Course Description (By Curriculum)
4 to 5 hours
System programmers or application programmers who code Assembler programs or maintain system related programs and user exits
Knowledge of programming concepts and experience with OS/390 and System/390 architecture
After completing this course, the student will be able to:
• Identify types of number systems and convert numbers between them
• Identify the system components involved in Assembler programming
• Recognize coding conventions as they apply to an Assembler program in an OS/390 operating system environment
• Recognize the Assembler process and system structures, such as source, object and load units, and program objects
Overview of Number Systems
Conversions Between Decimal, Binary and Hexadecimal Number Systems
Overview of Data Representation in the S/390 Architecture
Data Types - Strings, Integers, Floating Point, Packed and Zoned Decimal
Overview of Systems Architecture
Data Format and Alignment
Types of Addressing
Program Status Word (PSW)
Registers - General Purpose, Access, Control, Floating Point
Types of Assembler Instructions
Types of Operands
Overview of Instruction Formats
About the Assembler Language
Syntax Notation
The Assembly Process
Assembler Statements and Syntax
Common Assembler Terms
Machine Instruction Formats
Assembler Directives
Conditional Alignment
Data Definitions
Control Sections
Establishing Addressability
Register Conventions
USING Instruction
DROP Instruction
Origin - ORG
Equates - EQU
Literals Expansion - LTORG
Dummy Control Sections - DSECTS
