* 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