This information supports z/OS® (5694-A01).

Purpose of this information

This information nformation that you need to write installation-supplied UIMs.

Who should read this information

This book is intended for system programmers who are responsible for writing installation-supplied UIMs. The user must know the hardware and software configuration characteristics of the I/O unit that needs a UIM, and should be familiar with basic MVS concepts, with the Input/Output Configuration Program (IOCP), and with HCD

Prerequisite and related information

Where necessary, this document references information in other documents, using shortened versions of the document title. For complete titles and order numbers of the documents for all products that are part of z/OS, see z/OS Information Roadmap.

To find the most current edition of a document, you can look on the Web. Point your browser to the z/OS home page and click on Library:

http://www.ibm.com/systems/z/os/zos/

When you are in the z/OS library area, use the messages and codes database to search for the message ID you are interested in.