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Document Title: [Centipede Tech.html (html file)]

Centipede pinouts

Centipede pinout and switch settings

Submitted by Jonathan Deitch (jdeitch@umiami.miami.edu), John L. Cwikla (cwikla@wri.com), T. Franklin Bowen (mjrhavoc@clark.net)

Centipede Pinout

Added undocumented composite video sync and joystick pins

Game : Centipede
Note : * denotes an intverted signal
       -> denotes Cocktail
       N.C. means No Connection
       @ means not documented

Wiring List for P20:
                                |
--------------------------------|-----------------------------------
        GND                 | A | 1 |      Ground
----------------------------|---|---|-------------------------------
        + 5 V               | B | 2 |      + 5 V
----------------------------|---|---|-------------------------------
        + 12 V              | C | 3 |      + 22 V DC
----------------------------|---|---|-------------------------------
        - 5 V               | D | 4 |      - 22 V DC
----------------------------|---|---|-------------------------------
                            | E | 5 |      Center Coin Counter
----------------------------|---|---|-------------------------------
        Left Coin Counter   | F | 6 |      Right Coin Counter
----------------------------|---|---|-------------------------------
                            | H | 7 |
----------------------------|---|---|-------------------------------
        Start 1 LED *       | J | 8 |
----------------------------|---|---|-------------------------------
                            | K | 9 |      -> Fire Button 2
----------------------------|---|---|-------------------------------
        Start 2 *           | L | 10|      Fire Button
----------------------------|---|---|-------------------------------
        Start 1 *           | M | 11|      -> Tball Horiz Clock 2
----------------------------|---|---|-------------------------------
        Tball Horiz. Clock  | N | 12|      -> Tball Vert. Clock 2
----------------------------|---|---|-------------------------------
        Tball Vert. Clock   | P | 13|      Self Test *
----------------------------|---|---|-------------------------------
        Left Coin Slot *    | R | 14|      Right Coin Slot *
----------------------------|---|---|-------------------------------
        Start 2 LED *       | S | 15|      Cocktail (Tie to GND)
----------------------------|---|---|-------------------------------
        Center Coin Slot *  | T | 16|     -> Horiz. Dir. 2
----------------------------|---|---|-------------------------------
        Tball Horiz. Dir.   | U | 17|     -> Vert. Dir. 2
----------------------------|---|---|-------------------------------
        Reset (N. C.)       | V | 18|      Tball Vert. Dir.
----------------------------|---|---|-------------------------------
                            | W | 19|
----------------------------|---|---|-------------------------------
        Ground (Coin Door)  | X | 20|
----------------------------|---|---|-------------------------------
        + 5 V (Controls)    | Y | 21|      + Sense
----------------------------|---|---|-------------------------------
                            | Z | 22|      - Sense
--------------------------------------------------------------------


Wiring List for P19:
                                |
--------------------------------|-----------------------------------
                            | A | 1 |      Audio 2 Out
----------------------------|---|---|-------------------------------
                            | B | 2 |      Audio 1 Out
----------------------------|---|---|-------------------------------
                            | C | 3 |
----------------------------|---|---|-------------------------------
                            | D | 4 |      P1 Joystick Up @
----------------------------|---|---|-------------------------------
        P1 Joystick Left @  | E | 5 |      P1 Joystick Right @
----------------------------|---|---|-------------------------------
        P1 Joystick Down @  | F | 6 |      P2 Joystick Left @
----------------------------|---|---|-------------------------------
        P2 Joystick Up   @  | H | 7 |      P2 Joystick Right @
----------------------------|---|---|-------------------------------
        P2 Joystick Down @  | J | 8 |      Video Green
----------------------------|---|---|-------------------------------
        Video Red           | K | 9 |      Video Blue
----------------------------|---|---|-------------------------------
        Video Return        | L | 10|      Video Vert. Sync.
----------------------------|---|---|-------------------------------
        Video Horiz. Sync   | M | 11|
--------------------------------------------------------------------
                            | N | 12|      Video Composite Sync. @
--------------------------------------------------------------------

Centipede Switch Settings


Typed in by Dave Fish (dfish@nyx.cs.du.edu)

Centipede settings (from Document TM-182 2nd printing):

0 = OFF  1 = ON  X = Don't Care  $ = Atari suggests


8 SWITCH DIP (N9)	(CENTER switch assembly when PCB in in game)
87654321
--------
XXXXXX11   English $
XXXXXX10   German
XXXXXX01   French
XXXXXX00   Spanish

XXXX11XX   2 lives per game
XXXX10XX   3 lives per game $
XXXX01XX   4 lives per game
XXXX00XX   5 lives per game

            Bonus live granted at every:
XX11XXXX   10,000 points
XX10XXXX   12,000 points $
XX01XXXX   15,000 points
XX00XXXX   20,000 points

X1XXXXXX   Hard game difficulty
X0XXXXXX   Easy game difficulty $

1XXXXXXX   1-credit minimum $
0XXXXXXX   2-credit minimum


8 SWITCH DIP (N8)	(LEFT switch when PCB is in game)
87654321
--------
XXXXXX11   Free Play
XXXXXX10   1 Coin = 2 Credits
XXXXXX01   1 Coin = 1 Credit $
XXXXXX00   2 Coins = 1 Credit

XXXX11XX   Right coin mech * 1 $
XXXX10XX   Right coin mech * 4
XXXX01XX   Right coin mech * 5
XXXX00XX   Right coin mech * 6

XXX1XXXX   Left coin mech * 1 $
XXX0XXXX   Left coin mech * 2

111XXXXX   No bonus coins $
110XXXXX   For every 2 coins inserted, game logic adds 1 more coin
101XXXXX   For every 4 coins inserted, game logic adds 1 more coin
100XXXXX   For every 4 coins inserted, game logic adds 2 more coins
011XXXXX   For every 5 coins inserted, game logic adds 1 more coin
010XXXXX   For every 3 coins inserted, game logic adds 1 more coin


4 SWITCH DIP (N11)         Two coin acceptors and a push-
      Two coin acceptors   button utility coin sw in the  Three coin acceptors
4321   in the coin door    game (cocktail-table cabinet):  in the coin door
----
XX11        Note 1                   Note 3                    Note 6
XX10        Note 2                   Note 3                    Note 7
XX01        Note 1                   Note 4                    Note 8
XX00        Note 2 $                 Note 5                    Note 9 $

Notes:
 1 - Both acceptors activate all coin counters simultaneously.
 2 - Both acceptors activate two counters seperately.
 3 - Do not use this setting.
 4 - Utility coin switch will not activate a coin counter, if you do not hook
     it up. Both acceptors activate all coin counters simultaneously.
 5 - Utility coin switch will not activate a coin counter, if you do not hook
     it up. Left and right acceptors activate 2 coin counters seperately.
 6 - All 3 are same denomination and they activate all coin counters simul-
     taneously.
 7 - Left and center acceptor activate one coin counter; right acceptor
     activates another coin counter.
 8 - Left acceptor activates one coin counter; center and right acceptor
     activate another coin counter. Not for any currently designed 3-mech door.
 9 - Left, center and right acceptors activate 3 coin counters seperately.