IBM 7090 Instruction-Reference page 81

(Multiplicand is a
Normal Zero)
Mpy Stg Zero
2.09.53.1
End Op in
E Time
2.09.46.1
Reset MQ
Ell (Dl)
2.15.1B .1
No
Yes
FP End Op
2.10.25.11
To End Operation (Figure 5.3-24D)
I Time
Pri Op 26
E Time
SR(l-B)--'AD
E Time
2.10.25.1
MQ
(9-35)~SR
EO (D3)
2.12.07.1
MQ = 0 Turn On
FP Tgr E2 (Dl)
2.12.07.1*
Turn On FP
Tgr
2.10.29.1
OBJECTIVES:
1. Multiplicand to SR
2. Zero Test Mul tipJ ier Fraction and
Multiplicand for a Normal Zero
3. 33B to Shift Counter
4 . Reset Ac (9-35)
33B~SC
E3 (Dl)
2.11 .7B.l
SB+-SR
E7 (D1)
2.12.50.1
AD(Q-35)
~AC
Al0 (Dl)
2.13.31.1
AC (9-35)
=
Zero
AC (I-B) = Multiplicand Char
* Conditioned by UFM
To l Time 1st Step (Figure 5.3-24B)
FIGURE 5.3-24A. UFM -0260; FMP +0260
80