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

Database management system, what is time out based schemes in concurrency c...

what is time out based schemes in concurrency control

Random search - artificial intelligence, Random Search - artificial intelli...

Random Search - artificial intelligence: Some problems to be solved by a search agent are more creative in nature, for example, like in writing poetry. In this case, it is oft

Why process scheduling algorithm favour i/o bound processes, Suppose that a...

Suppose that a process scheduling algorithm favors those processes that have used the least processor time in the recent past. Why will this algorithm favour I/O- bound processes,

The job allocation register, Signify this problem by means of: i.    An Ent...

Signify this problem by means of: i.    An Entity Relationship model; ii.    Relational tables. Pete's Programmers is a firm which supplies part time staff on contract to organisat

Explain the semantics of each field of ethernet frame, Give the format of E...

Give the format of Ethernet frame and explain the semantics of each field. An Ethernet frame starts with headers which have three fields. The 64-bit preamble, which precedes th

C program, program for finding the area under the curve   #includ...

program for finding the area under the curve   #include float start_point, /* GLOBAL VARIABLES */ end_point, total_area; int

Define addressing modes, Define addressing modes. The dissimilar ways i...

Define addressing modes. The dissimilar ways in which the location of an operand is specified in an instruction are referred to as addressing modes.

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

Set up a standard population model structure, Set up a standard population ...

Set up a standard population model structure. The population will begin with 24 people. We do not have actual data to support a birth rate, but we could calculate a reasona

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