IBM GC28-6514-9 OS Assembler Rel21 Jan74 free download

File name GC28-6514-9_OS_Assembler_Rel21_Jan74.pdf

File No. 8360-21 Order No. GC28-6514-9 Systems Reference Library OS Assembler Language OS Release 21 This publication contains specifications for the ~BM System/360 Operating System Assembler Language (Leyels E and F) . The assembler language is a symbolic programming language used to write programs for the IBM System/360. The language pro- vides a convenient means for representing the machine instructions and related data necessary to program the IBM System/360. The IBM Systelt1/360 Operating System Assem- bler Program processes the language and provides auxiliary functions useful in the preparation and documentation of a program, and includes facilities for processing the assembler macro language. Part I of this publication describes the assembler language. Part II of this publication describes an extension of the assembler language -- the macro language used to define macro instructions. PREFACE This publication is a reference manual operations are discussed in the publication for the programmer using the assembler IBM System/360 Principles of Operation, language and its features. Order No. GA22-682l. The IBM System/370 machine operations are discussed in the Part I of this publication presents publication IBM System/370 Principles of information common to all parts of the Operation, Order No. GA22-7000. Information language followed by specific information on program assembling, linkage editing, concerning the symbolic machine instruction executing, interpreting listings, and codes and the assembler program functions assembler programming considerations is provided for t:he programmer I s use. Part II provided in OS Assembler (F} Programmer's contains a description of the macro lan- Guide, Order No. GC26-3756. guage and procedures for its use. Appendixes A through J follow Part II. Appendixes A through F are associated with Parts I and II and present such items as a The following publications are referred to in this publication: summary chart for constants, instruction listings, character set representations, OS Introduction, Order No. GC28-6534 and other aids to programming. Appendix G contains macro language summary charts, and Appendix H is a sample program. Appendix I