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IBM System/360

IBM System/360
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Systems Reference Library
IBM
System/360
Operating System
System Programmer's
Guide
This
publication
describes:
File
No.
S360-20
Form
C28-
6550-
2
OS
How
to
maintain
the
data
set
cataloging
facility
of
the
Operating
System
and
the
volume-table-of-
contents
(VTOC)
of
a
direct-access
volume.
How
to
modify
or
extend
capabilities
of
the
Operat-
ing
System
in
the
areas
of
job
and
job-step
accounting~
processing
of
magnetic
tape
labels,
and
SVC
routines.
How
to
implement
the
data
set
protection
feature
of
the
Operating
System.
How
to
write
a
shift
initiator
program
for
use
when
the
multiprogramming
with
a
fixed
number
of
tasks
(MFT)
option
is
incorporated
in
the
Operating
System.
How
to
use
the
EXCP
(Execute
a
Channel
Program)
and
XDAP
(Execute
a
Direct-Access
Program)
macro-
instructions,
the
Resident
Access-Method
and
BLDL
Table
options,
and
the
tracing
routine.
Also
included
are
descriptions
of
system
macro-
instructions
used
in
modifying
the
control
program.

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