Write a program to input an address, Computer Engineering

Assignment Help:

  Write a program to input an address i.e. 20 Hex and read the byte (char) contents of that address  

Answer
 
include
void main()
{
char prompt;

Date: 26th August 2012

Version 1.0  
Function : To read an address in memory       
 Modifications:   none*/
unsigned long int address;
unsigned char *add;
unsigned char data;
printf("Please enter in the address  you want to read\n\r");
scanf("%lx",&address);
add = (unsigned char *)address;
data = *add;
printf("The data at the address %08lx is %02x\n\r",address,data);  
printf("Press and key to exit \n\r");
scanf("\n%c",&prompt);
 
}
  
Note: Care should be taken since some operating systems do not allow the user to read any memory address. The PC environment is one of these in that the PC runs under protected memory and hence looking at memory outside this area can yield 'General protection errors '. In order to access the memory in a PC, the operating system must tag the memory area for common use by the program. This is usually achieved by either writing a windows driver for the hardware/address or my poking in an allocated area i.e. allocating static space by an array or using malloc to reserve bytes of area.


Related Discussions:- Write a program to input an address

Definition of decision support system, Q. Definition of Decision support sy...

Q. Definition of Decision support system? Definition of DSS: A decision support system is a specific kind of information system which is an interactive system that supports in

Feature Extraction and clustering, Hi, It is a data mining project I have ...

Hi, It is a data mining project I have a CSV file that has numbers data set. The data set contains images of handwritten digits. Recognizing handwritten digits is already a mature

Characteristics and features of client/server computing, What are the chara...

What are the characteristics and features of Client/Server Computing? Several of client/server computing architecture is listed below: a. It comprises a networked webs of sm

Mathcad solution to compute the ellipsoid radii , Question: Write a Mat...

Question: Write a MathCad solution to compute the ellipsoid radii at a point. Use the defining parameters for the GRS80 ellipsoid - a and f - in table 19.1. Program Equation 19

Explain firewall, A firewall is Software or hardware used to separate a...

A firewall is Software or hardware used to separate a private network from a public network.

Displaying the list of files with dir, Q. Displaying the List of Files with...

Q. Displaying the List of Files with DIR? You can display the list of files kept in a diskette or hard disk with the DIR commend. This Commends list files and sub directories i

Explain the pdca cycle, Explain the PDCA cycle. PDCA is a four step pro...

Explain the PDCA cycle. PDCA is a four step problem solving method. The following are the description of each step: 1. P - Plan (Devise your Plan). Identify an opportunity a

Hard disk technology - computer architecture, Hard Disk Technology: Fi...

Hard Disk Technology: Figure of a computer hard disk drive           HDDs record data by magnetizing ferromagnetic material directionally, to represent

What is verification method, The verification method states how Robot compa...

The verification method states how Robot compares the baseline data captured while recording with the data captured during playback.

When gravity is the merely force acting on an object, Q. When gravity is th...

Q. When gravity is the merely force acting on an object the object is in what? Answer:- One respond is that it is in free-fall in a vacuum to eliminate atmospheric drag.

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