* TODO [7/12]
  + [X] VGA CRTC driver
  + [X] PIC
  + [ ] PIT
  + [X] PS/2 keyboard driver
  + [X] Access ACPI tables
  + [X] Detect PCI(e) devices
  + [-] IDE driver [1/2]
    + [X] Read
    + [ ] Write
  + [ ] Read FAT12 filesystem
  + [X] Physical memory manager
  + [ ] Paging
  + [X] Switch to usermode
  + [X] Syscalls
  + [ ] Read and load ELF binaries