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

Why gateways are used during mail transfer, Why Gateways are used during ma...

Why Gateways are used during mail transfer? Email using SMTP effort best while both the sender and the receiver are on the internet and can hold TCP connections in between send

Fibre optics, #questifind core radius for single mode operation at 850nm in...

#questifind core radius for single mode operation at 850nm in SI fibre with n1=1.480 & n2=1.47 what is NAon..

Define rotational latency and disk bandwidth, Define rotational latency and...

Define rotational latency and disk bandwidth. Rotational latency is the additional time waiting for the disk to rotate the desired sector to the disk head. The disk bandwidth i

Input output in assembly program, Q. Input output in assembly program? ...

Q. Input output in assembly program? Software interrupt is a call to an Interrupt servicing program situated in the operating system. Generally the input-output routine in 8086

Explain the structure of plasma panel display, a. Explain the meaning of fr...

a. Explain the meaning of frame buffer? Draw a block diagram showing the method for scanning out an image from frame buffer to display surface. b. Explain the structure of plasm

Explain vector processing with pipelining, Vector Processing with Pipelinin...

Vector Processing with Pipelining Because in vector processing vector instructions execute the similar computation on various data operands repeatedly, vector processing is the

What is guard bits, What is guard bits? Guard bits are extra bits which...

What is guard bits? Guard bits are extra bits which are produced while the intermediate steps to yield maximum accuracy in the final results.

C program, a c program to implement multiple stack in a single array

a c program to implement multiple stack in a single array

Options with dir in dos, Q. Options with DIR in DOS? You can use a numb...

Q. Options with DIR in DOS? You can use a number of options with DIR. To get the list of files from any other drive, denote the drive name followed by ':' with DIR. For exam

Registered ports, A) What does this file have? Where was the information in...

A) What does this file have? Where was the information in this file acquired from? What is the information in this file used for? B)  What is the range for popular ports? What i

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