Assignment #3 Solved

Description

Objective: Learn memory organization/layout, data transfer concepts and instructions, direct memory access, memory allocation.

Requirements:

1. (5 points) Use a loop instruction with indirect addressing to solve the problem.

1. • Do not copy the elements to any other array.

   • Use the LOOP and XCHG instruction.

   • The input array, inputStr contains elements: “A”, “B”, “C”, “D”, “E”, “F”, “G”, “H”.

   • The array’s elements after running the program should look like: “G”, “H”, “E”, “F”, “C”, “D”, “A”, “B”. o Submit the following:

1. • • Rename the asm file using your last name as Lastname1.asm

     • Screenshot of the code and memory window showing the content of the variable inputStr.

2. (5 points) Write an assembly program that does the following:

1. • Define the following value 0506-0307-0408-0102h in the .data segment using the 64-bit unsigned identifier named qVal.

1. • You can subdivide the qVal value into 4 words – 0506, 0307, 0408, 0102

1. • Extract these words from qVal using PTR operator.

1. • Find the sum of the words. The sum should be D17h.

1. • Store the result in any 16-bit register.

1. • The direction of adding two words goes from left to right. o Submit the following:

     • • Rename the asm file using your last name as Lastname2.asm

       • Screenshot of the code and memory window showing the result in a 16-bit register.

3. (5 points) Consider the following code:

if (var1 > var2) OR (var3 < var2){ var1 = var2 + var3;

var2++;

var3++;

}

else{ var1–; var2–; var3–;

}

Here var1, var2 and var3 are DWORD variables.

var1 is initialized with 10 (decimal), var2 is initialized with 11(decimal) and var3 is initialized with 12 (decimal).

Translate the following code in assembly code (MASM).

You need to implement the logic of the if-else statement with compound condition.

Note:

• Comment header for .ASM files: Student: Full name Class: CSC3210 Assignment#: 3

Description: This program ………….

• Follow the program standards as presented in your book. Pay more attention to code comments and

consistent indentation.

• Create a new project for every question. Do not use one project with multiple .asm files.