May 2024
Intermediate to advanced
889 pages
30h 8m
English
book
The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
by Lyla B. Das
Content preview from The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
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ADVANCED PROCESSORS—80286 TO PENTIUM 14-19
The next question is – where are these tables stored? The answer is – in the main
memory, naturally. Remember also that a descriptor table is a memory array of 8-byte
entries and that the size of a table is variable. Thus, these tables are also ‘segments’ and
each of them also should have a descriptor. This may sound a bit confusing at first, but
on going ahead, this confusion will soon be overcome.
This takes us to the discussion of the processor registers which are used in the pro-
tected mode. At a particular time, the descriptor of the GDT will be available in a proces-
sor register called the ‘Global ...
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