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VSEIAdvanced Functions
Application Programming
Macro User's Guide
Program Number 5666-301
Order Number SC33-6196-1
File No. 5370/4300-30
PREFACE
This book is a guide for programmers using the VSE/Advanced
Functions macro instructions (macros). Use of both input/output
control system (IOCS) macros and the system control macros is
described.
After an introductory chapter on the types and use of macros,
Chapter 2 gives a general description of how to define and process
files with the Sequential Access Method (SAM). The subsequent
chapters on file processing with SAM describe how to open, process,
and close files on the different types of I/O devices, and also how
to process device-independent system files. A chapter on system
services includes discussions of such topics as virtual storage
control, program linkage, and multitasking.
The use of the Direct Access Method (DAM) and Physical laCS (PIOCS)
is described in appendixes. (The Indexed Sequential Access Method,
ISAt-l-, is no longer described in this manual.) Several other
appendixes on a variety of topics, and an index complete the book.
As this book is intended as a guide to macro usage, you should be
familiar with others that introduce important prerequisite
information on the nature and use of laCS and system control
programs: