EasyManuals Logo

IBM System/360 20 User Manual

IBM System/360 20
178 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #171 background imageLoading...
Page #171 background image
~y§te:!!L.I~£~:
The
reel
of
magnetic
tape
on
which
the
user's
tape-~esident
system
is
located.
Ta~ror
S!ati.§!ics:
An
optional
function
of
the
(Basic)
Monitor
that
collects
and
lists
tape
operating
characteristics.
.I~~_1~£~1§:
Special
records
at
the
beginning
and
end
of
tape
files.
There
are
volume,
header,
and
trailer
labels.
They
are
used
to
identify
the
reel
of
tape
and
the
file
they
precede;
They
also
contain
certain
housekeeping
information.
l~~~rk:
A
special
symbol
that
can
be
read
from,
or
written
on,
magnetic
tape.
Used
to
indicate
the
end
of
a
file
or
file
segment,
and
to
segregate
the
labels
from
data.
.I~Qg=gg§iggn!_~y§te~:
(Also
referred
to
as
"user's
tape-resident
system.")
Contains
the
Basic
Monitor
program,
the
Job
Control
program,
and
may
contain
any
IBM-supplied
and/or
user-written
programs
and/or
macro
definitions.
Consists
of
three
sections:
Monitor
section,
program
library
section,
and
macro
library
section.
Is
created
and
updated
by
means
of
maintenance
programs.
].!}12.!£l£~:
(v.
t.
) To
chan
ge
the
format
of
a
file
so
that
a
physical
record
comprises
only
one
logical
record.
See
Block.
~g~l:
User
Program
Switch
Indicators.
User
P&2Bf:am
Switc1LlndicatQf:§:
A
field
of
one
byte
within
the
communication
region
of
the
(Basic)
~onitor
program.
Specified
bits
(switches)
may
be
set
by
means
of
the
UPSI
control
statement
and
tested
in
user's
programs.
1~~i~121g=lgng!h_Re£Q£g§:
Logical
records
in
a
file
in
which
the
number
of
bytes
in
each
record
is
not
a
fixed
value,
but
may
vary
within
prescribed
limits.
Appendix
C.
Glossary
171

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the IBM System/360 20 and is the answer not in the manual?

IBM System/360 20 Specifications

General IconGeneral
BrandIBM
ModelSystem/360 20
CategoryStorage
LanguageEnglish

Related product manuals