IBM System/360 Field Engineering Manual page 20

Multiply (Long)
NMDR
2c
RR Rl,R2 Multiply opr 1 by opr 2 Spec Unchanged
(FPR)
(FPR) Exp Oflo
Product:
prenormalizes the opr's and post-
Exp Uflo
normalizes the intermediate product.
(If all fraction digits (14)
=
0: the product
sign and char are made zero. )
(The intermediate product fraction is
truncated before left-shifting. )
Multiply (Short) NME
7C
RX Rl, D2(X2, B2) Multiply opr 1 by opr 2 Adr Unchanged
(FPR)
(FPR) Spec
Product: prenormalizes the opr's and post-
Exp Oflo
normalizes the intermediate product. Exp Uflo
(If
all fra.:ti0r1 digitt:. {14) - V.
Lhe 1Ji:'0Uur..:L
sign and char are made zero.)
(The intermediate product fraction is
truncated before left-shifting.)
(The 2 low-order fraction digits of the
product always
=
zero. )
Multiply (Short)
NMER
3C RR Rl,R2 Multiply opr 1 by opr 2 Spec
Unchanged
(FPR) (FPR) Exp Oflo
Product: prenormalizes the opr's and post- Exp Uflo
normalizes the intermediate product.
(H all fraction digits (14) =- 0: the product
sign and char are made zero. )
(The intermediate product fraction is
truncated before left-shifting. )
OR 0 56 RX Rl, D2(X2, B2) The ORed sum of both opr's into opr 1 Adr 0 Result - 0
Spec 1 Result
f
0
OR
oc
D6
SS
Dl(L, Bl), D2(B2) The ORed sum of both opr's into opr 1 Prat 0 Result - o
(Left to right byte by byte) Adr 1 Result
f
0
(Max number of bytes ORed: 256)