IBM System/370

Logical
Device
2305 module
2835 Control Unit
Address
Channel
Used
Program
Sector
~
Registers
Counter
0
[I[J
rn:J
0
CC SET SECTOR 15
CC SEARCH ID
•
2 [l[J
•
•
3
[MJ
CC
SET SECTOR 50
CC SEARCH
ID
4
c=J
•
•
•
5
c=J
2
CC
SET SECTOR
25
CC
SEARCH 10
6
c=J
•
•
•
7
c=J
3 CC
SET SECTOR 80
CC SEARCH 10
Figure 20.15.3.
Multiple requesting on the 2305 facility
48