Basic routines in High Level Assembler Language.

Text for the class 'IBM Mainframe Assembly Language Programming: CS310', by Dr. Laurence Leff at Western Illinois University.

MVS Freeware (including S/370 - S/390 Assembler). See the links page to other MVS freeware

The most comprehensive and flexible product available for the debugging of Assembler language programs which execute in the OS/390 (MVS) operating system environments on IBM (and compatible) mainframes.

Tips and Frequently Asked questions about IBM's High Level Assembler (HLASM) and S/390 Assembler programming

Use the Edge Portfolio Analyzer to inventory your load libraries (including Assemblers used)

System/390 on Intel-Based Servers

MVS JCL (Assembly 370)

a macro language for IBM mainframe environment ( VM/CMS, MVS, TSO/MVS, VSE and CICS )

HLASM for MVS, VM, VSE, and the optional HLASM Toolkit Feature provide a comprehensive development environment for System/390 assembler applications.

NaSPA members include programmers, analysts, managers, IS and IT professionals.

Inhouse doc for NIH, but also contains general assembler programming tips.

Dignus' HLASM compatible assembler product for the IBM mainframe. It's available as a native assembler for OS/390 and z/OS, or as a cross-assembler hosted on Windows, AIX, Solaris, FreeBSD, Linux and Linux/390.

Now you can develop and maintain 370/390 assembler programs from your workstation! With the Tachyon Operating System you can test 370/390 Programs On Your Workstation!

at SimoTime site. Provides examples of 370 assembler coding techniques, instruction set, utilities.

Runs under Microsoft Windows which scans source code to extract a programs structure. It works with existing COBOL, Mainframe Assembler, PL/I, and RPG source code.

Useful hints and tips on writing IBM mainframe assembler code.