PPT Slide

Entry # Instruction Issue Execute Write result Commit

1 Load F6, 34(r2) yes yes yes yes

2 Load F2, 45(r3) yes yes yes yes

3 Mul F0, F2, F4 yes yes

4 Sub F8, F6, F2 yes yes yes

5 Div F10, F0, F6 yes

6 Add F6,F8,F2 yes yes

Reservation Stations

Name Busy Fm Vj Vk Qj Qk

Add 1 no

Add2 yes Add (#2) (#4)

Mul1 yes Mul (#2) (F4)

Add3 no

Mul2 yes Div (#1) (#3)

F0 (#3) F2( ) F4 ( ) F6(#6 ) F8 (#4) F10 (#5) F12...

Reorder buffer

Cycle after sub has written its result in reorder buffer but can’t commit yet

Still waiting for #3 to commit