IBM System/360

B
A
Figure 4.
50
(1)
(20)
Obtain
Restore
Main
Registers
Storage
(3)
Release
(21)
Save
Registers
Main
Storage
Return to
(22)
Control Program
No
(13)
Set Up Set Up
CCW
CCW
Adjust
Create
(16)
(18)
for Next
Label
DCB
(18)
General Flow of a Nonstandard Label Processing Routine After
Receiving Control From the CLOSE Routine