Cray CRAY-1 - 060 Ijk Integer Sum of (Sj) and (Sk) to si; 061 Ijk Integer Difference of (Sj) and (Sk) to si

r-------------------------------------------------------------------,
,
: 060ijk Integer sum of (Sj) and (Sk) to Si :
, '
: 061ijk Integer difference of (Sj) and (Sk) to Si :
, '
--------------------------------------------------------------------,
These instructions are executed in the scalar add unit.
The 060 instruction forms the integer sum of (Sj) and (Sk) and enters
the
result into Si. No overflow is detected.
The 061 instruction forms the integer difference of (Sj) and (Sk) and
enters the result into Si. No overflow is detected.
Hold issue conditions
034 - 037 in process
Exchange in process
S
register access conflict
Si, Sj, or Sk reserved
Execution time
Si ready 3 CPs
Instruction issue 1 CP
Special cases
For 060:
(Si) = (Sk)
= 2
63
(S i )
(Si) =
if j = 0 and k ~ 0
if j = 0 and k = 0
(Sj) with 2
63
complemented if j ~ 0 and k = 0
For 061:
(Si) = -(Sk) if j = 0 and k ~ 0
(Si)
= (Sj) with 2
63
complemented if j ~ 0 and k = Q
2240004
4-40
E