PAW_OS

TABLE OF CONTENTS

• Description
• Dependencies
• Build Instruction
  • For Emulator
  • For Real Hardware
• Current Progress
• Planning Features

Description

This is demo operating system that boots up and displays a logo and echoing keystrokes to the screen. Nothing usefull for now. Currently the project is mainly targets the old bios style boot systems not UEFI/EFI. (Although you can boot it using legacy mode support in UEFI systems)

Dependencies

• nasm (Assembler)
• gcc (C Compiler)
• ld (Linker)

Build Instruction

I highly recommend to run it in a emulator such as qemu or bochs as it may not work in real hardware.

For Emulator

Just use the included makefile to build the os_image. Use that as in any emulator to run it.

make

For Real Hardware

1. First blank make a ISO file (If using linux you can use dd to create it)
2. Make a mbr partition table/scheme and a partition use fdisk to create a mbr partition table and a partitiom

3.

dd if=objs/boot_loader.bin of=<The ISO File> conv=notrunc bs=440 count=1 # Skip the mbr partitiom
dd if=objs/boot_loader.bin of=<The ISO File> conv=notrunc bs=1 count=2 skip=510 seek=510 # The preserve the magic number
dd if=objs/kernel.bin of=<The ISO File> conv=notrunc bs=1 seek=512 status=progress  # Add the kernel
sudo dd if=<The ISO File> of=<Your Flash Drive> status=progress # Burn the ISO File in the flash drive

Current Progress [73%]

• [X] Load the bootloader
• [X] Read the sectors from harddrive
• [X] Switch to a graphics mode
• [X] Enter Protected Mode
• [X] Load the Kernel
• [X] Bitmap font rendering
• [X] Setup IDT
• [X] Setup ISR(Interrupt Service Routine)s
• [X] Setup and Initialize the PIC
• [X] PS2 Controller Driver Implementation
• [X] Functional PS2 keyboard driver
  • [X] Translate the scancodes from keyboard to ascii characters
• [-] PCI Driver
• [ ] AHCI Controller Driver
• [ ] File System
• [ ] Shell

Planning Features

• Use VBE(Vesa Bios Extensions) to get a more proper resolution
• ACPI
• PCI-E Support
• Support for USB devices