HLASM Language Reference

Organization of this Manual
This manual is organized as follows:
Part 1, Assembler Language—Structure and Concepts
Chapter 1, Introduction, describes the assembler language and how the
assembler processes assembler language source statements. It also
describes the relationship between the assembler and the operating
system, and suggests ways to make the task of coding easier.
Chapter 2, Coding and Structure, describes the coding rules for and the
structure of the assembler language. It also describes the language
elements in a program.
Chapter 3, Program Structures and Addressing describes the concepts
of addressability and symbolic addressing. It also describes control
sections and the linkage between control sections.
Part 2, Machine and Assembler Instruction Statements
Chapter 4, Machine Instruction Statements, describes the machine
instruction types and their formats.
Chapter 5, Assembler Instruction Statements, describes the assembler
instructions in alphabetical order.
Part 3, Macro Language
Chapter 6, Introduction to Macro Language, describes the macro facility
concepts including macro definitions, macro instruction statements, source
and library macro definitions, and conditional assembly language.
Chapter 7, How to Specify Macro Definitions, describes the components
of a macro definition.
Chapter 8, How to Write Macro Instructions, describes how to call
macro definitions using macro instructions.
Chapter 9, How to Write Conditional Assembly Instructions, describes
the conditional assembly language including SET symbols, sequence
symbols, data attributes, branching, and the conditional assembly
instructions.
Chapter 10, MHELP Instruction, describes the MHELP instruction that
you can use to control a set of macro trace and dump facilities.
Appendixes
Appendix A, Assembler Instructions, summarizes the assembler
instructions and assembler statements, and the related name and operand
entries.
Appendix B, Summary of Constants, summarizes the types of constants
and related information.
Appendix C, Macro and Conditional Assembly Language Summary,
summarizes the macro language described in Part 3. This summary also
includes a summary table of the system variable symbols.
Appendix D, Standard Character Set Code Table, shows the code table
for the assembler's standard character set.
About this Manual
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