      +------------------------------------------------------------------------
      |
      |      RAMLINK - REGISTER DESCRIPTIONS
      |
      +------------------------------------------------------------------------
      |
      |  Registers:
      |
      |   $DF7E/57214    Activate Hardware
      |   $DF7F/57215    Deactivate Hardware
      |
      |   Select page from internal RAM area (see $DFC0):
      |   $DF80/57216    Select Variables page
      |   $DF81/57217    Select DOS RAM page 0
      |   $DF82/57218    Select DOS RAM page 1
      |   $DF83/57219    Select DOS RAM page 2
      |   $DF84/57220    Select DOS RAM page 3
      |   and so on... (until $DF??)
      |
      |   $DFA0/57248    Low-Byte of requested RAMCard memory page
      |   $DFA1/57249    High-Byte of requested RAMCard memory page
      |
      |   $DFC0/57280    Show internal RAM page at $DE00 (default)
      |   $DFC1/57281    Show RAMCard memory page at $DE00
      |   $DFC2/57282    Show RAM Port device IO1 at $DE00
      |   $DFC3/57283    Show Pass-Thru Port device IO1 at $DE00
      |
      +------------------------------------------------------------------------