IBM System/360 2050 Maintenance Manual page 35

"'
...
KH121-141 and KH361
Seq Ctr 4
Select Sequence Counter
u
Rl
-1""
I
I
I
r---
Seq Ctr 5
- l
R2 Wl W2
Step Sequence Counter to 5
,____~rt_
Sequence Counter 5 Decoded
Coll for ROS
ROS Mode Request
MS
Mode
ROS M:>de
Not ROS Clock Off
Tum On CPU,
ljO,
and MS Clocks
ROS Clock
MS Clock
I
I
I
I I
___r---t_
J _ j
'
1
I
ROS Mode
ROAR=2CO
ROAR=F89
W2
I
I I
CPU Clock
'--~~-'--~~-'--~~__.._~~___..~~~~
NOTES:
1. Sequence counter changes state during R 1.
2. Gate word on scan bus from R2 late reg to next R2.
3. Gote scan
bus
to SDR and fire storage SOR, !AR at W2.
FIGURE 18. LOGOUT UNDER SEQUENCE COUNTER AND MAIN STORE MODES (PART 2 OF 2)
lv\oin Store M:>de
Store ROS
Group 1
Store ROS
Group 2
Store ROS
Group 3
Store ROS
Group 4
Store ROAR
HA Address to
ROAR, Gate
ROS Clock
Gate ROS Clock
and Call for ROS
M:,de
RH371
Figure 15 (1 af 2}
ROS Mode
Seq Ctr 0
Seq Ctr 1
Seq Ctr 2
Seq Ctr 3
Seq Ctr 4
Seq Ctr 4 and Rl
Seq Ctr 5