This course introduces students to the basic skills required to write assembler programs using the IBM High Level Assembler (HLASM).
Students will code Assembler programs with the following capabilities -
- Use Character, packed and binary data instructions
- Edit input data and build output reports
- Processing data in tables
- Build program linkage
- Code data management macros
- Use dumps to debug Assembler language program S0C7 abends
- Developing larger programs using multiple base registers
- Creating and using DSECTs.
Students will code, assemble and execute a series of programs using fixed point and decimal instructions and file access
Learning Objectives
Upon completion of the course, the students will be able to write High Level Assembler programs that -
- read and write disk/tape files, and generate formatted reports
- Edit input data
- Process data in 2 dimensional tables
- Code program linkage conventions
- Debug Assembler language programs using dumps
- Developing large programs using multiple base registers
- Creating and using DSECTs.
Mainframe Training Audience
This course is for application and systems programmers who need to develop programs using the IBM's High Level Assembler.
Mainframe Training Prerequisites
Each attendee should have at least 6 months of experience with TSO/ISPF and JCL.
Previous experience in designing and coding application programs will be helpful, but is not needed.
Mainframe Training Course duration
5 days
Mainframe Training Course outline
DAY 1
- 1. What is Assembler Language?
- 2. Defining Storage Areas and Constants
- 3. Packed Decimal Processing
Day 2
- 4. Data Movement Instructions
- 5. Assembling and Executing Your Program
- Lab 1 - Convert F to C degrees - using IBM standard Procs
- 6. Conditional Processing
- Lab 2 - Conditional Processing
Day 3
- 7. Formatting Output Data
- Lab 3 - Suppress leading zeros
- 8. Binary Processing
- Lab 4 - Convert F to C degrees in binary
- 9. Table Processing
- Lab 5 - Table look-up (DS's & DC's)
Day 4
- 10. Program Linkage
- 11. Sequential File Processing
- Lab 6 / Lab 7 - Load a table (DS's only) from a sequential file
Day 5
- 12. Program Addressability and DSECTs
- Lab 8 - Program Addressability - Table layout and build DSECT
- 13. What to Know Before You Go
Appendices
- Appendix A - Analyzing Abend-AID Dumps
- Appendix B - Analyzing DumpMaster Dumps
- Appendix C - Using the IBM Fault Analyzer
- Appendix D - Analyzing IBM SYSUDUMPs
- Appendix E - Binary and Hexadecimal Number Systems
- Appendix F - Solutions to Written Exercises
- Appendix G - Solutions to Lab Exercises
