Introduction

IBM® High Level Assembler for z/OS® & z/VM® & z/VSE® is an IBM licensed program that can be used to assemble assembler language programs that use the following machine instructions:
  • System/370
  • System/370 Extended Architecture (370-XA)
  • Enterprise Systems Architecture/370 (ESA/370)
  • Enterprise Systems Architecture/390 (ESA/390)
  • z/Architecture®
  • Linux® for z Systems®