.-OPTABLE=UNI------.   
>>-+------------------+----------------------------------------><
   '-OPTABLE=-+-DOS-+-'   
              +-ESA-+     
              +-XA--+     
              +-370-+     
              +-ZOP-+     
              +-YOP-+     
              +-ZS3-+     
              +-ZS4-+     
              +-ZS5-+     
              '-ZS6-'     

UNI

the assembler loads and uses the operation code table that contains the symbolic operation codes for the machine instructions that can be used on all System/370 and System/390® systems, including those with a vector facility.

DOS

the assembler loads and uses the DOS operation code table. The DOS operation code is designed specifically for assembling programs previously assembled using the DOS/VSE assembler. The operation code table contains the System/370 machine instructions, excluding those with a vector facility.

ESA

the assembler loads and uses the operation code table that contains the symbolic operation codes for the machine instructions specific to systems operating according to the ESA/370 or ESA/390 architecture, including those with a vector facility.

XA

the assembler loads and uses the operation code table that contains the symbolic operation codes for the machine instructions specific to systems operating in System/370 extended-architecture mode, including those with a vector facility.

370

the assembler loads and uses the operation code table that contains the symbolic operation codes for the machine instructions specific to System/370 systems, including those with a vector facility.

ZOP

the assembler loads and uses the operation code table that contains the symbolic operation codes for the machine instructions specific to Z/Architecture systems.

YOP

the assembler loads and uses the operation code table that contains the symbolic operation codes for the machine instructions specific to Z/Architecture systems with the Long-Displacement Facility, the DAT Enhancement Facility, the Message-Security Assist, and the HFP Multiply-Add/Subtract Facility.

ZS3

the assembler loads and uses the operation code table that contains the symbolic operation codes for the machine instructions specific to Z/Architecture systems with the decimal floating point facility.

ZS4

the assembler loads and uses the operation code table that contains the symbolic operation codes for the machine instructions specific to Z/Architecture systems with the general instructions extensions facility.

ZS5

the assembler loads and uses the operation code table that contains the symbolic operation codes for the machine instructions specific to Z/Architecture systems with the general instructions extensions facility and z196 instructions.

ZS6

the assembler loads and uses the operation code table that contains the symbolic operation codes for the machine instructions specific to Z/Architecture systems with the general instructions extensions facility and zEnterprise EC12 (zEC12) instructions.

Default

OPTABLE=UNI