.::Memory::.

The Pentium can switch between four different memory management modes.

• Unsegmented unpaged memory.
• Unsegmented Paged memory.
• *Segmented unpaged memory.*
• Segmented paged memory.

The pentium normally uses a Segmented memory organization.

The Pentium's memory is byte addressable

The Pentium's address length is 32-bits so it can support up to 4 Gigabytes without segmentation and 64 Terabytes with segmentation.

The Pentium's memory is divided up into segments.

• Code Segment (CS register)
• Data Segment (DS register)
• Stack Segment (SS register)
• Extra Segment (ES register)

Each segment register can hold a 16 bit address so each segment is 64KB.

Each register holds the address of the top of the segment.

The Pentium uses Segmentation normally over paging because the hardware of the CPU is made to support segmentation specificly.