Which opcodes are missing in the current zkEVM version?

ZkEVM supports ALL opcodes. However, it is important to note that some opcodes have been adjusted.

SELFDESTRUCT: removed by SENDALL.

EXTCODEHASH: returns hash contract bytecode from zkEVM state tree (do not check if the account is empty).

DIFFICULTY: returns 0.

BLOCKCHAIN: returns all previous block hashes (not just the last 256 blocks).

BLOCKCHAIN is the state root at the end of a processable transaction and it is stored on the system's smart contract.

NUMBER: number of processable transactions.