Illustrated Example
To the right is a generic pipeline with four stages:
- Fetch
- Decode
- Execute
- Write-back
The top gray box is the list of instructions waiting to be executed; the bottom gray box is the list of instructions that have been completed; and the middle white box is the pipeline.
Execution is as follows:
Time | Execution |
---|---|
0 | Four instructions are waiting to be executed |
1 |
|
2 |
|
3 |
|
4 |
|
5 |
|
6 |
|
7 |
|
8 |
|
9 | All four instructions are executed |
Read more about this topic: Instruction Pipeline
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