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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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