IBM System/360 2050 Maintenance Manual page 185

Processing unit
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Bit
Bit
SOR
ALO
Position
IAR
ALO
Position
P0-7
BA 072
0
PB-15
CA 171
9
0
BA 001
1
8
CA 161
10
1
BA 011
2
9
CA 161
11
2
BA 021
3
10
CA 161
12
3
BA 031
4
11
CA 161
13
4
BA 041
5
12
CA 151
14
5
BA 051
6
13
CA 151
15
6
BA 061
7
14
CA 151
16
-
7
BA 071
8
-
-
-ps:-1:
-
-BAl52-
- 9 -
15
CA 151
17
t-
-P16-~
- -
-
l:Ali'l- -
-is--
8
BA 081
10
16
CA 141
19
9
BA 091
11
17
CA 141
20
10
BA 101
12
18
CA 141
21
11
BA 111
13
19
CA 141
22
12
BA 121
14
20
CA 131
23
13
BA 131
15
21
CA 131
24
14
BA 141
16
22
CA 131
25
15
- B~15_!_ -
-
-
17
-
-1
t--
p
16-23- -
-
BA 232
JS-
23
CA 131
I-
26
I-
-1"24-:il -
._,
-· CAl7l-
2 /
--
16
BA 161
19
24
CA 121
28
17
BA 171
20
25
CA 121
29
18
BA 181
21
26
CA 121
30
19
BA 191
22
27
CA 121
31
20
BA 201
23
28
CA 111
32
21
BA 21 l
24
29
CA 111
33
22
BA 221
25
30
CA 111
34
23
BA 231
26
f-
-P2°4-3l -
-1
-
8A
312 -
_,
-w--
31
CA 111
35
24
BA 241
28
25
BA 251
29
26
BA 261
30
FIGURE 171. IAR INDICATORS
27
BA 271
31
28
BA 281
32
29
BA 291
33
30
BA 301
34
31
BA 311
35
FIGURE 170. SOR INDICATORS
ROS
Address
Function
Resv I ts Observed
202
* AK-T
Address keys to latches (8-31).
Display latches, change and observe address key settings.
T-A
Latches (8-31) to SAR.
Display SAR, change and observe address key settings.
203
* AK-T
Address keys
to
latches (8-31).
T-lA
Latches (8-31) to IAR.
Display IAR, change and observe address key settings.
205
DK-T
Doto keys to latches; bits 28-31 to F.
Di>play latches, change and observe data key settings.
T-L
Latches to L register.
Display L register, change and observe data kay settings.
20C
DK-T
Doto keys ta latches; bits 28-31
ta
F.
T-R
Latches to R register
Display R register, changG and observe data key settings.
21F
DK-T
Data keys to latches; bits 28-31 to
f.
T-H
Latches ta H register
Displa)• H register, change and observe data k!l_ settings
283
DK-T
Doto keys
to
latches; bits 28-31 to F.
T-M
Latches to M register
Display M register, change and observe data key settings.
2AA
DK-T
Data keys ta latches; bits 28-31 to F.
r-o
Latches to MOR .
Display MOR, change and observe data key settings
2AB
DK-T
Dato keys
to
latches; bits 28-31 to F.
r-J
Latches 12-15 to
J
register.
Display
J
register, change and observe do.to key settings.
2AE
DK-T
Data keys to latches.
T-MD
Latches 8-11
to
MD.
Display MD, change and observe data key 111ttings.
202
AK-T
Back to rirst step in closed loop.
*
For AK - T machine check will came on when keys ore changed; change keys and reset. Error should remain off
Channel Check Note: Display Band C registers for each channel. Set data keys to the following combinations: zeros, all ones, and altemaht
hex 5 's and A's and check for correct data transfer.
FIGURE 172. ROS FUNCTION CHECK
184
(3/71)
Model 50 FEMM

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