Page 100 - DCAP507_SYSTEM_SOFTWARE

System Software

Notes

Task What does macro name and parameters define?

Macro Invocation

 A macro invocation statement (a macro call) provides the name of the macroinstruction
being summoned and the arguments in mounting the macro.
 The processes of macro invocation and subroutine call are pretty different.
 Statements of the macro body are expanded every time the macro is invoked.

 Statements of the subroutine emerge only one; regardless of how many times the
subroutine is called.

Notes The macro invocation statements considered as comments and the statements
produced from macro expansion will be assembled as although they had been written by
the programmer.

Macro Expansion

 Each macro invocation statement will be expanded into the statements that produces the
body of the macro.

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