OS/390 Assembler Language: Classic - Topical Outline

Day One

Fundamentals
   Programming concepts
   Source, Object, and Load Modules
   Memory and Data Representation
   Addressing
   The CPU
   Computer Exercise: Setting Up For Programming

   Machine Instruction Formats
   Base / Displacement Addresses
   Assembler Language and the High Level Assembler (HLASM)
   Basic Program Structure Requirements
   Computer Exercise: Coding, Assembling, Linking, Running

Data Description, Moving Data, Record Processing
   Defining Constants and Work Areas (DS and DC Statements for
         Character Type Data)
   MVC instruction
   Instruction Styles and Formats
   Introduction to Branching
   Introduction to Record Processing
   Data Organization
   DCB Macros
   OPEN, GET, PUT, CLOSE Macros
   Record Processing - An Example
   Computer Exercise: File To File Program

Compares, Branches, and Linkages
   Record Layouts
   Programming Techniques: MVC
   CLC Instruction and the Condition Code
   BC, BCR Instructions
   Extended mnemonics
   BAS, BASR, BAL, BALR, IPM Instructions

Day Two

   More on Addressability
   What Can Go Wrong?
   Storage Protect Keys
   Computer Exercise: List Fields From A Record

Packed Decimal Arithmetic
   Zoned Decimal Format
   Packed Decimal Format
   DC and DS for Zoned and Packed Type Data
   Packed Decimal Instruction Set: PACK, UNPK, AP, SP, MP, DP, CP, ZAP
   Arithmetic Concerns
       Significant digits
       Keeping Track of Decimal Points
   Computer Exercise: Packed Decimal Calculations

More Assembler and Arithmetic Concepts
   Redefining Storage
   Creating Data Structures
   The Assembly Listing Components
   Introduction to Debugging
   Rounding
   MVO - Move With Offset
   SRP - Shift and Round Packed
   Computer Exercise: Half-Adjusting Data

Day Three

Editing Packed Decimal Fields
   DS / DC for Hexadecimal Data
   "ED" Instruction
   Edit Patterns
   Computer Exercise: Edit Packed Decimal Data

A Deeper Look at Instruction Formats
   DC / DS for Binary Data Type
   Addresses in Instructions
   Explicit Coding - Review
   Tables
   LA Instruction
   Instruction Formats (SS, RR, RX)
   MVI, CLI Instructions
   Instruction Formats (SI)
   MVN, MVZ Instructions
   Computer Exercise: Using Immediate Instructions

Binary Integer Data
   Binary Integer Data Formats
   Twos Complement
   DC/DS for Fullword, Halfword, and Doubleword Binary Data
   Boundary Alignment
   CVB, CVD Instructions
   L, LR, ST Instructions
   A, AR, S, SR, C, CR, MR, M, DR, D Instructions
   Concerns Of Working With Binary Integers
   Working With Binary Numbers - An Example
      Computer Exercise: Binary Arithmetic Computations

Day Four

More Binary Instructions
   Compare Instructions
   LPR, LNR, LCR Instructions
   "Logical Arithmetic": AL, ALR, CL, CLR, SL, SLR
   Halfword Instructions: AH, CH, LH, MH, SH, STH

EDMK
   EDMK and floating dollar signs
   Computer Exercise: Floating Dollar Sign

Loops and Tables
   Literals
   LTORG
   Address Constants
   EQU - Equate Symbol
   Loop Control
   Tables
   BCT, BCTR, BXLE, BXH, IC, STC
   Computer Exercise: Table Processing

Day Five

Multiple base registers, DSECTS, ORG
   STM, LM
   Multiple Base Registers
   CNOP
   Dummy sections - DSECTs
   ORG
   Computer Exercise: Using DSECTs

Working With Bits
    O, OC, OR, OI, N, NC, NR, NI, X, XC, XR, XI
    Sorting Tables
    LTR, TM Instructions
    More on EQU
    Computer Exercise: Sorting a Table

Shift Instructions
    SRL, SRA, SLL, SLA, SRDL, SRDA, SLDL, SLDA Instructions
    Code Fragment: Display Bit String

Translate
    Instruction Set: TR
    Code Fragment: Display Hex String
    Code Fragment: Direct Access to a Table
    Computer Exercise: Build a Table Dynamically

TRT and EX
    TRT - Translate and Test
    EX - Execute
    TRT and EX

Strings
    String Handling
    ICM, CLM, STCM Instructions
    MVCL, CLCL Instructions
    MVCIN Instruction

Setting Addressing Mode
    Addressing Mode
    AMODE and RMODE
    BASSM - Branch And Save And Set Mode
    BSM - Branch and Set Mode

Course information: C410 / 5 Days         These Materials © Copyright 2006 by Steven H. Comstock      V13.x

Course Objectives
Course Description
Home page

this page last updated: 12 September, 2006
this page copyright © 2006 by The Trainer's Friend, Inc.