 3 0 Append log record with one topic
+
+0xa2 LOG2 4 0 Append log record with two topics
+
+0xa3 LOG3 5 0 Append log record with three topics
+
+0xa4 LOG4 6 0 Append log record with four topics
+
+<br>
+
+---
+
+### System Operations 
+
+0xf0 CREATE 3 1 Create a new account with associated code
+
+0xf1 CALL 7 1 Message-call into an account
+
+0xf2 CALLCODE 7 1 Message-call into this account with an alternative account’s code
+
+0xf3 RETURN 2 0 Halt execution returning output dat
+
+0xf4  DELEGATECALL 6 1 Message-call into this account with an alternative account’s code, but persisting the current values for sender and value
+
+0xf5 CREATE2 4 1 Create a new account with associated code
+
+0xfa STATICCALL 6 1 Static message-call into an account
+
+0xfd REVERT 2 0 Halt execution reverting state changes but returning data and remaining gas
+
+0xfe INVALID ∅ ∅ Designated invalid instruction
+
+0xff SELFDESTRUCT 1 0 Halt execution and register account for later deletion
+