Determine the purpose of GDTR, Computer Engineering

Assignment Help:

Elucidate the purpose of GDTR. If the microprocessor sends linear address 00200000H to paging mechanism, which paging directory entry and which page table entry is accessed?

GDTR (global descriptor table register) and IDTR (interrupt descriptor table register) comprise the base addresses of descriptor table and its limit. Limit of each descriptor table is 16 bits as maximum table length is 64 Kbytes. When the protected mode operation is desired, address of the global descriptor table and its limit are loaded into the GDTR.

For linear address 00000000H - 003FFFFFH, first entry of the page directory is accessed. Every page directory entry signifies or repages a 4-Mbyte section of the memory system. Contents of the page directory select a page table which is indexed by the next 10 bits of the linear address. This means that address 00000000H - 00000FFFH selects page directory entry 0 and page table entry 0.

 


Related Discussions:- Determine the purpose of GDTR

Illustration of parallel programming environments, Q. Illustration of paral...

Q. Illustration of parallel programming environments? Let's discuss illustrations of parallel programming environments of Intel paragaon XP/S and Cray Y-MP software. The Cra

Major characteristics of a computer family, Q. Major characteristics of a c...

Q. Major characteristics of a computer family? Let us summarise the major characteristics of a computer family. These are as below: Figure: Characteristics of computer

Evaluation functions for cutoff search , Evaluation Functions for Cutoff Se...

Evaluation Functions for Cutoff Search - artificial intelligent Evaluation functions guess the score that may be guaranteed if a specific world state is reached. In chess, such

What is control store, What is control store? The microroutines for all...

What is control store? The microroutines for all the instructions in the instruction set of a computer are kept in a special memory known as the control store.

Average enzyme activity , Activity of a some  enzyme was calculated  in ext...

Activity of a some  enzyme was calculated  in extracts from brain, heart and lung. In every  tissue,  the activity was calculated  various  times, giving the following results (in

Interrupt signal interconnection network (isin), Interrupt Signal Interconn...

Interrupt Signal Interconnection Network (ISIN) When a processor needs to send an interruption to another processor, then this interrupt initial goes to ISIN, through which it

How do you traverse a btree in backward in-order, Put the node in the right...

Put the node in the right subtree Then, Put the root  Put the node in the left subtree

Bell lapadula model, A computer system provides protection using the Bell-L...

A computer system provides protection using the Bell-LaPadula policy. How would a virus spread if A) the virus were placed on the system at system low (the compartment that all o

Advantage of using interrupt initiated data transfer, What is the advantage...

What is the advantage of using interrupt initiated data transfer over transfer under program control without interrupt? In the interrupt initiated data transfer, the processor

What is a file, What is a file? A file is a named collection of relate...

What is a file? A file is a named collection of related information that is recorded on secondary storage. A file having either programs or data. A file has sure "structure" b

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd