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

Select-options and parameters statement, The fields specified by select-opt...

The fields specified by select-options and parameters statement cannot be grouped together in the selection screen.  No, It can be grouped together in the selection screen

Determine the operations from functions, Operations from Functions As ...

Operations from Functions As we know, function is actually operations on object. These   functions could be simple and summarized on object model. Organise functions into oper

How to design a sequential circuit, A sequential circuit is signified by a ...

A sequential circuit is signified by a time sequence of external inputs, external outputs and internal flip-flop binary states. So firstly a state diagram and state table is used t

Determine the output waveforms for and and or gates, The voltage waveforms ...

The voltage waveforms shown in given fig. are applied at the inputs of 2-input AND and OR gates. Determine the output waveforms. Ans. The Output waveforms for AND and O

Explain in detail about the random scan display, Explain in detail about th...

Explain in detail about the Random Scan Display   This device using CRT directs the electron beam only to the parts of the screen where a picture is to be drawn. This kind of d

Cohesion assignments, what can be different assignments given on this topic...

what can be different assignments given on this topic?

What is CRC, In a frame transmission, CRC stands for? CRC stands for Cy...

In a frame transmission, CRC stands for? CRC stands for Cyclic Redundancy Check, in a frame transmission.

Diffrentiate b/w shared memory and distributed memory, Shared Memory  ...

Shared Memory  Shared Memory refers to memory component of a computer system in which the memory can accessed directly by any of the processors in the system. Distributed

Differentiate b/w wml-script & web-based scripting language, Differentiate ...

Differentiate between WML-Script and Web-based scripting languages. WML Script is a lightweight procedural scripting language, optimized for small-memory, low-power CPU wireles

When do we need to use cgi, There are innumerable caveats to this answer, b...

There are innumerable caveats to this answer, but basically any Webpage containing a form will need a CGI script or program to process the form inputs.

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