This class is an intermediate level course in Assembler Language programming. Topics include an introduction into subroutines, interruptible instructions and indexing

Mainframe Training Audience

This class is intended for experienced programmers that have a good understanding of basic OS/390 architecture.

Mainframe Training Prerequisites

Assembler Language Introduction

Mainframe Training Course duration

5 days

Mainframe Training Course outline

Assembler Language Program Structure
	Review register conventions Review data definitions; introduce address constants (ADCON and VCON). CSECT and DSECT usage Using multiple base registers
Using Instructions with Indexes and Masks
	LOAD instructions. Data arrays and tables.
Instructions
	Test Under Mask Insert/Store character instructions. Shift instructions.
Arithemetic Instructions
	Floating point operations
Basic I/O Operations
	Review QSAM file processing Introduction to BSAM processing
Calling external programs
	CALL, LOAD, LINK, and XCTL instructions. Use of WAIT/POST macros. Managing subtasks