IBM 7090 Instruction-Reference page 25

From Multiplexor SB
SB OR'ing Multiplexor
15 Pos
Op Pane I Keys
/
"'
Comp Inds
1
t
1
I t
.
~
[0
Indicators
35
~
1 Tag Reg
I
G
l5-5
Stg Reg
~
18,19,20
35
I
I
I
J..
I
I
SC12-17+AD3-8
18 Pos
~
.-------
u •
1
I
1 S 11
Prog Reg
1 Shift Ctr
I
Q pi 13-11 112- 171
Adder
t
~3
17l
9 10 17
XR A,B,C
1
I'
t
I
1
n
,
.-----
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3
Prog Ctr
171
13
Adr Sw
171
u
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u
I I
«
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E
0
U
1
30 - 35
~:11-5
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1
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0-35
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13 171
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5
1
I
Adr Reg
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AC
MQ
I
I
t
t
1
I
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To Adr Sw in Multiplexor
FIGURE 3.1-1. 7090 CENTRAL PROCESSING UNIT