Address translation
Goal: To translate a logical address LA to physical address PA.
1. LA = (Logical Page Number, Offset within page)
Logical Page number LPN = LA DIV pagesize
Offset = LA MOD pagesize
2. If Pagetable(LPN).Present step 3
else PageFault to Operating system.
3. Obtain Physical Page Number (PPN)
PPN = Pagetable(LPN).Physical page number.
4. Compute Physical address:
PA = PPN *Pagesize + Offset.