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IBM System/360 20 User Manual

IBM System/360 20
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In
addition
to
the
initial
system
tape,
which
is
built
from
IBM-supplied
programs
exclusively,
the
user
may
build
other
sys-
tem
tapes
that
are
tailored
to
his
require-
ments.
He
builds
these
additional
systems
from
his
own
object
programs
and
from
IBM-
supplied
programs.
Additional
system
tapes
are
built
by
means
of
the
Load
System
Tape
program,
which
must
be
contained
in
punched
cards
and
executed
under
control
of
the
card-resident
system.
Each
system
tape,
regardress
of
whether
it
is
built
from
IBH-
supplied
programs
only
or
from
a
combina-
tion
of
IEM-supplied
and
user-written
pro-
grams,
must
include
the
tape
Basic
Monitor
program
and
a
program
library
containing
the
tape
Job
Control
program.
The
programs
or
program
phases
to
be
included
in
a
tape-resident
system
(i.e.,
the
input
to
the
Load
System
program)
can
be
either
contained
in
punched
cards
or
stored
on
magnetic
tape
in
card-image
for-
mat.
Program
decks
of
IBM-supplied
pro-
grams
that
are
to
be
included
in
the
system
are
obtained
from
the
tape
supplied
by
IBM
by
means
of
the
Distribution-Package
Re-
trieval
program.
The
user's
object
pro-
grams
are
obtained
as
punched
output
from
one
of
the
following:
1.
The
TPS
Report
Program
Generator.
2.
The
TPS
Assembler
program
{if
object
programs
do
not
require
linking
and/or
relocation}
•
3.
The
TPS
Linkage
Editor
program
(if
linking
and/or
relocation
of
assembled
object
programs
was
require~
•
4.
The
TPS
Core-Image
Service
program.
The
tape
Basic
f-onitor
program
must
be
the
first
program
on
every
system
tape.
The
programs
or
program
phases
to
be
included
in
the
program
library
of
a
system
tape
must
be
arranged
as
follows:
1.
Job
Control
program.
2.
Other
IBM-supplied
and
user-written
programs
in
alphabetical
order
by
pro-
gram
(phase)
names.
CONTROL
STATEMENTS
If
a
Job
Control
run
is
required,
the
fol-
lowing
job
control
statements
must
be
issued
to
the
card
Job
Control
program
to
set
up
the
system
for
the
loading
and
execution
of
the
Load
System
Tape
program:
//
JOB LDSYS
//
EXEC
The
use
of
any
other
job
control
cards
depends
on
the
Job
Control
functions
required
(e.g.,
the
listing
of
control
statements
or
I/C
device
assignments)
•
Note:
The
CPTN
control
statement
must
not
be-Included
in
the
job
control
statements
for
the
LDS1S
program.
The
following
control
statements
are
required
to
supply
information
to
the
Load
System
Tape
program:
//
HCNTR
/1
END
/1
LCADe
/1
END
1he
cards
containing
these
control
statements
are
normally
supplied
by
the
programmer.
The
operator
must
ensure
that
they
are
present
and
that
they
are
located
in
the
proper
place.
If
the
input
to
the
Load
System
Tape
program
is
on
tape,
the
LCADC
control
statement
and
the
second
ENt
control
statement
must
also
be
stored
on
the
input
tape,
in
card-image
format
(see
Figure
14).
I/O
DEVICE ASSIGNMENTS
The
following
symbolic
I/O
device
addresses
are
used
in
preparing
and
performing
the
execution
of
the
LDSYS
program:
SYSRDR
--
Required.
Refers
to
the
card
reading
device
for
reading:
1.
the
Job
Control
program
(if
required)
,
2.
job
control
statements
(if
any)
,
3.
the
Load
System
Tape
program,
4.
the
MONTR
control
statement,
5.
any
ASSGN
and/or
CONFG
control
statements
used
to
insert
or
change
standard
assignments
and/or
change
the
storage
capa-
city
specification
in
the
tape
Basic
Monitor
program,
and
68
System/360
Model
20
TPS
Operating
Procedures

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IBM System/360 20 Specifications

General IconGeneral
BrandIBM
ModelSystem/360 20
CategoryStorage
LanguageEnglish

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