IBM System/370 145 Reference Summary page 147

Byte Bit FCND - 21
(I
FA Only)
0
Busy
1
On-Line
2
Unsafe
0
3
FDS Spare
4
Pack Change
5 End of Cylinder
6
Multimodule Selected (JL511)
7 Seek Incomplete (WF101)
0
1
2
-
1 3 FHC
- - Diagnostic,
4
-
Head/Cylinder
5
-
(CE Panel)
6
7
-
(FE110)
0
-
1
-
2
-
2 3
FED
-
- Diagnostic
4
-
Error Display
5
-
(CE Panel)
6
-
7
..J
(JK312)
0
Module Select Gate
1
]
2
- - Module
3 3
FMOD- Select (JK611)
4 Module not Selected
5
1 _
Physical
6
- Module
(JL511)
7
- Selected
Ill
11.23