explain Debug program in assembly language , Basic Computer Science

Assignment Help:
To make a program in assembler two choices exist, the earliest one is to use the TASM or Turbo Assembler, of Borland, and the next one is to use the debugger, generally we use this last one since it is found in any PC with the MS-DOS, which creates it available to any user who has access to a machine with these features.
Debug can only make files with a .COM extension, and because of the features of these kinds of programs they cannot be larger than 64 kb, and they also must begin with displacement, offset, or 0100H memory direction within the specific segment.
Debug gives a set of commands that lets you perform a number of helpful
operations:
A Assemble symbolic instructions into machine code
D Display the contents of an area of memory
E Enter data into memory, beginning at a specific location

R Display the contents of one or more registers
G Run the executable program in memory
N Name a program
P Proceed, or execute a set of related instructions
Q Quit the debug program
T Trace the contents of one instruction
U Unassembled machine code into symbolic code
W Write a program onto disk
It is achievable to visualize the values of the internal registers of the CPU using the Debug program. To start working with Debug, kind the following prompt in your computer:
C :/> Debug [Enter]
On the next line a dash will come out, this is the indicator of Debug, at this instant the instructions of Debug can be introduced using command as follows:
-r [Enter]
AX=0000 BX=0000 CX=0000 DX=0000 SP=FFEE BP=0000 SI=0000 DI=0000
DS=0D62 ES=0D62 SS=0D62 CS=0D62 IP=0100 NV EI PL NZ NA PO NC
0D62:0100 2E CS:
0D62:0101 803ED3DF00 CMP BYTE PTR [DFD3],00 CS:DFD3=03
The complete content of the internal registers of the CPU are displayed; an
alternative of viewing them is to use the "r" command by means of as a parameter
the name of the register whose value wants to be seen. for instance:
-rbx
BX 0000
:
This instruction will only display the content of the BX register and the Debug indicator changes from "-" to ":"

Related Discussions:- explain Debug program in assembly language

Knowledge of the environment of ai system, Knowledge of the Environment ...

Knowledge of the Environment We must distinguish between knowledge an agent receives through it's sensors and knowledge about the world from which the input comes. Knowledge a

Multi-valued attribute dbms, Multi-valued Attribute DBMS Each multi valued ...

Multi-valued Attribute DBMS Each multi valued attribute maps into a separate table. Include also an attribute for the primary key of the entity and relationship type which the attr

Need a help, i am currently studying my computer science engineering 2nd yr...

i am currently studying my computer science engineering 2nd yr. i am unable to select what specification should i take please help me

Mis, #questionexplain strategic mis categories in detail with illustration....

#questionexplain strategic mis categories in detail with illustration..

Objectives of laboratory organisation and management, Objectives When y...

Objectives When you have completed all the work in this unit you should be able to: List the basic components of a personal computer system, 1. describe the use of comput

Netbooks, Netbooks: Netbooks are special type of Laptop which is very ...

Netbooks: Netbooks are special type of Laptop which is very  light and small. Due to its size and weight it is very portable and one may carry it very easily. Dissimilar to La

ASSIGNMENTS, A STAIRCASE LIGHT IS CONTROLLED BY TWO SWITCHES ONE AT THE TOP...

A STAIRCASE LIGHT IS CONTROLLED BY TWO SWITCHES ONE AT THE TOP OF THE STAIRS AND ANOTHER AT THE BOTTOM OF STAIRS

Transmission media, TRANSMISSION MEDIA: When we speak of transmission ...

TRANSMISSION MEDIA: When we speak of transmission media, we usually mean a mix of physical lines ranging from wire pairs to cable, and over the air transmission media, such as

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