Software requirements

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High Level Assembler runs under the following operating systems. Unless otherwise stated, the assembler also operates under subsequent versions, releases, and modification levels of these systems:
  • z/VM® Version 5 Release 2
  • z/VSE® Version 3 Release 1 and Version 4
  • z/OS® Version 1 Release 2.0
  • Linux® for z Systems®
In addition, installation of High Level Assembler requires one of the following:
z/OS
IBM® System Modification Program/Extended (SMP/E). All load modules are reentrant, and you can place them in the link pack area (LPA).
z/VM
IBM VM Serviceability Enhancements Staged/Extended (VMSES/E) and VMFPLC2. Most load modules are reentrant, and you can place them in a logical saved segment.
z/VSE
Maintain System History Program (MSHP). Most phases are reentrant, and you can place them in the shared virtual area (SVA).