SEGMENTATION
Pentium CPU has six 16 bit segment registers called SELECTORS
Logical Address = SEGMENT + OFFSET (in SELECTOR)
The information held in SELECTOR register is used by CPU to determine:
(i) Start (Base) of Segment in the Linear Space
(ii) Length of Segment
(iii) Privilege Level of the Segment
CPU Selectors provide index (pointer) to Segment Descriptors stored in RAM
in the form of memory structures called Descriptor Table(s).