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File No. S360-21
Form C28-6503-3
Systems Reference Library
IBM System/360 Basic Programming Support
Basic Assembler Language
This publication contains information
required for writing programs in the Basic
Assembler language, a symbolic programming
language for the IBM System/360. The Basic
Assembler language provides programmers
with a convenient way to make full use of
the operating capabilities of the. IBM
System/360. Source programs written in the
Basic Assembler language are translated
into object programs by a program called
the Basic Assembler.
The Basic Assembler and its language are
both described in this public~tion. The
description of the language includes the
rules for writing source programs, a list
of the machine instructions that can be
represented symbolically, and explanations
of the instructions used to control the
Basic Assembler. The description of the
Basic Assembler consists primarily of dis-
cussions of those features that affect the
planning and writing of source programs.
PREFACE
This publication describes a symbolic pro-
gramming language for the IBM System/360.
All the information required for writing
IBM System/360 programs is provided. This
includes the rules for writing source
statements, a description of the assembler
Rinstructions,