Define com programs, Computer Engineering

Assignment Help:

Q. Define COM Programs?

A COM (Command) program is binary image of a machine language program. It is loaded in memory at the lowest available segment address. Program code starts at an offset 100h, the first 1K locations being occupied by IVT.

A COM program keeps itsdata, code and stack segments within same segment. Because the offsets in a physical segment can be of 16 bits hence size of COM program is limited to 216 = 64K that involvesdata, code and stack. The subsequent program displays a COM program:

; Title add two numbers as well as store result and carry in memory variables.

; name of segment in this program is chosen to be CSEG


Related Discussions:- Define com programs

Explain about the history of magento?, Varien, the company that owns Magent...

Varien, the company that owns Magento, formerly worked with osCommerce. They originally planned to discontinue osCommerce but later decided to rewrite it as Magento. Magento formal

Predictive modelling power, Another useful feature of an experts system ...

Another useful feature of an experts system is its predicative modelling power. The system can act as an information processing theory or model of problem solving in th

Write a program to check give word is a palindrom or not, Write a program t...

Write a program to check whether a given word is a palindrome or not? # include # include void main() { char word[10]; int length=0,mid,count=0; clrscr();

Generalization-specialization(DBMS), Design a generalization-specialization...

Design a generalization-specialization hierarchy for a motor vehicle sales company. The company sells motorcyles,passenger cars,vans,and buses.justify your placement of attributes

Testmanagers wizard, TestManager has a wizard that you can use to copy or i...

TestManager has a wizard that you can use to copy or import test scripts and other test assets (Datapools) from one to another.

What do you mean by underflow and overflow of data, What do you mean by und...

What do you mean by underflow and overflow of data? Underflow and overflow of data: When the value of the variable is either too long or too small for the data type to hold,

Define dynamic loading, Define dynamic loading. To get better memory-sp...

Define dynamic loading. To get better memory-space utilization dynamic loading is used. With dynamic loading, a routine is not loaded unless it is called. All routines are kept

Invariant of the class, What are the conditions that have to be met for a c...

What are the conditions that have to be met for a condition to be an invariant of the class? Ans) ? The condition should hold at the end of each constructor. ? The conditi

Explain isdn address structure and its working, Draw the ISDN address struc...

Draw the ISDN address structure and explain how the addressing works? Address Structure: The ISDN address structure is demonstrated in figure. ISDN number part has a maximum

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