Table of Contents

1. Short Summary
2. Duration
3. Content Description
4. Objectives
5. Agenda
6. Audience
7. Skill Level
8. Labs?
9. Keywords
10. Prerequisites
11. Enrollment
12. Errata
13. Follow-on Courses

Short Summary

This course is designed for application programmers and beginning system programmers who code, maintain, and debug application support programs or subroutines written in S/390 assembler language.

Duration in Hours ⌚

32

Content Description

This course provides instruction and practice in the use of the more complex S/390 Assembler Language facilities for the experienced assembler language programmer. The course includes a discussion of standard linkage conventions, use of BSAM/QSAM and selected system macros, the macro definition language, and reentrant coding considerations.

Emphasis is placed on enhancing skills in problem resolution through analysis of more complex system-provided dumps.

Objectives

• Identify data management considerations and access methods
• Code assembler language programs which:
  • Conform to standard linkage conventions using save area chaining
  • Define and use BSAM/QSAM datasets through standard I/O macros
• Define and execute user macros which contain:
  • Positional and/or keyword parameters
  • Fixed or variable entry parameter lists
  • Conditional assembly logic
• Use variable length storage operations (that is, EX, MVCL, and so on)
• Employ more complex instructions (that is, TR, TRT, BXLE, and so on)
• Access JCL parameter data
• Employ LE date/time handling services
• Identify reentrant coding considerations and dynamic storage acquisition

Agenda

Day 1

• (00:15) Welcome
• (01:00) Unit 1: Review
• (00:15) Unit 2: Assembler instructions
• (01:45) Unit 3: Linkage
• (01:30) Unit 4: LE date/time handling
• (02:30) Exercise 1: PARM handling and search

Day 2

• (00:15) Lab review
• (03:00) Unit 5: Access methods: BSAM/QSAM
• (03:00) Exercise 2: File handling

Day 3

• (00:15) Lab review
• (00:30) Unit 6: Assembler compile-time options
• (00:30) Unit 7: SNAP dumps
• (03:30) Unit 8: Macros and the Conditional Assembly Language
• (02:30) Exercise 3: Macro modification

Day 4

• (00:25) Lab review
• (01:15) Unit 9: Miscellaneous instructions
• (00:25) Unit 10: Floating point data
• (00:25) Unit 11: Reentrant coding
• (00:15) Class wrap-up

Audience

This course is designed for application programmers and beginning system programmers who code, maintain, and debug application support programs or subroutines written in S/390 assembler language.

Skill Level

Advanced

Labs? 💻

Yes

Keywords

Assembler language;z\OS;zos;ES35G; ES35

Prerequisites

You should be able to:

• Code and debug simple S/390 assembler language programs

Enrollment

https://www.ibm.com/training/course/ES35G

Errata

None specified.

Follow-on Courses

None