Assembler Language Coding Workshop – ES34G CR

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Details


Course Code: ES34G

Brand: IBM Z – Mainframe

Category: Systems

Skill Level: Intermediate

Duration: 40.0H

Modality: CR

 

 

Audience


This intermediate course is for application programmers and/or beginning system programmers who code, maintain and/or debug application support programs or subroutines written in S/370 or S/390 Assembler Language.

 

Prerequisites


This classroom hands-on lab course provides an introduction to the mainframe Assembler language. The course is designed to develop the skills appropriate to write and/or maintain programs and routines written in S/370 or S/390 Assembler Language. Emphasis is placed on enhancing skills in problem resolution through program check interruption analysis and dump reading.

 

Short Summary


This intermediate course is for application programmers and/or beginning system programmers who code, maintain and/or debug application support programs or subroutines written in S/370 or S/390…

 

Overview


This classroom hands-on lab course provides an introduction to the mainframe Assembler language. The course is designed to develop the skills appropriate to write and/or maintain programs and routines written in S/370 or S/390 Assembler Language. Emphasis is placed on enhancing skills in problem resolution through program check interruption analysis and dump reading.

 

Topic


Day 1

  • Welcome
  • Unit 1 – Numbering systems
  • Unit 2 – Mainframe architecture
  • Unit 3 – Assembler syntax
  • Overview of instructions: LA, LR, LTR, MVC, DS, DC
  • Exercise 1 – 80/80 listing
  • Exercise 1A – 80/80 listing

Day 2

  • Exercise 1 review
  • Unit 4 – Data definition statements
  • Unit 5 – Fixed-point binary instructions
  • Exercise 2 – Binary data

Day 3

  • Exercise 2 review
  • Unit 6 – Addressing, comparing, and branching
  • Unit 7 – Data movement instructions
  • Exercise 3 – Text handling

Day 4

  • Exercise 3 review
  • Unit 8 – Assembler pseudo instructions
  • Unit 9 – Reading dumps
  • Unit 10 – Packed decimal processing
  • Exercise 4 – Packed data/editing

Day 5

  • Exercise 4 review
  • Unit 11 – Miscellaneous instructions
  • Course wrap-up

 

Objectives


  • Recognize architectural features, such as instruction formats, data representation, storage addressing, and so on, which are significant to program analysis
  • Identify point of program interruption, using the formatted system dump and elements of information such as the Program S
    tatus Word (PSW), the Instruction Length Code (ILC), the program's base register(s), and so on
  • Identify appropriate standards for assembler programs in terms of program organization, register conventions, coding practices, documentation, and so on
  • Code and debug assembler language programs which:
  • Conform to standard linkage conventions using save area chaining
  • Define and use various types of data definitions, including fixed point binary, character, hexadecimal, and packed decimal
  • Employ standard macros such as CALL, SAVE, RETURN
  • Use various Assembler Language statements such as CSECT, EQU, COPY, END
  • Use both symbolic and explicit notational forms for instructions
  • Use data literals appropriately, and explain the use of LTORG to direct positioning of the literal pool
  • Create and use appropriate patterns for EDIT instructions
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