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Chapter 11   Writing Macro Control Statements

220  irp

11.9 irp

Syntax

irp

dummy_parameter, parameter (, parameter) ...

block

endm

NOTE:

Up to10 dummy parameters can be specified.

Functional description

The irp directive repeatedly expands the specified block the specified number of times. The dummy 

parameter is used within the block. The macro expansion replaces the dummy parameter with each 

parameter in turn, repeated for the number of parameters.

Coding rules

Symbols cannot be used within a block. If used, a double definition error will occur. The local directive 

cannot be used either.

If a comma (,) delimiters in a row are specified, the corresponding parameter will be processed as 

though a null character had been specified.

To specify strings that include commas and spaces, use the macro operator <>.

Usage example

In the following example, the irp directive is in a macro definition that is used twice in the program.

init

macro

p1

irp

opr, <pl\& 0x0f>

mov

opr, D0

endm

endm

;

_TEXT

section

CODE, PUBLIC, 1

init

1

irp

reg, D2, D3

mov

0, reg

endm