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 do we need registers, Why do we need Registers? If t cpu is cycle...

Why do we need Registers? If t cpu is cycle time of CPU which is the time taken by CPU to execute a well-defined micro-operation employing registers and t mem is memory cycl

Floating point format, consider the 8 bit floating point format including s...

consider the 8 bit floating point format including support for normalised nimbers and nonnumeric values.it included 3 bits for mantissa and 4 bitys for excess 7 exponent

Nature of intelligence, From the early AI pioneering stage the research ...

From the early AI pioneering stage the research emphasis has been on developing machines with intelligent behaviour. Machine intelligence however is hard to achieve. Some

Why we need the need of parallel computation, THE NEED OF PARALLEL COMPUTAT...

THE NEED OF PARALLEL COMPUTATION   With the growth of computer science, computational pace of the processors has also increased many a times. Though, there are definite constr

Polishing game, Byteland county is very famous for luminous jewels. Luminou...

Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of various luminous jewels of particular colour. Nec

What are the features of prom, What are the features of PROM? They are ...

What are the features of PROM? They are programmed directly by the user. Faster Less expensive More Flexible

What is load testing, Load testing is to test that if the application works...

Load testing is to test that if the application works well with the loads that result from large number of concurrent users, transactions and to verify whether it can handle peak u

Asp.net mvc over asp.net webforms, What is the greatest benefit of using as...

What is the greatest benefit of using asp.net mvc over asp.net webforms? Ans) It is complex to unit test UI with webforms, where views in mvc can be very simply unit tested.

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