This chapter covers the interface hardware through which the Amiga talks
to the outside world, including the following features:

  * Two multiple purpose mouse/joystick/light pen control ports
  * Disk controller (for floppy disk drives & other MFM and GCR devices)
  * Keyboard
  * Centronics compatible parallel I/O interface (for printers)
  * RS232-C compatible serial interface (for external modems or other
      serial devices)
  * Video output connectors (RGB, monochrome, NTSC, RF modulator, video
      slot)

 controller port interface      serial i/o interface 
 floppy disk controller         parallel i/o interface 
 the keyboard                   display output connections