[电] addressless instruction format, zero-address instruction format
líng dì zhǐ zhǐ lìng gé shì ㄌㄧㄥˊ ㄉㄧˋ ㄓˇ ㄓˇ ㄌㄧㄥˋ ㄍㄜˊ ㄕˋ