qnos

QNOS Development Doc

Introduction

QNOS is a 32-bit operating system running
on i386 chips!

What was finished?

1. Boot with grub or grub2
2. Paging & Buddy & slab memory management
3. Kernel Module Dynamic Loader(.so)
4. Multitask & Schedule
5. VFS Framework(iso9660 fat32 ...)
6. Devices enuming (in /dev directory)
7. Basic user-programe library

What's the next?

1. Support more filesystem and devices
2. IPC
3. ...

How to Compile it

1. Clone the source code

2. Check the compiling environment

(better in linux) gcc binutils make xorriso 

3. Build Toolchains

make tool

4. Build Kernel

make all

5. Build Userprograms

make sys

6. Make ISO Image

make iso

7. Run it on VMWare and have fun!

NOTE: it cannot run on qemu properlly Because the bad ata drivce

Screen Shots

• List directories use command 'ls'
• List /dev directory(a virtual directory for devices)
• List all processes with their states
• Test 'fork' function in userland
• 1st userprogram It 'mmap' /dev/fb0 to directly operate the vga buffer to draw a 'bar'
• 2nd read a text file and render it on the screen
• 3rd userprogram: A Lisp-like language interpreter