IRP              Assemble once for each parameter             Macro Directive

  IRP dummy_argument, argument_list
  macro_body
  ENDM

    Causes the assembler to assemble macro_body once for each element in
    argument_list.

    dummy_argument is the dummy argument used in the macro body.

    argument_list consists of a list of arguments separated by commas. The
    arguments can be any text, such as symbols, strings, numbers. You must
    always surround argument_list with angle brackets (< >).

    Examples:   IRP reg,<ax,bx,cx,dx>
                   push reg
                ENDM

                IRP num,<0,1,2,5,6>
                   chr&num db 0ffh
                ENDM

                BCDops equ <DAA,DAS,AAA,AAS>
                % IRP op,BCDops
                      proc op&_
                           op
                           ret
                      endp
                  ENDM

                % IRP op,BCDops
                      IRP cf_,<0,1>
                      IRP af_,<0,1>
                      label op&test&&cf_&&&af_ byte  ; DAAtest00 etc.
                      dw    af_ shl 4 OR cf_ shl 0
                      dw    offset op&_
                      db    "&op : AL before and after ",0
                      ENDM
                      ENDM
                  ENDM