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  Service 10H (decimal 16) performs the same function as service 00H, but
  lets you take full advantage of the 101/102-key keyboard: It returns ASCII
  character codes and keyboard scan codes for keys that don't exist on the
  older 84-key keyboard. For example, the extra F11 and F12 keys found on
  the 101/102-key keyboard are ignored by service 00H but can be read using
  service 10H.

  Another example: On the 101/102-key keyboard, an extra Enter key appears
  to the right of the numeric keypad. When this key is pressed, service 00H
  returns the same character code (0DH) and scan code (1CH) as it does for
  the standard Enter key. Service 10H lets you differentiate between the two
  Enter keys because it returns a different scan code (E0H) for the keypad
  Enter key.