Expressions that can be used for SHOWCAT

The values for an operand of SHOWCAT can be expressed as follows:

An absolute numeric expression.
A code or a list of codes separated by commas and enclosed in parentheses.
A register (in parentheses) from 2 through 12 that contains an address or numeric value. In the execute form of a macro, you can use register 1 for the address of the parameter list. Equated labels can be used to designate a register; for example, BFRNO=(BFR#), where the equate statement, BFR# EQU 3, is included in the program.
An expression valid for a relocatable A-type address constant; for example, AREA=RETURN+4.

The expressions that can be used depend on the operand. Only absolute numeric expressions, codes, registers, and relocatable A-type address constants are valid for the list form of a macro.

Table 1 shows the expressions allowed for each operand of SHOWCAT.

Table 1. Operand expressions for the SHOWCAT macro. Operand expressions for the SHOWCAT macro
Operands	Code	Register	A-type address
SHOWCAT (STANDARD): ACB AREA CI NAME		X X X X	X X X X
SHOWCAT (LIST): ACB AREA CI MF NAME	X		X X X X
SHOWCAT (EXECUTE): ACB AREA CI MF B E address NAME	X X	X X X X X