Instruction A: ROB allocate, Op fetch, Rename, Issue (add r8, r0, #25)

Reorder Buffer

| Status | Dst | Value

0 | Issued_Valid | 8 | 0

1 | Empty | 0 | 0

2 | Empty | 0 | 0

3 | Empty | 0 | 0

4 | Empty | 0 | 0

Head =>

<=Tail

0: 0 | F

1: 0 | F

2: 0 | F

ROBMap | V

30: 0 | F

31: 0 | F

r8: 0 | T

r9: 0 | F

r10: 0 | F

Shelving Buffers

| Status | Dst | Op1 | V | Op2 | V

0 | Full | 0 | 0 | T | 25 | T

<=Tail

1 | Empty | 0 | 0 | F | 0 | F

Head =>

Previous slide

Next slide

Back to first slide

View graphic version