sasdallas / os-fixed

This is pritamzope's OS with a few bug fixes.

OS

Simple Operating System programs starting from Bootloader in assembly to Kernel in C, and other programs like OS Calculator, Low Level Graphics etc.

Kernel contains C programs for Simple HelloWorld, Keyboard I/O etc... and little bit assembly programs for low level operations.

VGA contains C kernel and assembly program for seeting up Video Graphics Array(VGA) and drawing some basic shapes by ploting pixels.

Tic-Tac-Toe a simple tic-tac-toe DOS game with boxes, Pong-Game using graphics

Requirements :-

(install following packages using apt-get)

1. GNU/Linux :- Any distribution
   
2. make :- make utility
   
3. Assembler :- NASM Assembler(nasm)
   
4. GCC :- GNU Compiler Collection, C compiler
   
5. xorriso :- A package that creates, loads, manipulates ISO 9660 filesystem images.(man xorriso)
   
6. grub-mkrescue :- utility to make ISO image
   
7. QEMU :- Quick EMUlator to boot our kernel
   
8. VirtualBox :- A full graphical virtual environment

$ sudo apt-get install make nasm gcc xorriso qemu qemu-system-x86 qemu-system-i386 virtualbox

NEW KERNEL

A new modified source code has been added to "NEW KERNEL" directory. Compilation scripts are replaced with Makefile. Assembly code is replaced with NASM assembly rathen than GNU AS.

Order

  1]   Console
  2]   GDT
  3]   IDT
  4]   TSS
  5]   Keyboard
  6]   Terminal
  7]   Timer
  8]   Mouse
  9]   FPU
10]   Memory Info
11]   Physical Memory Manager
12]   KHeap
13]   Paging
14]   ATA read/write
15]   BIOS 32
16]   VGA
17]   VESA VBE
18]   Bitmap Text