IBM System/360 System Programmer's Guide

NONSTANDARD LABEL PROCESSING ROUTINES;
VOLUME LABEL AND DUAL-DENSITY TAPE DEVICE
EDITOR ROUTINES
Section 1 of this chapter explains how
to write routines to process nonstandard
labels on magnetic tape, and how to add
them to the control program.
Section 2 of this chapter explains how
to write tape volume label and dual-density
tape device editor routines and insert them
in the control program in place ef IBM
supplied editor routines.
Before reading this chapter, you should
be familiar with the information contained
in the prerequisite publications listed
below. Documentation of the internal logic
of the standard label processing routines
can be obtained through your IBM Branch
Office.
Prerequisite Publications
The IBM System/360 Operating System:
Assembler Language publication (Forrr
C28-6514) contains the information neces-
sary to code programs in the assemtler
language.
The IBM System/360 Operating system:
Control Prograrr Services publication (For~
C28-6541) describes the macro-instructions
that are used to request services from the
control program.
The IBM System/360 Operating System:
System control Block publication (Form
C28-6628) contains format illustraticns and
field descriptions of the system control
blocks referred to in this chapter. This
publication also describes the format and
fields of standard magnetic tape latels.
The IBM System/360 Operating Systen~:
Data Management publication (Ferm C28-6537)
discusses magnetic tape labeling.
Label Processing Routines 43

IBM System/360 Specifications

General

Brand	IBM
Model	System/360
Category	Desktop
Language	English