IBM 7090 - Page 36

Cin 35
Cin 35
Cin 35
Cin 35
Cin 3
+
(35-30)LA
+
+
(35-30)LA
+
A (29-25)LA
A
A
(29-25)LA
A
(24-20 LA
(24-20 LA
(24-20)LA
(19-15
LA
(19-15)LA
Co(3-Q)
(14-9)LA
Co(35-30
(S-4)LA
(29-25)LA
+
(24-20) LA
A
+
(19-15 LA
(24-20 LA
A
(14-9)LA
(19-15)LA
(14-9)LA
Co 29-25)
(S-4)LA
(24-20
LA
+
(19-15 LA
A
Co(29-25)
(14-9)LA
(24-20 LA
(19-15 LA
+
Co(24-20
A
eN
(19-15 LA
+
(14-9)LA
C,)l
(S-4)LA
(14-9)LA
A
+
+
0
0
Cin29
Cin 24
2.02.53.1 2.02.52.1
Cin 3
2.02.50.1
Cin - Carry In
FIGURE 3.1-11. SECOND STAGE LOOK AHEAD CIRCUITS