User Account

All Pages

assembly language, Basic Computer Science

Assignment Help:
Questions
1) Polynomial Integrals
Problem: Write an X86-series assembly language program that calculates and prints out (in a nice form) the indefinite
integral of a simple polynomial.
Sample Execution: A sample execution of the program looks like the following.
Enter degree of polynomial: 2
Enter coefficient of xˆ2: 6
Enter coefficient of xˆ1: -14
Enter coefficient of xˆ0: 0
The polynomial entered is
6*xˆ2+-14*xˆ1
The indefinite integral is
2*xˆ3+-7*xˆ2+C
Indefinite Integral: The indefinite integral of a polynomial is easy to calculate. The integral of any polynomial is the
sum of the integrals of its terms. So, each term in the indefinite integral of the polynomial is calculated separately.
For a term in the polynomial axn, its indefinite integral is

axndx = a
xx+1
n + 1
+ C.
Examples:
1. The indefinite integral of -12x5 + 12x3 + 24x2 is -2x6 + 3x4 + 8x3 + C.
2. The indefinite integral of 5x4 + 48x3 + 6x1 is x5 + 12x4 + 3x2 + C.
Requirements:
• Legal input will be 1 or more digits (0-9), optionally preceded by a sign (+ or -). Hitting enter on the keyboard
ends the legal input. Assume all input is correct (do not do error checking on the input).
• The maximum degree of the polynomial is 5. Again, assume all input is correct.
• The following procedures/functions must be implemented and used:
– get poly: a procedure that gets and places in an array the coefficients of the user entered polynomial. The
input parameter to the procedure is the address of the array (in memory). This procedure calls function
get int to get the coefficients from the user.
– put poly: a procedure that prints out a polynomial in a nice form. The input parameter to the procedure
is the address of the array containing the polynomial. This procedure calls print int to print out the
coefficients of the polynomial.
– get int: a function to get an integer. The single parameter to this procedure is the address of an integer
variable. The function uses the address as the location to place the integer it gets.
– print int: a procedure which prints out an integer passed to the procedure.
– integral: a procedure that calculates the indefinite integral. The procedure receives one parameter, the
address of the array containing the coefficients.
– Comment your program appropriately. Every procedure/function needs a header stating its function and
its input/output parameters.
Hints:
• Limiting ourselves to polynomials of degree 5 (with integer coefficients) helps to make implementation of the
program straight forward. Use a 6 element array of integers to hold the coefficients of the polynomial terms.
Furthermore, the array index (starting with 0) is the degree of the term.
• A good place to start with with get poly and put poly. Then implement the integral procedure.




2) Binary Bomb
Problem: You are each assigned (see Table 1) a “binary bomb” included with this assignment. When run, it will
prompt you to enter a string. If the string is incorrect, the bomb explodes, printing an error message to the screen.
You are to use Microsoft’s debug.exe (or any debugger of your choice) to discover the string that will defuse your
particular bomb. Note, I have used a simple encryption on the string to ensure you cannot simply open the exe in
Notepad to get the solution.

You must also discover the effective address of the string in memory. Recall, that the DS register stores the
starting address of the data segment in memory, and an offset specifies the address relative to the DS register. This
offset is also referred to as the effective address. It is the effective address that is, for example, loaded when you
perform the following:
data segment
str1 db ’This is string #1$’
str2 db ’This is string #2$’
.
.
.
lea si, str2
The above code will load the offset into register si. In this case it would be 18 (12h) since there are 18 bytes assigned
to str1.
Hints:
• You know already know the DOS routine to output a string to the command line, use this to orientate yourself in
the disassembly. Similarly, I use INT 21, A to input a string from the user (see INT 21 DOS Function Dispatcher).
This will also help you to orientate yourself in the code. Finally, I output a carriage return and a new line feed
once the user has entered the string.
• I would find the place in the code where the first character of the string you entered is manipulated. Once
you find this, you can identify the method used to encrypt the characters in the string. From here, it should
be straight forward processes to find the password. Simply reverse the encryption process and start reading
characters

Related Discussions:- assembly language

Java - Stack and Queue, Consider a class called Configuration. This class “...

Consider a class called Configuration. This class “encapsulates” the configuration management for any software system. For example, once created, the user can simply ask the config

Immediate addressing, These addressing modes are: With immediate addressing...

These addressing modes are: With immediate addressing, no lookup of data is essentially required. The data is located in the operands of the instruction itself, not in a different

Design problem, Design Problem 1. Implement a basic file system managed fr...

Design Problem 1. Implement a basic file system managed from within a file. The file system should have the following capabilities: i. List files stored along with their sizes.

Digital logic design, encoder

encoder

Operating systems, Operating Systems: The operating system is the soft...

Operating Systems: The operating system is the software that mediates between the applications programs and a level of instructions nearer to the machine's operations. In othe

Python - Dictionary, A dictionary is variable and is one more container typ...

A dictionary is variable and is one more container type that can store any number of Python objects, counting other container types. Dictionaries consist of pairs (identified items

Explain Modern architecture of microprocessor, There are many other techniq...

There are many other techniques in which companies who manufacture microprocessors have attempted to get better the performance of their CPUs. Cache memory this is a small quantit

Disk output, Disk output : You will already have decided whether to u...

Disk output : You will already have decided whether to use a hard disk or floppies for storing data. An important point of disk management is to ensure a secure method of kee

Syntax of a Procedure in assembly language, There are two kinds of procedur...

There are two kinds of procedures, the intrasegments, which are found on the similar segment of instructions and the inter-segments which can be stored on dissimilar memory segment

Historical background of computers, Historical Background The br...

Historical Background The brief history of the growth of computers is given below: Abacus:   It was the first mechanical device developed approximately 3,000 year

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd