Language Processors
The macro processor must perform

expand macro calls and substitute arguments
All of these
save the macro definitions
recognize macro definitions and macro calls

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Language Processors
The system/370 assembler language

allows multiple programs to reside in separate areas of core at the same time
allows the programmer to write base registers and displacements explicitly in the source program
is a term that refers to the control programs of an operating system
is used to remember which of the general-purpose registers are currently available as base registers, and what base addresses they contain

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Language Processors
The advantage(s) of incorporating the macro processor into pass 1 is/ are:

Functions are combined and it is not necessary to create intermediate files as output from the macro processor and input to the assembler
more flexibility is available to the programmer in which he/she may use all the features of the assembler in conjunction with macros
All of these
many functions do not have to be implemented twice

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