Changed Assembler instructions

• New QY-type and SY-type address constants provide resolution into long-displacement.
• Support for three decimal floating-point data types, increasing instruction addressability and reducing the need for additional instructions.

Unified Opcode table

• OPTABLE option
  • The OPTABLE option is permitted on the *PROCESS statement.

Mnemonic tagging

• Suffix tags for instruction mnemonics let you use identically-named macro instructions and machine instructions in the same source program.

New features

• High Level Assembler for Linux on System z®

New options

• WORKFILE

Changed assembler instructions

• DC/DS
  • Decimal floating-point constants
  • Unsigned binary constants

Changed assembler statements

• OPTABLE option for ACONTROL

Services Interface

• HLASM Services Interface for I/O exits added

Miscellany

• Qualifiers identified in symbol cross-reference.

High Level Assembler Release 6 requires processors supporting Architecture Level Set 1 (ALS-1), for example:

• S/390® Multiprise 3000 (or compatible server)
• S/390 Parallel Enterprise — G5, G6 (or compatible server)
• zSeries® z900, z990, and z800 servers (or compatible)

and later systems. For details, see

  http://www.ibm.com/systems/z/hardware/index.html