High Level Assembler - Opcodes overview, Extension set 01

The table below lists all documented opcodes in extension set 01 for IBM mainframe processors. Each opcode links to a text section with some additional info on the pertinent opcode.

Opcode Assignments.

Remark:
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.

Extension Set 01 - Varia

All instructions in this table are two bytes in length. The first byte always has a value of X'01', the second byte designates the exact instruction. Hence, the instructions on this page take no arguments, unless they be implied.

Entries with a slightly darker background are no longer supported on current mainframe hardware and/or not supported by IBM's current version of HLASM. The associated mnemonics are printed in italics.
Opcodes that have no (known) mnemonic assigned to them are denoted by their hexadecimal opcode; these are explained below the table.

01 _0 _1 _2 _3 _4 _5 _6 _7 _8 _9 _A _B _C _D _E _F
0_   PR UPT X'0103' PTFF CMSG TMSG SCKPF TMPS CMPS PFPO TAM SAM24 SAM31 SAM64  
1_                                
2_                                
3_                                
4_                                
5_                                
6_                                
7_                                
8_                                
9_                                
A_                                
B_                                
C_                                
D_                                
E_                                
F_                               TRAP2

 

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