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

What is process, In Windows, Thread is a unit of implementation. Process is...

In Windows, Thread is a unit of implementation. Process is the environment in which thread implements. Scheduler, schedules the Threads not the process. In Unix variants, Thread is

Compute minimum value of the horizontal force, Compute minimum value of the...

Compute minimum value of the horizontal force: Block A of weight 520N rest on horizontal top of block B having weight of 700N as shown in the figure given below. Block A

What is virtual memory, Virtual Memory is a way of extending a computer's m...

Virtual Memory is a way of extending a computer's memory by using a disk file to replicate add'l memory space. The OS remain track of these add'l memory addresses on the hard disk

Basic working of semiconductors, Q. Basic working of Semiconductors? Se...

Q. Basic working of Semiconductors? Semiconductors are crystalline solid materials whose resistivities have values between those of conductors and insulators. Conductivity rang

How can we draw a circle with gimp, Ans) The simplest way is to make a new ...

Ans) The simplest way is to make a new selection with Ellipse Select tool and stroke it (Edit -> Stroke Selection...). We welcome patches that add tools to draw geometric primitive

Predicates - first-order logic, Predicates - first-order logic: First ...

Predicates - first-order logic: First and foremost in first-order logic sentences, because predicates. Hence the indications of that some things are related in some way. So af

Operating system, define request edge and assignment edge

define request edge and assignment edge

create a class called auditorium, Create a class called auditorium that sp...

Create a class called auditorium that specifies the seats in the auditorium. The class should include at least one data item: seat (two dimensional array of Char) and at least thre

Define hyperlinks, Q. Define Hyperlinks? Hyperlinks, or links are one o...

Q. Define Hyperlinks? Hyperlinks, or links are one of the most significant characteristics of web pages. A link moves us from current page to a destination which is specified i

Define multi programming, Define multi programming? Many operating syst...

Define multi programming? Many operating systems are designed to enable the cpu to process a number of independent programs concurrently. This concept is  known as multi progra

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