Advanced Assembler Language Coding Workshop

Day 1 Welcome Unit 1: Review Unit 2: Assembler instructions Unit 3: Linkage Unit 4: LE date/time handling Exercise 1: PARM handling and search Day 2 Lab review Unit 5: Access methods: BSAM/QSAM Exercise 2: File handling Day 3 Lab review Unit 6: Assembler compile-time options Unit 7: SNAP dumps Unit 8: Macros and the Conditional Assembly Language Exercise 3: Macro modification Day 4 Lab review Unit 9: Miscellaneous instructions Unit 10: Floating point data Unit 11: Reentrant coding Class wrap-up

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. Objective - 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

You should be able to: Code and debug simple S/390 assembler language programs