My own Operating System

kfs-1 - Grub, boot and screen (finished)

• make a kernel, bootable with GRUB, who can write characters on screen
• code the interface between your kernel and the screen
• display "42" on the screen

Bonus

• Add scroll and cursor support to your I/O interface.
• Add colors support to your I/O interface.
• Add helpers like printf / printk in order to print information / debug easily.
• Handle keyboard entries and print them.
• Handle different screens, and keyboard shortcuts to switch easily between then. - change F1-F3

kfs-2 - GDT & Stack (finished)

• create a Global Descriptor Table and set GDT at address 0x00000800

Bonus

• simple Shell class (reboot, halt, stack, shutdown, clear, help)

kfs-3 - Memory

• reading theory

kfs-4 - Interrupts (finished)

• Create an Interrupts Descriptor Table, fill it and register it
• A signal-callback system on your Kernel API
• An interface to schedule signals
• An interface to clean registers before a panic / halt
• An interface to save the stack before a panic

Bonus

• Syscalls
• multi keyboard (qwerty, azerty) - change F4
• get_line function (my_screen->get_buffer)

Sources

• materials

https://wiki.osdev.org/Main_Page
https://www.gnu.org/software/grub/manual/multiboot/multiboot.html
https://littleosbook.github.io/
https://github.com/littleosbook

• video tutorials with explanations

https://www.youtube.com/@writeyourownoperatingsystem
https://www.youtube.com/@nanobyte-dev

Resourse

• QEMU with GDB : qemu-system-i386 -kernel mykernel.bin -monitor stdio
• QEMU with debugger: qemu-system-i386 -kernel mykernel.bin -d cpu,memory,...