z390 Assembler Studio is an open-source Integrated Development Environment (IDE) designed for writing and debugging IBM S/390 (mainframe) assembler code. It is primarily a graphical front-end that integrates with the z390 Portable Mainframe Assembler and Emulator, allowing developers to learn and test mainframe assembly language on modern platforms like Windows and Linux without needing a physical mainframe. Key Components and Features
Integrated Environment: It combines a code editor with an integrated debugger, specifically tailored for the z390 emulator.
Mainframe Compatibility: The underlying z390 tool supports High-Level Assembler (HLASM) compatible code, linkage editors, and structured programming macros.
Platform Portability: Because it is Java-based, it can run on any system with a Java runtime (J2SE 1.6+), including Windows, Linux, and macOS.
Emulator Capabilities: Beyond simple assembly, the environment supports QSAM/VSAM file processing, CICS transaction emulation, and even a zCobol compiler. Moving from S/360 to z390… using Bill Qualls book..
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