Language Processors
An Interpreter is

a program that automate the translation of assembly language into machine language
a program that places programs into memory and prepares them for execution
is a program that appears to execute a source program as if it were machine language
program that accepts a program written in a high level language and produces an object program

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Language Processors
In analyzing the compilation of PL/I program, the term "Syntax analysis" is associated with

use of macro processor to produce more optimal assembly code
recognition of basic elements and creation of uniform symbols
creation of more optional matrix
recognition of basic syntactic constructs through reductions

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

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

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Language Processors
The system/370 assembler language

is a term that refers to the control programs of an operating system
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 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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