IBM OS Assembler Language

Using a real-world, practical approach to the material, the third volume in this series covers subroutines, subprograms, macros and tables. Like its predecessors in this series, this self-teaching guide has a programmed-instruction format with objectives, exercises, reviews and applications questions. The book provides important information on coding generalized subroutines, passing data to generalized subroutines, copying source codes, assembling and linking subprograms, defining macros, controlling macro expansions, using an index register, programming for the sorted loading routine etc..