Felix 0.4.0

Bootloader

• boots (you don't say!)
• BIOS compatible (also works on UEFI with CSM enabled)
• Global Descriptor Table loading
• Unreal Mode switching (to use 32bit addresses in 16bit Real Mode)
• kernel copying from disk to protected memory
• 32bit Protected Mode switching
• kernel jumping

Kernel

• Interrupt Descriptor Table loading
• CPU exceptions handler
• Programmable Interrupt Controller driver
• keyboard driver
• ATA disk driver
• FAT16 filesystem file read
• timer interrupt driven CPU scheduler
• prints system call that writes to VGA text buffer
• task manager
• round robin CPU scheduler

Shell

Available commands:

• help shows available commands
• ls lists root directory entries
• cat displays content of a file
• test tests CPU scheduler with dummy tasks
• run loads file as task and adds it to the task list
• ps lists running tasks
• rt removes specified task

libfelix (standard library)

• print! macro able to print formatted text to screen

How to run

Run it in QEMU using qemu-system-i386 -drive file=disk.img,index=0,media=disk,format=raw,if=ide

Felix 0.3.1

Bootloader

• boots (you don't say!)
• BIOS compatible (also works on UEFI with CSM enabled)
• Global Descriptor Table loading
• Unreal Mode switching (to use 32bit addresses in 16bit Real Mode)
• kernel copying from disk to protected memory
• 32bit Protected Mode switching
• kernel jumping

Kernel

• print! macro able to write formatted text to VGA text buffer
• Interrupt Descriptor Table loading
• CPU exceptions handler
• Programmable Interrupt Controller driver
• keyboard driver
• shell
• ATA disk driver
• FAT16 filesystem file read

Run it in QEMU using qemu-system-i386 -drive file=build/disk.img,index=0,media=disk,format=raw,if=ide

Felix 0.2.0

Bootloader

• boots (you don't say!)
• BIOS compatible (also works on UEFI with CSM enabled)
• loads a basic Global Descriptor Table
• switches to Unreal Mode (to use 32bit addresses in 16bit Real Mode)
• copies kernel from disk to protected memory
• switches to 32bit Protected Mode
• jumps to kernel

Kernel

• prints formatted text to screen by writing to VGA text buffer
• loads a basic Interrupt Descriptor Table
• has a basic handler for CPU exceptions

Run it in QEMU using qemu-system-i386 -drive id=disk,file=build/disk.img,if=none,format=raw -device ahci,id=ahci -device ide-hd,drive=disk,bus=ahci.0

Felix 0.1.0

Bootloader:

• BIOS compatible (also works on UEFI with emulated BIOS)
• can boot
• can load kernel to memory
• can execute kernel

Kernel:

• has a println macro able to format any type of data

It doesn't do much but if you want to try it download the release and run it with QEMU:
qemu-system-i386 -drive file=disk.img,index=0,if=floppy,format=raw