The tables below list all documented opcodes in extension set A5 for IBM mainframe processors. Each opcode links to a text section with some additional info on the pertinent opcode.
The first table lists all opcodes in the current extension set A5. These are all Halfword-Immediate operations. Older versions of the architecture supported a different extension set A5, which was used for Vector-Facility instructions. These are in the second table.
Please note that the creation of descriptions for all individual instructions is an ongoing process. As yet no such descriptions have been created for the opcodes on this page.
All instructions in this table are four bytes in length. The first byte always has a value of X'A5', the second half of the second byte designates the exact instruction.
All instructions in this table are four bytes in length. The first byte always has a value of X'A5', the second byte designates the exact instruction.
All entries in this table have a slightly darker background because the entire extension set is no longer supported on either current mainframe hardware or by IBM's current version of HLASM. The associated mnemonics are printed in italics.
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To the Halfword-Immediate instructions.
To the Vector Facility instructions.
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