IBM System/360 20 User Manual

The user may wish to copy a system tape
mainly for one of the following reasons:
1. to create an extra system tape, so that
the information on the currently used
system tape is not lost if the tape
becomes unusable;
2. to copy a 7-track system tape, which
cannot be usecl to control a system run,
onto a 9-track tape.
The IBM-supplied Copy System Tape
(CPSY~ program may be used to copy:
• a 9-track tape onto a 9-track tape,
• a 7-track tape onto a 9-track tape,
• a 9-track tape onto a 7-track tape,
• a 7-track tape onto a 7-track tape.
The CPSYS program is executed under con-
trol of the card-resident system. If it is
to be used, it must be contained in punched
cards.
I/O DEVICE ASSIGNMENTS
The following symbolic device addresses are
used when the CPSYS program is to be
executed.
SYSRDR -- Required. Refers to the card
reading device on which the Job
Control program (if required),
job control statements (if any) ,
and thE~ CPSYS program are read.
SYSIPT -- Required. Refers to the tape
drive on which the system tape
that is to be copied onto another
tape is mounted.
SYSOPT -- Required. Refers to the tape
drive on which the tape is
mounted that is to become a copy
of the system tape on SYSIPT.
SYSLOG -- Optional. Refers to the printer
on which job control statements
are listed.
CONTROL STATEMENTS
If a Job Control run is required (e.g., for
I/O device assignment), the following job
control statements must be issued to set up
the system for the execution of the CPSYS
program:
II JOB CPSYS
/1 EXEC
1he use of any other job control state-
ments depends on the job control functions
requested.
]Q!§: The CPTN control statement must not
be included in the job control statements
for the CPSIS program.
1he CPSYS program does not require pro-
gram control statements.
PREPARATION OF THE SYSTE~
The following steps must be taken to
execute the CPSYS program under control of
the card-resident system.
1. If the card Basic ~onitor program is
not yet in main storage, follow the
procedure described in the section 1~~
~Erd=R~§ident_~Y§!~~.
2. If a Job Control run is required, place
the following cards into the hopper of
the device assigned to SYSRDR:
~ phases 00, 01 and 02 of the Job Con-
trol program deck,
b) the cards containing the job control
statements, and
c) phase 03 of the Job Control program
deck.
3. Place the CPSYS program deck into the
hopper of the device assigned to SYSRDR
(immediately behind phase 02 of the Job
Control program deck). Press the Start
key of the device.
4. ~ount the system tape to be copied on
the tape drive assigned to SYSIPT;
press the Load-Rewind key and the Start
key of the drive.
5. Mount the reel of tape onto which the
system tape is to be copied on the tape
drive assigned to SYSOPT, press the
Load-Rewind key and the Start key of
the drive.
6. If the printer is to be used for list-
ing job control statements, press the
Reset key and the Start key of this
device.
54 System/360 !odel 20 ~PS Operating Procedures

IBM System/360 20 Specifications

General

Brand	IBM
Model	System/360 20
Category	Storage
Language	English