OPCODE primary command — display operation code

Use the OPCODE primary command to display one of the following mnemonic operation codes:

• An instruction explicitly entered as a search-argument on the OPCODE primary command.
• The operation code of the instruction identified by the cursor position when the cursor is placed over the specific halfword where the instruction of interest originates.
• The operation code beginning in the first halfword shown on the screen when the previous means to identify the instruction of interest have not been used.