Associative Register


parallel search - if associative register exist
<details><summary>

Address translation (A´, A´´) </summary>

– If A´ is in associative register, get frame number out
– Otherwise, get frame number from page table in memory
</details>

### Effective Access time
Associative lookup = `math: \epsilon `time unit - related to hardware performanc
Assume memory cycle time is 1 microsecond
Hit ratio (`math: \alpha`) - related to algorithm
$$EAT = (1 + \epsilon)\alpha + (2 + \epsilon)(1 - \epsilon) \\ = 2 + \epsilon - \alpha$$





