IBM 2025 Maintenance Manual page 13

Processing unit
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l'%j
I-'·
l.Q
c:
ti
Cl)
i-i.
I
.i::
.
()
0
ti
Cl)
I
Cf)
rt"
0
ti
$lJ
l.Q
Cl)
"'d
~
~
()
:::r
QI
ti
rt"
1778
SAR
SAR BITS
2
BITS
FROM CPU
3
HIGHEST BSM
B2A2
SAR BITS
TO 2ND BSM
SAR
BITS
4
B247
SAR
BITS
5
Not used in this decode
X
=
Can be 1 or 0
B19B
x
DEC
B19B
x
DEC
0-16
1 or 0
Bit must be as specified
to select this decode.
-----OXX
J
SAR BITS 1 9 10 11
12 13 14
B198
B19B
x
y
DEC
DEC
0-B
0-16
B198
B19B
x
y
DEC
DEC
0-8
0-16
}sAR BITS 2-8
-0--0XX
H
J
K
B19B
3B22
D
SAR
I
y
BITS
0
D
DEC
E
B
0
A
0-16
R
D
BK
12K
16K
B19B
6329
y
DEC
6329
0-16
-1--0XX}
SAR BITS 2-B
-1--lXX
L
M
D
I
0
D
E
B
0
A
R
D
BK
----lXX
SAR BITS 1 9 10 11 12 13 14
N
D
B19B
I
0
y
D
E
DEC
B
0
A
R
0-16
D
12K
16K
B19B
y
DEC
0-16
OOXX---
} SAR BITS
10XX---
2 - 8
8198
8198
y
x
DEC
DEC
0-16
8-16
B19B
B198
DEC
0-16
8-16
SAR BITS
}
1 9 10
11
12
13 14
B197
AUX
y
DEC
X------
'--..,---)
0141
SAR BITS
MAIN
AUX
2-B
CTRL
4649
s
0
u
R
c
D
E
R
I
v
E
s
X+Y
11XX---
1 9 10
11
J
SAR BITS
12 13 14
SAR BITS
2-8
01XX---J
Terminator P.N. 5803007 in Highest BSM Location B2A3

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