OS/390 Assembler Language: Advanced Topics.

This course covers various topics related to High Level Assembler. It may also cover general advanced programming topics, such as multi-processing, multi-tasking, and design of parallel processes. Topics to be included in the course are selected with the customer.

The course is intended for:

Experienced Assembler programmers needing to brush up on their skills.
Assembler programmers needing to learn systems programming techniques.

This overview comes in three parts, which are presented in sequence below:

Course Description
Course Objectives
Topical Outline

Course Description

Recommended Duration: Varies

Benefits: Varies with topics chosen for the course.

Audience: Anyone who wants to expand his/her knowledge in certain HLASM-related areas.

Prerequisites: At the very least the student entering this course should have some HLASM programming experience.

Related IBM Materials. Access to the following IBM manuals in the classroom is advised (via hardcopy, BookManager, etc.):

SA22-7201 - Principles of Operation
Macro Reference manuals relating to the selected topics

Major Topics Include:

Various topics chosen from our previous set of courses.
Other topics of your choice may be added.

Exercises: Exercises will be included as appropriate.

Note 1:
This course may be drawn from the set of courses we used to teach before the current set was established and/or other resources. Topics may be added at will.

Note 2:
All course material is in American English. Oral explanation will be in English by default, but is also available in Dutch, German, and/or French.

Course Objectives

On successful completion of this course, the student, with the aid of the appropriate reference materials, should be able to:

Understand the topics included in the course. Details can be determined cooperatively, during or after selection of topics to be included.

Topical Outline

Varies with topics selected.
Some suggestions are:

Reusability

Reusable coding techniques
Reenterable coding techniques
Refreshable coding techniques

Virtual Storage

Dynamic Address Translation
Paging
Swapping
Addressing Modes: primary, secondary, AR, home
Amode, Rmode, Cross Memory Mode
Address spaces
Private spaces
Data spaces

Optimization

Locality of reference
Paging
Caching
I-cache and D-cache
Path length considerations
In-line versus out-of-line exception handling

Calling Mechanisms

Save Area Chaining
Linkage Stack
F1SA pointer

Instruction Set

Privileged Instructions
Semi-privileged Instructions
Floating Point Instructions

Multi-tasking

Synchronization
Serialization
Semaphores and ECBs
Lock-out and Deadlock
Dispatching

Units of Work

Task mode
SRB mode
Authorization
SVC mode
PC calls

Multi-processing

Tightly coupled (LPAR/MONOPLEX)
Loosely coupled (SYSPLEX)

Error handling

SPIE and ESPIE routines
STAE and ESTAE routines
Related macros

Authorized macros

Dozens of subtopics

Special Routines

Interrupts and asynchronous routines
SRB routines
SVC routines
PC routines

Serialization

Locks
ENQueueing and DEQueueing
Latches
Private serialization schemes
Lockwords and ECBs

Some Control Blocks

PSA
CVT
ASVT
ASCB
TCB
SRB
RB
UCB

Other topics

Of your own choosing or from our previous set of courses

Remarks? Questions? More information? Select the topic of your choice or e-mail us with your questions.

To the Course Description
To the Course Objectives
To the Topical Outline

Topics available
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