4.0GB 4mm Tape Drive SCSI - SWITCHES
   ____________________________________
  | Addr  Switch3 | Switch2 | Switch1 |
  |______|_________|_________|_________|
  |  0   |   Off   |   Off   |   Off   |
  |  1   |   Off   |   Off   |   On    |
  |  2   |   Off   |   On    |   Off   |
  |  3   |   Off   |   On    |   On    |
  |  4   |   On    |   Off   |   Off   |
  |  5   |   On    |   Off   |   On    |
  |  6   |   On    |   On    |   Off   |
  |______|_________|_________|_________|

     ______________________________
    | OFF  _  _  _  _  _  _  _  _  |
    |     | || || || || ||X|| || | |
    |  ON |X||X||X||X||X||_||X||X| |
    |_____________________3__2__1__|