z/OS Assembler Programming, Part 3: z/Architecture and z/OS

Description

The focus is on the changes introduced with z/Architecture machines and later z/OS Assembler language features, macro changes; 64-bit arithmetic; AMODE 64 considerations; working with ASCII and Unicode data; additional hardware instructions (over 500 instructions are covered); structure of the 64-bit address space; linkage conventions and save areas.

At the end of his course, students will be able to:

• Describe the major architectural changes introduced with the z/Architecture
• class of mainframes
• Write Assembler programs that use the new instructions, particularly
  • Long displacement instructions
  • Relative branch instructions
  • Instructions to set and test current addressing mode
  • Instructions to load all or parts of 64-bit registers, and to shift and rotate bits within registers
  • Instructions to perform 64-bit binary arithmetic
  • Instruction to test packed decimal data for validity
  • New instructions that can set and test bits in storage or registers
• Work with files encoded in EBCDIC, ASCII, or Unicode
• Code, assemble, bind, and run programs that run AMODE64
• Use new features of DROP, EQU, ORG, and CNOP 

Audience

Programmers needing to understand and use the new hardware and software services to support 64-bit addressing.