created	author	eip	requires	status	title	type	category
2017-07-28T00:00:00.000Z	Alex Beregszaszi (@axic)	1803	141	Draft	Rename opcodes for clarity	Standards Track	Interface

eip-1803

Abstract

Rename the BALANCE, SHA3, NUMBER, GASLIMIT, GAS and INVALID opcodes to reflect their true meaning.

Rename the opcodes as follows:

BALANCE (0x31) to EXTBALANCE to be in line with EXTCODESIZE, EXTCODECOPY and EXTCODEHASH
SHA3 (0x20) to KECCAK256
NUMBER (0x43) to BLOCKNUMBER
GASLIMIT (0x45) to BLOCKGASLIMIT to avoid confusion with the gas limit of the transaction
GAS (0x5a) to GASLEFT to be clear what it refers to
INVALID (0xfe) to ABORT to clearly articulate when someone refers this opcode as opposed to "any invalid opcode"

This has no effect on any code. It can influence what mnemonics assemblers will use.

Not applicable.

EIP-6 previously renamed SUICIDE (0xff) to SELFDESTRUCT. Renaming SHA3 was previously proposed by EIP-59.

Copyright and related rights waived via CC0.