IBM 2025 Maintenance Manual page 113

Processing unit
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!5B52 5354 5556 5758 595A FF4F FFFF FFFF
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Graphic
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(Folded)
Graphic Position Code
O 1
02
03
04
05
06
07
08
09
OA
OB
OC
OD
OE
OF
10
11
12
13
14
15
16
17
18
19
1A
1B
1C
10
1E
1F
20
21
22
23
24
25
26
27
28
29
2A
2B
2C
2D
2E
2F
30
31
32
33
34
35
36
37
38
39
3A
3B
3C
3D
3E
3F
40
41
42
43
44
45
46
47
48
[ 49
I
4A
I
48
I
4C
I
4D
I
4E
4F
50
51
52
53
54
55
56
57
58
59
5A
5B
5C
5D
5E
5F
60
l l l l l l
#
-
$
1
2
3
4
5
6
7
8
9
0
s
T
A
B
c
61
62
63
64
65
66
67
68
69
6A
6B
6C
6D
6E
6F
70
71
72
73
74
75
76
77
78
D
E
F
G
H
I
J
K
L
M
N
0
p
Q
R
u
v
w
x
y
z
*
Figure 1-94.
Printer Translate Table for MCS: YN Arrangement; Count Length 78 (Hex)
Chnl Status
Flags
&
OP
Unit Status
Unit Sense
Residual Count
Next CCW Address
CA
CE
CF
0
- Secondary Bit
0 - Chain-Data (CD) Flag
0
0
- Command Reject
1 - Incorrect Length
1 - Chain-Command (CC) Flag
1
Not Used
1
- Intervention Required
2 - Program Check
2 - Suppress-Length-Indication (SU) Flag
2
2
- Not Used
3 - Protection Check
3 - Skip Flag
3
- Busy
3 - Equipment Check
4 - Channel Data Check
4 - Program-controlled-Interruption (PCI) Flag
4 - Channel End
4 - Data Check
5 - Channel Control Check 5 - Active Bit
5 - Device End
5
- Block Data Check
)
- Interface Check
6 - Input
6 - Unit Check
6
- Gate Load
**
6
7 - Int. In Int Buffer Bit
7 - Output
7
- Unit Exception
7 - Channel-9
(Channel 12)
Not Sense Bits - these are stored
here but stripped before a sense
byte is presented to the channel.
Figure 1-95.. 14 03
ucw
Forrra t
2025 FEMM (7/69) 1-103

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