Frogger Sega/Gremlin, 1981                                
--------------------------

            Solder Side            |             Parts Side
   ________________________________|___________________________________
                -5V            | A | 1 |             +12               
             Speaker           | B | 2 |           Speaker
           2P  Button 2        | C | 3 |          2P  Button 1       
           2P  Left            | D | 4 |          2P  Right
           1P  Start           | E | 5 |          2P  Start        
           1P  Button 1        | F | 6 |          2P  Up  
           1P  Button 2        | H | 7 |        Service Switch  
           1P  Right           | J | 8 |          1P  Left        
           1P  Up              | K | 9 |          2P  Down     
           Coin  (1)           | L | 10|          Coin  (2)  
           1P  Down            | M | 11|       Coin Counter  (1)
          1p  Button 3         | N | 12|       Coin Counter  (2)
          Video Green          | P | 13|        Video Blue
          Video Red            | R | 14|        Video Sync   
                               | S | 15|        2P  Button 3                 
              GND              | T | 16|             GND        
              GND              | U | 17|             GND       
              +5               | V | 18|             +5        



--------------------------------------------

1   2   3   4   5   6   Meaning
-------------------------------------------------------
On  On                  3 Frogs
On  Off                 5 Frogs
Off On                  7 Frogs
Off Off                 256 Frogs (!)

        On              Upright unit
        Off             Cocktail unit

            On  On      1 coin 1 play   \
            On  Off     2 coins 1 play   \ Coin Mech #1
            Off On      3 coins 1 play   /
            Off Off     1 coin 2 plays  /

            On  On      1 coin 1 play   \
            On  Off     2 coins 1 play   \ Coin Mech #2
            Off On      1 coin 3 plays   /
            Off Off     1 coin 6 plays  /

=============================================================================
Frogger
-------

              COMPONENT  |  SOLDER
    ---------------------+----------------------
               GND   | 1 | A |   GND
               GND   | 2 | B |   GND
               +5V   | 3 | C |   +5V
               +5V   | 4 | D |   +5V
                     | 5 | E |   
                     | 6 | F |   
                     | 7 | G |   
              Coin   | 8 | H |   
                     | 9 | I |   
          1P.Start   |10 | J |   2P.Start
           1P.Left   |11 | K |   1P.Right
           1P.Shot   |12 | L |   2P.Shot
           2P.Left   |13 | M |   1P.Left
                     |14 | N |   
                     |15 | O |   
             Green   |16 | P |   Red
              Blue   |17 | Q |   Sync
           Speaker   |18 | R |   
              +12V   |19 | S |   +12V
              +12V   |20 | T |   +12V
               GND   |21 | U |   GND
               GND   |22 | V |   GND