Game: Gorf
Manufacturer: Midway
Pinout: SP4


Power connector:
1 +5 Volts
2 +5 Volts
3 +12 Volts
4 Reset
5 -5 Volts
6 Key
7 Ground
8 Ground
9 Ground

21 position J1
1   2 Up
2   2 Down
3   2 Left
4   2 Right
5   2 Fire
6   Ground
7   1 Up
8   1 Down
9   1 Left
10  1 Right
11  1 Fire
12  Ground
13
14  Coin 1
15  Coin 2
16  Self Test
17  Tilt
18  1P Start
19  2P Start
20  Ground
21  +5 Volts

J2, 28 positions

1   Sound Left
2   Sound Right
3   Sound Ground
4
5   Pin 17, display pcb
6   Pin 4, display pcb
7   Pin 15, display pcb
8   Pin 5, display pcb
9   Pin 11, display pcb
10  Pin 7, display pcb
11  Pin 1 display pcb
12  Pin 2, display pcb
13  Pin 9, display pcb
14  Pin 13, display pcb
15
16
17  Pin 1, interface pcb
18
19  Pin 2, interface pcb
20  Pin 4, interface pcb
21  Pin 5, interface pcb
22
23  Pin 7, interface pcb
24  Pin 8, interface pcb
25  Pin 9, interface pcb
26  Pin 10, interface pcb
27  Pin 11, interface pcb
28  Pin 12, interface pcb

Interface pcb,  position, TV output

1 ground
2 TV Red
3
4
5 TV Green
6
7 TV Blue
8
9 TV Sync

Audio PCB, 11 position

1 self test switch out
2 left sound in
3
4 right sound in
5 +12 volts
6 sound in ground
7 ground
8 left speaker -
9 left speaker +
10 right speaker +
11 right speaker -