IBM System/360 20 User Manual

If the user wishes to use any macro
instructions other than those provided by
IBM in his source program, he writes his
own macro definitions and includes them in
the macro library of his tape-resident
system.
Macro definitions that are to be
included in the macro library can be con-
tained either in punched cards or on mag-
netic tape in card-image format.
Any macro defini tions that are contained
in the macro library but are no longer
required by the user can be deleted from
the library.
The Macro Maintenance (MMAINT) program
provides for the inclusion of IBM-supplied
and user-written macro definitions in the
macro library and for the deletion of macro
definitions that are no longer required.
This program must be included in the pro-
gram library of the user's tape-resident
system if the latter is to contain a macro
library. The operating procedures for
adding user-written macro definitions to,
or deleting macro definitions from the
macro library, by means of the MMAINT pro-
gram, are described in the sections that
follow. The procedure for inserting IBM-
supplied macros into a macro library is
detailed in the section Inserting IBM-
~.!!E.E.! i e .L11.s:.ff:Q2_::tlL t h ~l1~~£Q_ L i 1:11;: a r.1.
I/O DEVICE ASSIGNMENTS
The following symbolic device addresses are
used in preparin9 and performing the execu-
tion of the MMAINT program:
SYSRES -- Required. Assigned at IPL time.
Refers to the 9-track tape drive
on which the system tape is
mounted.
SYSRDR -- Required. Refers to the card
reading device on which job con-
trol statements and MMAINT con-
trol statements are read.
SYSIPT -- Required if macro definitions are
to be included in the library.
Refers to the card reading device
or tape drive on which the macro
definitions are read.
SYSOPT -- Required. Refers to the tape
drive on which the new system
tape (with the updated macro
library) is created.
5Y5000 -- Required. Refers to the tape
drive on which a work tape is
mounted.
SYSLST -- Optional. Refers to the printer
on which the macro definitions
that are to be included in the
library are listed. The printer
is also used to list diagnostic
and information messages.
SYSIOG -- Optional. Refers to the printer
on which control statements are
listed.
]g!g: SYSR[R and SYSIPT may be assign~d
the same card reading device.
ceNTRaL STATE~ENTS
The following job control statements are
used to set up the system for the execution
of the MMAINT program.
II JOB MMAINT
II ASSGN
II CONFG
II EXEC
Required.
Required for any sym-
bolic address whose
device assignment in
core storage is to be
changed.
Required if more than
8K bltes of main
storage are available
and if the configura-
tion has not already
been spEcified in this
run. (Allows faste r
processing) •
Required.
Any other jot control statements need be
issued only if the corresponding functions
are to be requested.
Note: The OPTN control statement must not
be-Included in the job control statements
for the MMAINT program.
The MMAINT program requires the following
control statements:
1/ FRIOR n
/1 CA'1AL
/1 DELET macro
or
1/ DELET ALL
Required. Must precede
each set of DELET andl
or CATAL statements
referring to one
priority section.
Required for each macro
definition to be
included in the macro
library.
Required for deleting
one macro definition
(or all macro defini-
tions) contained in a
priority section.
56 System/360 Model 20 TPS Operating Procedures

IBM System/360 20 Specifications

General

Brand	IBM
Model	System/360 20
Category	Storage
Language	English