README.md

ComputerOrganization 🖥️

This repository contains examples and exercises related to computer organization and low-level programming. It includes examples written in C and x86 Assembly language, demonstrating concepts such as endianness and system calls.

Contents

• BigLittleendian.c - A C program to determine the endianness of the system.
• first.asm - An x86 assembly program to print a string using DOS interrupts.

BigLittleendian.c

This C program checks whether the system is using big-endian or little-endian byte order. The program uses a union to store a short integer and a character array, then examines the byte order in memory.

Compilation and Execution

To compile and run the BigLittleendian.c program:

gcc BigLittleendian.c -o BigLittleendian
./BigLittleendian 

first.asm

This x86 assembly program prints a string to the console using DOS interrupts. It demonstrates the use of the DOS interrupt 21h to print a string and terminate the program.

Assembly and Execution

1. To assemble and run the print_string.asm program, you need an assembler like MASM or TASM, and an environment to run DOS programs like DOSBox.

masm first.asm;

2. Link the object file:

link first.obj;

3. Run the executable in DOSBox or a similar DOS environment:

first.exe

License

This repository is licensed under the MIT License. See the LICENSE file for more information.

Author

Aitya Singh