IBM® High Level Assembler and Toolkit Feature is a flexible development solution for all Assembler Language applications.

Improve programmer productivity and simplify program development and maintenance with this assembler and optional toolkit.

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Features and benefits

Key features include:

IBM High Level Assembler and Toolkit Feature provides numerous technology and business benefits:

System requirements

High Level Assembler (HLASM) and Toolkit Feature runs on MVS/ESA, OS/390, VM/ESA and VSE/ESA.


Operating SystemSoftwareHardware
MVS/ESA IBM System Modification Program/Extended (SMP/E)
VM/ESA IBM VM Serviceability Enhancements Staged/Extended (VMSES/E) and VMFPLC2
VSE/ESA Maintain System History Program (MSHP) to install High Level Assembler

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