Paged virtual memory - computer architecture, Computer Engineering

Assignment Help:

Paged virtual memory:

Mostly all implementations of virtual memory divide the virtual address space of an application program into pages; a page is a block that contains contiguous virtual memory addresses. Pages are generally at least 4K bytes in size, and systems with big virtual address ranges or big amounts of real memory (for example: RAM) generally use larger page sizes.

Page tables

Mostly all the implementations use page tables to translate the virtual addresses of application program into physical addresses (also referred to as "real addresses") used by the hardware to process instructions. Each entry in the page table have a mapping for a virtual page to either the real memory address at which the page is stored, or an pointer that the page is presently held in a disk file. (Although most of the system does, some systems cannot support use of a disk file for virtual memory.)

Systems can have 1 page table for the overall system or a distinct page table for each application. If there is only 1, different applications which are running at the one time share a single virtual address space, for example they use different parts of a single range of VA. Systems which are use multiple page tables provide multiple virtual address spaces - concurrent applications think they are utilizing the same range of VA, but their separate page tables redirect to different real addresses.

 

 


Related Discussions:- Paged virtual memory - computer architecture

Show a string in assembly language, Q. Show a string in assembly language? ...

Q. Show a string in assembly language? MOV AH, 09H MOV DX, OFFSET   BUFF INT    21H Here data in input buffer stored in data segment is intended to be displayed on mo

Give an account of issue pertaining in c language, Give an account of the i...

Give an account of the issue pertaining to compilation of if statement in C language Control structures as if cause significant gap in between the PL domain and the execution d

Explain about mmx architecture, Explain about MMX architecture MMX arc...

Explain about MMX architecture MMX architecture introduces new packed data types. Data types are eight packed, consecutive 8-bit bytes; four packed, consecutive 16-bit words;

Design a 4:1 mux in verilog, Design a 4:1 mux in Verilog   Mult...

Design a 4:1 mux in Verilog   Multiple styles of coding. e.g. Using if-else statements if(sel_1 == 0 && sel_0 == 0) output = I0; else if(sel_1 == 0 && sel_0 ==

How to clear a datagrid on a button click, How to clear a datagrid on a but...

How to clear a datagrid on a button click? You require to Clear the DataSource of the dataGrid. So try this: dataSet1.Clear(); dataGrid1.DataSource = dataSet1.TableNam

Inheritance, Create a new project, LastNameFirst 05, for this assignment. ...

Create a new project, LastNameFirst 05, for this assignment. You will need to define the classes depicted in the class diagram below. All of the classes should contain complete ja

What is ai, Artificial intelligence ("AI") can mean a lot of things too man...

Artificial intelligence ("AI") can mean a lot of things too many people. Much confusion arises that the word 'intelligence' is ill-defined. The phrase is so broad that people have

What are the advantages of batch processing, What are the advantages of bat...

What are the advantages of batch processing This has the advantage which jobs can be processed when computer resources are less busy (for example during the evening or at night

E-recruitment system, This project is aimed at developing a web-based and c...

This project is aimed at developing a web-based and central recruitment Process system. this web site is for Fresher candidates who graduated. Some features of this system will be

Identify which stores most no. of bits in memory store, Which of the memori...

Which of the memories stores the most number of bits ? Ans. 5Mx8 = 5 x 220 x 8 = 40M (max).

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