C414: z/OS Assembler: Basic Interfaces; Topical Outline

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z/OS Assembler: Basic Interfaces - Topical Outline

Day One

Program linkages
    Control Sections
    Save Areas
    Addressability
    Return Codes
    Typical Linkages
    SAVE and RETURN macros
    Getting the PARM value from EXEC statement

Working with files
    Data set organizations and access methods
    DCB Macros
    OPEN, GET, PUT, CLOSE
    Error handling: SYNAD routines
    ABEND macro
    Computer Exercise: Basic Program Linkages and QSAM Files

Subroutines and the Program Binder
    CSECTs and the Program Binder
    Assemble, Bind, and Run Data Flow
    Anatomy of an Assembly Listing
    Assembler PARMs
    Subroutines: the CALL macro
    Object Modules and Load Modules
    Program Binder control statements and PARMs
    Managing Print Files
    Computer Exercise: Subroutine Linkages

Day Two

Program Binder and Maintenance
    Impact of Changes to a Subroutine
    Additional Program Binder Control Statements
    Program Binder Processing
    Computer Exercise: The Program Binder and Maintenance

Debugging and Dump Reading
   Computer Exercise: ONION
    Guidelines for Debugging
    Program Termination
    IBM Publications
    Quick Reference
    File Related Messages
    Common System Completion Codes
    z/OS Structure
    Essential Control Blocks
    Dump Reading
    Debugging: The Larger Context

Some System Services
    WTO - Write To Operator
    SNAP - Take a Snapshot Dump
    TIME - Get the Date and Time
    STCKCONV - Convert a STCK value to Date and Time Format
    CONVTOD - Convert a Date and Time value to TOD Format

Variable Length Records
    Defining
    Processing
   Computer Exercise: Variable Length Records

Day Three

QSAM Locate Mode
GET and PUT using locate mode
Update-in-place: PUTX

31-Bit Addressability Considerations

Dynamic Linkages
    Static Linkages
    Dynamic Linkages
    Module Attributes
    The Search for Modules
    LOAD
    DELETE
    LINK
    Reusable and Reenterable programs
   Computer Exercise: Dynamic Serial Linkages

XCTL and Storage Management
    XCTL - an introduction
    GETMAIN / FREEMAIN
    Subpools
    XCTL Resumed
   Computer Exercise: Using XCTL

Writing Reentrant Programs
    Writing Reentrant Programs
    Reentrant Save Area Chaining
    Reentrant I/O
    Reentrant Processing
    Sample Reentrant Program
    Computer Exercise: Making a Program Reentrant

I/O and Amode 31
    AMODE 31 I/O Issues
    AMODE 31, RMODE 24
    AMODE 31, RMODE ANY

Course Objectives
Course Description
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