This should be a complete list of Atari "CX" accessories, two or three digit
numbers, and "KX" accessories, four digit numbers, marketed for or usable with
the 8-bit computers.

Controllers marketed by Atari for the 2600 and/or 7800 also work on the 8-bit
computers.

CX10 Joystick PCB replacement
CX11 Joystick plastic insert replacements
CX12 Joystick cable replacement
CX20-01 Pair of Driving Controllers. One controller per plug.
        Used by Indy 500 for 2600
CX21 Video Touch Pad for 2600 Star Raiders. Compatible w/ CX23 and CX50.
CX22 (Pro-Line) Trak-Ball. Works in joystick or trackball modes. Round buttons.
     The trackball controller from the Atari Consumer Division (2600/7800).
     Various stylings (after the black 2600), functionally identical:
       1) "Atari 2600 Trak-Ball": cream ball, black top, black buttons, black
          label beneath ball with black lettering, black bottom.  (Rare?)
       2) "Atari 2600 Pro-Line Trak-Ball": cream ball, black top, black
          buttons, black label beneath ball with silver lettering, black
          bottom.  (Rare?)
       3) "Atari Trak-Ball": black ball, black top, black buttons, black label
          beneath ball with silver lettering, white bottom.  (Rare?)
       4) "Atari Trak-Ball": cream ball, black top, black buttons, black label
          beneath ball with silver lettering, white bottom.  (COMMON)
CX23 Kid's Controller.  Used by 2600 Sesame Street titles.
     Compatible w/ CX21 and CX50
CX24 (Pro-Line / Deluxe) Joystick
CX30-04 Pair of Paddles
CX40 Joystick Controller (single)
CX40-04 Pair of Joystick Controllers
CX41 Joystick Repair Kit
CX42 Remote Control Wireless Joysticks
     (requires XEP80/SX212/2600 power adapter)
CX43 (Pro-Line) Space Age Joystick
CX50 Keyboard Controller Pair. Compatible w/ CX21 and CX23
CX70 Light Pen (beige; the rare original Atari light pen)
CX75 Light Pen and AtariGraphics (cartridge)
CX77 Touch Tablet With AtariArtist software (cartridge) + DOS 2.0S (disk)
CX78 Joypad Controller (not in USA)
CX80 Trak-Ball.  Works in joystick or trackball modes.  Triangular buttons.
     The trackball controller from the Atari Home Computer Division.
     XL computer styling: black ball, black top, black buttons, silver label
     above ball with black "Atari Trak-Ball" lettering, white or black bottom
     2 versions, externally identical:
       1) Trackball mode in earlier-production CX80's is compatible with the
          trackball mode of the CX22 Trak-Ball.
       2) Trackball mode in later-production CX80's is NOT compatible with the
          trackball mode of the CX22 Trak-Ball, but IS compatible with the
          Atari ST Mouse.
CX81 Atari I/O Data Cord
CX82 B & W Monitor Cable
CX85 Numerical Keypad ( + software Handler on diskette)
CX86 Printer Cable (included with 825 Printer)
CX87 Modem Cable (included with 830 Acoustic Modem)
CX88 Terminal Cable (null modem)
CX89 Color Monitor Cable
CX405 PILOT Educator's Kit
CX418 The Home Manager Kit (The Home Filing Manager disk +
       (Personal Financial Management System disk or Family Finances disk))
CX419 The Bookkeeper Kit/The Atari Accountant (The Bookkeeper disk + CX85)
CX481 The Entertainer (Star Raiders + (Computer Chess(?) or Missile Command or
      Pac-Man) + 2 joysticks).  Atari computer product catalogs first mention
      Missile Command, then Pac-Man as the second game.  Text on the box
      itself (thanks Bill Demian) indicates Computer Chess as the second
      game.  The illustration on the box actually shows a Music Composer box
      underneath the Star Raiders box.
CX482 The Educator (410 + BASIC cart. + States & Capitals cassette)
CX483 The Programmer (BASIC + BASIC Ref Manual + BASIC Self-Teaching Guide)
CX484 The Communicator (850 Interface + 830 Acoustic Modem + TeleLink I cart)
CX488 The Communicator II (835 Direct Connect Modem + TeleLink II cart.)
CX852 8K RAM Memory Module (for 800 computer)
CX853 16K RAM Memory Module (for 800 computer)
KX7079 Logo Kit
KX7099 The BASIC Tutor I (Inside Atari BASIC book + An Invitation to
       Programming 2: Writing Programs One and Two cassette + An Invitation to
       Programming 3: Introduction to Sound and Graphics cassette)
       http://www.rhod.fr/ataripics/basictutor.jpg
KX7102 The Arcade Champ (Pac-Man + Qix + 2 joysticks + cartridge storage case)
       http://www.rhod.fr/ataripics/arcade_champ.jpg
KX7110 AtariWriter System (600XL + 1027 + AtariWriter)
       http://www.rhod.fr/ataripics/hardwarewriterpackkompleet.jpg
KX7114 Programming System (800XL + 1010)
       http://www.rhod.fr/ataripics/8001010.JPG
KX7400 Game Kit (Donkey Kong cart. + two (standard) Atari Joysticks)
       http://www.rhod.fr/pages/atari/kx7400.html

Other:
G1 Light Gun ( + Bug Hunt cart. for 7800/2600)
XG-1 Light Gun ( + Bug Hunt cart. for XE)
Track & Field Controller