Includes IBM mainframe high level language compatible macro assembler, linker, and emulator for seamless execution of COBOL and mainframe assembler applications on Windows PC.

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

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.

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

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!

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

MVS JCL (Assembly 370)

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

A collection of general articles on assembly language programming in IBM mainframe assembler (System 370/390). Individual articles cover specific instructions with programming tips.

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