IBM System/360 Field Engineering Manual

Response to Stack/Stop/ Accept
The stotus is occe ted Yes
Command chaining is
indicated if suppress-out
is up at the control unit
at this time
The byte on bus out need
not be valid after the fall
of the in tag
(CU)
Drop
Status In
124 S/360
No
Data, if inbound, was
accepted.
Data, if outbound, was
No
on bus out. Stop is
recognized
The control unit processes by the
Stack is
recognized
by the
control unit any outbound data control unit
(CU)
Drop
Service In
/
The byte on bus out need
not be valid offer the fall
of the in tag
(CU)
Drop
Status In
Al I mention of select out assumes
proper operation of hold out as well.
Thus, select out up means select out
and hold out up, and select out down
means either select out or hold out down
(CU)
Select
Oot
No
The fall of operational in completes
the control-unit portion of this signal
sequence. The control unit now waits
for o new command or o need for
servicing
IBM CONFIDENTIAL

IBM System/360 Specifications

General

Brand	IBM
Model	System/360
Category	Desktop
Language	English