Cray CRAY-1 - Page 132

When the j designator is 3, the constant 0.75 x 2
48
is entered into
Si .
When the j designator is 4, 5, 6, or 7, the normalized floating point
constant
0.5, 1.0, 2.0, or 4.0, respectively is transmitted to Si.
Hold issue conditions
034 - 037 in process
Exchange in process
Si register access conflict
~,i reserved
Ak reserved (all instructions)
Execution time
Si ready 2 CPs
Instruction issue 1 CP
S12ecial
cases
(Ao)
=
1 if k = 0
(Si)
=
(.A.k)
if j =
0
(Si)
=
(.A.k)
sign extended
if j = 1
(S i )
=
(Ak) unnormalized
if j
=
2
(S i )
=
0.6 x 2
60
(octa 1 )
if j
=
3
(Si)
=
0.4 x 2° (octal)
if j
=
4
(S i )
= 0.4 X 21
(octal)
if j
= 5
(Si)
= 0.4 x 22
(octal)
if j
= 6
(S i )
= 0.4 X 2
3
(octal)
if j
= 7
2240004
4-46
E