Alpha 21264/EV67 Hardware Reference Manual
Internal Architecture 2–19
Instruction Issue Rules
E L U U L L U U U E L E U L L U
E U E E L U L U U E L L U U L L
E U E L L U U L U E L U U L L U
E U E U L U L U U E U E U L U L
E U L E L U L U U E U L U L U L
E U L L U U L L U E U U U L U U
E U L U L U L U U L E E U L U L
E U U E L U U L U L E L U L U L
E U U L L U U L U L E U U L L U
E U U U L U U U U L L E U L L U
L E E E L U L U U L L L U L LL
L E E L L U U L U L L U U L L U
L E E U L U L U U L U E U L U L
L E L E L U L U U L U L U L U L
L E L L L U L L U L U U U L U U
L E L U L U L U U U E E U U L L
L E U E L U U L U U E L U U L L
L E U L L U U L U U E U U U L U
L E U U L L U U U U L E U U L L
L L E E L L U U U U L L U U L L
L L E L L L U L U U L U U U L U
L L E U L L U U U U U E U U U L
L L L E L L L U U U U L U U U L
— — U U U U U U U U
Table 2–3 Instruction Group Definitions and Pipeline Unit (Continued)
Instruction Class
3 2 1 0
Slotting
3 2 1 0
Instruction Class
3 2 1 0
Slotting
3 2 1 0