Programming ISOC for TPF

Overview
This course is designed to give Application Development staff a practical introduction to applying the C Programming language (ISOC) in the TPF Environment. It is a practical 5 day course with lectures, interspersed with exercises to consolidate the knowledge gained.

Pre-Requisites
Prior Mainframe Assembler and TPF knowledge is required. Students should have attended the 5 day C Programming class or have prior commercial experience of C programming.

Audience
Programmers who are required to program in TPF using the ISOC programming language.

Student Numbers
The maximum recommended student to instructor ratio is 12:1

Objectives
On completion of the syllabus students will be able, with the aid of course notes, to:

· Access the ECB in an ISOC Environment.
· Write C Headers to map existing Dsects.
· Interpret ISOC Listings.
· Use TPF API functions in C programs
· Interface with existing Assembler programs.
· Analyse ISOC dumps to interpret C code and storage areas.

Course Outline

 

Introduction		Objectives Terminology The DLM
The ECB		Overview What happened to R9? Using ecbptr()
The Pre Processor		Using #pragma options Writing and using macros Conditional Compilations
Header Files		Standard TPF Header Files Converting a DSect to a Header File _Packed vs #Pragma Pack Pitfalls
Listings		Review The Pseudo Assembler Optimised Code
Functions		Prolog Epilog Efficient storage usage
Assembler Programs		Interface TPF_regs structure 24 bit vs 31 bit
Existing APIs		Program management Input/Output Working storage File handling Globals Error handling File Pool Management
Program Interfaces		C to C C to Assembler Assembler to C Parameter List
Introduction to Dump Analysis		ISOC Register Conventions Module Map Identifying variables, parameters and static storage