Course Description

z/OS Assembler: Basic Interfaces

This course: course objectives; course outline;
Assembler curriculum; Topic list; Course list; Home page

Benefits

Students who complete this course will be able to write or maintain Assembler programs that: process or create variable length records; involve subroutine linkages; use dynamic serial linkages such as LINK, LOAD, DELETE, XCTL; use other system service routines.

Students will also have a solid basis for debugging and dump reading Assembler programs.

Audience

Experienced Assembler programmers needing to learn additional support, design, debugging, or maintenance skills.

Prerequisites

This course is intended as a follow-on to course C410.

Related IBM Materials

This course is drawn from these IBM manuals; access to them in the classroom is recommended but not required:

Assembler Services Guide
Assembler Services Reference
Using Data Sets
Macro Instructions for Data Sets
Program Management

• Program linkages and save areas
• Obtaining PARM data from the EXEC statement
• QSAM macros and processing
• SYNAD routines
• Subroutines and the Linkage Editor
• The Program Binder
• Debugging and dump reading
• Timing services
• The WTO, TIME, STCKCONV, CONVTOD macros
• The SNAP macro
• Managing print files
• Variable length records
• QSAM update in place (PUTX)
• Dynamic serial linkages: LINK, LOAD, DELETE, XCTL
• Virtual storage services: GETMAIN, FREEMAIN
• Writing reentrant programs
• I/O in AMODE 31

Exercises

There are eight hands-on exercises