as: Irp
7.49 '.irp SYMBOL,VALUES'...
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Evaluate a sequence of statements assigning different values to SYMBOL.
The sequence of statements starts at the '.irp' directive, and is
terminated by an '.endr' directive. For each VALUE, SYMBOL is set to
VALUE, and the sequence of statements is assembled. If no VALUE is
listed, the sequence of statements is assembled once, with SYMBOL set to
the null string. To refer to SYMBOL within the sequence of statements,
use \SYMBOL.
For example, assembling
.irp param,1,2,3
move d\param,sp@-
.endr
is equivalent to assembling
move d1,sp@-
move d2,sp@-
move d3,sp@-
For some caveats with the spelling of SYMBOL, see also Macro.