Main file
Kernel/main.c 

Debug :: Console
Kernel/debug/console.c

Debug :: Console base routines
Kernel/debug/console-base.c

Debug :: Console output
Kernel/debug/console-out.c

Debug :: Console input
Kernel/debug/console-in.c

Debug :: Logger
Kernel/debug/logger.c

Drivers
Kernel/drivers/drivers.c

Drivers :: Complementary Metal Oxide Semiconductor (CMOS)
Kernel/drivers/cmos/cmos.c

Drivers :: Direct Memory Access Controller (DMAC)
Kernel/drivers/dma/dma.c

Drivers :: Floppy driver
Kernel/drivers/floppy/floppy.c

Drivers :: Programmable Interval Timer (PIT)
Kernel/drivers/pit/pit.c

HAL (Hardware abstraction layer)
Kernel/hal/hal.c

HAL :: Crash message
Kernel/hal/crash.c

HAL :: Global Descriptor Table
Kernel/hal/cpu/gdt.c

HAL :: Interrupt Descriptor Table
Kernel/hal/cpu/idt.c

HAL :: Interrupt Service Routines
Kernel/hal/cpu/isrs.c

HAL :: Interrupt Requests
Kernel/hal/cpu/irq.c

HAL :: Programmable Interrupt Controller
Kernel/hal/cpu/pic.c

HAL :: Internal clock
Kernel/hal/clock/clock.c

HAL :: Keyboard
Kernel/hal/keyboard/keyboard.c

HAL :: Mouse
Kernel/hal/mouse/mouse.c

HAL :: System
Kernel/hal/system.c

HAL :: File systems :: Virtual file system
Kernel/hal/vfs.c

HAL :: File systems :: FAT
Kernel/hal/filesys/fat/fat.c

HAL :: File systems :: FAT12
Kernel/hal/filesys/fat/fat12.c

HAL :: File systems :: FAT16
Kernel/hal/filesys/fat/fat16.c

HAL :: File systems :: FAT32
Kernel/hal/filesys/fat/fat32.c

HAL :: File systems :: Initial ram disk
Kernel/hal/filesys/initrd/initrd.c

Libraries :: Character types
Kernel/library/ctype.c

Libraries :: Standard input/output
Kernel/library/stdio.c

Libraries :: Storage
Kernel/library/storage.c

Libraries :: Time
Kernel/library/time.c

Libraries :: Arrays :: Dynamically expanding array
Kernel/library/array/dynamic_arr.c

Libraries :: Arrays :: Ordered array
Kernel/library/array/ord_arr.c

Libraries :: Memory :: Allocation
Kernel/library/memory/memory_alloc.c

Libraries :: Memory :: Free
Kernel/library/memory/memory_free.c

Libraries :: Memory :: Information
Kernel/library/memory/memory_info.c

Libraries :: Memory :: Initialization
Kernel/library/memory/memory_init.c

Libraries :: Standard library :: Convert operations
Kernel/library/stdlib/convert_ops.c

Libraries :: Standard library :: Memory operations
Kernel/library/stdlib/mem_ops.c

Libraries :: Standard library :: Number operations
Kernel/library/stdlib/num_ops.c

Libraries :: Standard library :: String operations
Kernel/library/stdlib/str_ops.c

Memory Manager :: Memory heap
Kernel/memory/mem-heap.c

Memory Manager :: Physical memory manager
Kernel/memory/mem-phys.c

Memory Manager :: Paging
Kernel/memory/mem-paging.c