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Considerations for Assembler Programs in a DC/UCF Online System

Certain coding conventions should be observed in Assembler programs which are to be used in a DC/UCF online system both for stand-alone programs and programs which are to be called from another online program. This chapter will discuss the following topics:

Defining an assembler program which uses standard IBM calling conventions

This section contains the following topics:

SVC Instructions in an Online Program

Making Your Assembler Program Reentrant

Methods of Calling an Online Assembler Subprogram

Standard IBM calling conventions