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

Nanoprogramming - computer architecture, Nanoprogramming:  Second c...

Nanoprogramming:  Second compromise: nanoprogramming  it use a 2-level control storage organization  Top level is a vertical format memory  Output of the top level

Define the example client-server implementations, Define the Example Client...

Define the Example Client-server Implementations Once you accept the client-server mindset, the process of architecting and developing applications becomes rather easy. Clearly

What is expansion swap, What is Expansion swap? At the time when any pr...

What is Expansion swap? At the time when any process needs more memory than it is currently allocated, the Kernel performs Expansion swap. To do this Kernel reserves enough spa

Describe data transfer instructions, Q. Describe Data Transfer Instructions...

Q. Describe Data Transfer Instructions? These instructions transfer data from one location in the computer to another location without altering the data content. Most common tr

The need of parallel computation, The Need Of Parallel Computation With...

The Need Of Parallel Computation With the advancement of computer science (CS), computational speed of the processors has also improved many a time. Moreover, there is certain

What is meant by questionnaires, What is meant by Questionnaires This ...

What is meant by Questionnaires This includes sending out questionnaires to the work force or/and to customers to find out their views of existing system and to find out how.

For what CIDR stands, CIDR stands for? CIDR stands here for Classless I...

CIDR stands for? CIDR stands here for Classless Inter Domain Routing.

Cookies, basic purpose of cookies

basic purpose of cookies

Define opcode and operands, Q. Define Opcode and Operands? The most com...

Q. Define Opcode and Operands? The most common fields which are found in instruction formats are: Opcode: (What operation to perform?)  An operation code field cal

Define the identifiers of c language, Define the Identifiers of c language?...

Define the Identifiers of c language? In C the names of the functions, variables and arrays and various other user - defined items are called identifiers. The first character o

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