Text-mode VGA
CONFIG_VGA_ENABLE
  Say Y here to enable a simple text-mode VGA controller. The controller
  generate 48x36 characters on a 640x480 pixel screen. The pixel clock
  is 25 MHz.

SVGA frame buffer
CONFIG_SVGA_ENABLE
  Say Y here to enable a graphical frame buffer. The frame buffer
  can be configured up to 1024x768 pixels and 8-, 16- or 32-bit 
  colour depth. 

PS2 KBD interface
CONFIG_KBD_ENABLE
  Say Y here to enable a PS/2 keyboard or mouse interface.

