Explain the term overlays, Computer Engineering

Assignment Help:

Explain the term Overlays.

An overlay is an element of program that has the same load origin as several other part of the program. These are used for reduce the main memory requirement of a program. If the problem arises when the size of program exceeds the memory size, so overlays are used. Structure of these programs contains a permanently resident portion, termed as the root.

A set of overlays

To begin with, the root is loaded in memory and specified control for the reasons of execution. Another overlays are overwrites a previously loaded overlay along with similar load origin, this reduces memory requirement of a program. This is also possible to execute programs that size exceeds the memory size.


Related Discussions:- Explain the term overlays

What is program controlled i/o, What is program controlled I/O? In prog...

What is program controlled I/O? In program controlled I/O the processor repeatedly checks a status flag to achieve the needed synchronization among the processor and an input a

State in brief about polymorphism, State in brief about Polymorphism C...

State in brief about Polymorphism Class hierarchy is the deciding feature in the case of more than one implementation of properties. An object oriented program to compute the

Explain handle graphics in matlab, This is the MATLAB graphics system. It c...

This is the MATLAB graphics system. It contains high-level commands for two-dimensional and three-dimensional data visualization, image processing, animation, and presentation grap

Phython, super ascii string checker

super ascii string checker

Evaluate the damping coefficient, A certain car has suspension modes which ...

A certain car has suspension modes which are uncoupled front to back.  When a person with a mass of 60 kg sits in the rear of a car, in the centre of the seat which is directly ove

Explain classless inter-domain routing, Explain Classless Inter-Domain Rout...

Explain Classless Inter-Domain Routing. It is a new addressing scheme for the internet that permits for more efficient allocation of IP addresses than old class A, B and C addr

What is dma operations, What is DMA operations? State its advantages. ...

What is DMA operations? State its advantages. In order to transfer bulk amount of data among memory and I/O device without involvement of CPU, the Direct Memory Access metho

What are common reason for error massages while copying file, Q. What are c...

Q. What are common reason for error massages while copying file? While copying files with copy, DOS in encounters any error, it displays a suitable error massage. The common re

How to work in dreamweaver?, HOW TO WORK IN DREAMWEAVER? How and Where ...

HOW TO WORK IN DREAMWEAVER? How and Where to open Dreamweaver? Step 1: Click on Start Step 2: Select Program Step 3: Select Macromedia Dreamweaver Step 4: Click on

How can we minimize problems occurring because of branch., Q. How can we mi...

Q. How can we minimize problems occurring because of the branch instructions? We may use various mechanisms which may minimize the effect of branch penalty. To keep mult

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