SUMMARY:   Suitable for the BCS Mainframe Technology professional Exams for levels 1 and 2 Developer and Level 2 Engineer (z/OS) AUDIENCE:   Systems Programmers, Technical Support and Applications Programmers who need the ability to write and debug Assembler language programs and understand better the software that their installation uses. PREREQUISITES:   Delegates are expected to have some knowledge of the organisation and operation of zSeries Enterprise Servers. Some previous programming experience is necessary and knowledge of hexadecimal arithmetic would also be useful. DURATION:   4 days. Hands on. FOLLOW ON:   Assembler Part 2 OBJECTIVES:   The objectives of this course are to: Develop a better understanding of the machine and how it processes instructions. Develop the ability to read, maintain and write assembler programs, particularly those small functions which will increase corporate IT throughput. Provide delegates with a practical introduction to the essential operating system interfaces with Assembler. Improve skills in Diagnostics and dump analysis. COURSE CONTENT:   Control Section Source Code Definitions: Object Modules and Load Modules Control Section Definitions · START Command Definition · CSECT Command Definition Setting up Addressability in a Control Section USING Statement BASR Instruction (Branch and Save Register) Multiple Base Register Specifications MVC Move Character Instruction LA Load Address Instruction Symbolic Address Base Addressing Displacement Calculations Index Addressability MVI Move Immediate · LITERALS · EQUATES Data Definitions Define Constant · Binary · Characters · Hexadecimal · Fixed Point · Define Storage · Addressing Operand subfields, length attributes, Constant alignment, padding, types, duplication factor expressions, Bit length modifier, Y CONST, A CONS, V CONS Instruction Set CLC Compare Logical Character B  Branch Instruction Format CLI  Compare Logical Integer STM Storage Multiple IC  Insert Character STC Store Character L  Load LH  Load Halfword LR  Load Register SH  Subtract Halfword ST  Store LTR Load and Test DSECT Dummy Section · How to define a Dummy Section. · What a Dummy Section is. · How to use a Dummy Section. Workshop: Read Card Input Until Last Card, then Output Cards Instruction Set (continued) MVS I/O needs DOS I/O needs C  Compare Function CH  Compare Halfword CR  Compare Register BCT Branch on Count BCTR Branch on Count Register BAL Branch and Link Binary Conversion PACK Pack CVB Convert to Binary CVD Convert to Decimal UNPK Unpack   Binary Arithmetic AR  Add Register A  Add Instruction AH  Add Halfword SR  Subtract Register SH  Subtract Halfword MH  Multiply Halfword M  Multiply D  Divide DR  Divide Register Workshop: Sort Data Using A Bubble Sort Decimal Arithmetic AP  Add Decimal CP  Compare Decimal DP  Divide Decimal ED  Edit EDMK Edit and Mark MP  Multiply Decimal SRP Shift and Round Decimal SP  Subtract Decimal ZAP Zero and Add Workshop: Binary Arithmetic Linkage Instructions BAS/BASR Branch and Save Register Workshop: Packed Arithmetic