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 dynamic random access memory, What is dynamic random access memory ...

What is dynamic random access memory Computer memory today comprises mainly of dynamic random access memory (DRAM) chips which have been built into multi-chip modules that are

Coupling and cohesion, Coupling and cohesion can be shown using a:- Dep...

Coupling and cohesion can be shown using a:- Dependence matrix

Advantages and disadvantages of mealy - moore state machine, What are the a...

What are the advantages and disadvantages of Mealy and Moore state machine? Advantage and Disadvantage of Mealy and Moore state machine: In Mealy as the output variable is a

Prior conditions - logic programs, Prior Conditions - Logic programs: ...

Prior Conditions - Logic programs: However firstly there we must make sure that our problem has a solution. Whether one of the negative examples can be proved to be true from

When the divide overflow is generated, Divide overflow is generated when ...

Divide overflow is generated when  (A) Sign of the dividend is dissimilar from that of divisor.  (B) Sign of the dividend is same as that of divisor.  (C) The first part

Program size for different instruction set approaches, Q. Program size for ...

Q. Program size for different Instruction Set Approaches? Assumptions: Complex Instruction is: Add C, A, B having 16 bit addresses and 8 bit data operands All opera

What is python?, Python is an interpreter, interactive, object-oriented pro...

Python is an interpreter, interactive, object-oriented programming language. It is frequently compared to Tcl, P e r l, Scheme or Java. Python combines remarkable power with v

why doesn''t c have nested functions, It's not trivial to execute nested f...

It's not trivial to execute nested functions such that they have the proper access to local variables in the having function(s), so they were deliberately left out of C as a simpli

Knowledge representation - artificial intelligence, Knowledge Representatio...

Knowledge Representation: To recap, we now have some characterizations of "AI", that when an "AI" problem arises, you will be able to put all into context exactly, find the co

Explain about microcomputers, Q. Explain about Microcomputers? Microco...

Q. Explain about Microcomputers? Microcomputers: A microcomputer's CPU is a microprocessor. They are characteristically used as single usercomputer though present day microco

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