Operating Systems · Chapter 9

Paging & Address Translation Visualizer

Trace how a virtual address is split into page number and offset, checked in the TLB, resolved through the page table, and converted into a physical address.

Virtual address Page size (bytes) Virtual pages Physical frames

Translation Flow

Virtual address–

Page + offset–

TLB lookup–

Page table–

Physical address–

Enter an address and translate it.

Page Table

Page	Present	Frame	Valid range

TLB

Page	Frame	Age

The TLB stores recently translated page → frame mappings. This demo uses a small LRU-style TLB.

Address Details

Page number–

Offset–

Frame number–

TLB state–

Virtual address (binary): –

Physical address (binary): –

Concept Guide

Page number: floor(virtual address / page size).

Offset: the position inside the selected page.

TLB hit: the page-to-frame mapping is already cached, so page-table lookup can be skipped.

TLB miss: the page table must be consulted. If the page is present, the mapping can then be inserted into the TLB.

Page fault: the page-table entry says the page is not currently in physical memory.