IBM System/360 System Programmer's Guide

ENTRY CONDITIONS AND GENERAL LOGIC FLOW OF ~HE EDITOR ROUTINES
Figure 6 Editor Routine Entry Conditions and the logic
flowcharts (Figures 7 and 8) with their accompanying text present the
basic information necessary to design and write your editor routines.
The logic charts depict a suggested logic -- oriented towards resolving
label and density conflicts by altering the characteristics of the
mounted volume.
ENTRY CONDITIONS
Figure 6 presents the four conditions under which the control program
OPEN or EOV routines transfer control to your editor routines, and the
general action the editor routine takes to permit processing on the
current volume to continue. The first two conditions arise only when
the tape voluwe is mounted on a dual-density tape device.
Entry from the EOV routines occurs when a volume switching operation
is necessary and any condition noted in Figure 6 is present.
')6

IBM System/360 Specifications

General

Brand	IBM
Model	System/360
Category	Desktop
Language	English