Practical z/OS HLASM: for Application Programmers

by Andrew Chapman

This book doesn’t set out to teach the reader HLASM by theoretically discussing z/OS architecture and all its mnemonics in the same manner as one doesn’t need to know how every part of a car works, in order to be able to drive it.
This book concentrates on analysing 10 practical HLASM examples, which the author has writen and deployed at various blue chip sites and installations, and how to interface them to the high-level language COBOL.
The examples cover a WTO interface, a generic read and dynamically accessing the RSA to be able to display program, linkage and, ultimately system information.
On the way you'll be guided from a description of the GPRs, mnemonics, MACRO logic, prologue and epilogue code and a description of the RSAs.
The book was started in 2001 and bought up to date in 2024. It includes several useful discourses because of this covering debugging, optimisation and brief excursions into z/OS V2.1 JES2 enhancements. The book also includes all the author's notes and links.
All the software examples in the book are available in XMIT format in "the cloud" and a detailed section discusses how to transfer these PC/ZIP files to your z/OS machine.

382 pages, Kindle Edition

Published April 23, 2024

About the author

This is the disambiguation profile for otherwise undifferentated authors publishing as Andrew Chapman.