# Electrocoin

The Electrocoin standard was introduced before JAMMA (Japanese Arcade Machine Manufacturers Association) to allow various games to be connected to generic cabinets such as Silverline and Goliaths. They use the same 28 way connector, but the designations are different. Pins 16 and 18 were 3 player and 4 player start buttons, and were superseded when 3 button games became popular. Pins 14 and 20 were free, but were used by us to allow for easy servicing of games.

28 PIN UNKNOWN CONNECTOR on the arcade machine

## Lower side:

Pin | Description
--- | ---
A | Ground
B | Ground
C | +5V
D | +5V
E | +12V
F | -5V
H | Not used
J | -12V
K | Keyway
L | Speaker 1
M | Speaker 1
N | Speaker 2
P | Player 2 Up
R | Speaker 2
S | Player 2 Right
T | Player 2 Button 1
U | Player 2
V | Player 2 Button 2
W | Player 2 Left
X | (Horizontal Sync)
Y | Player 2 Start
Z | Video Red
Aa | Video Green
Ab | Video Blue
Ac | Video Sync
Ad | Ground
Ae | Ground
Af | Ground

## Upper side:

Pin | Description
--- | ---
1 | Ground
2 | Ground
3 | +5V
4 | +5V
5 | +12V
6 | -5V
7 | Not used
8 | -12V
9 | Keyway
10 | Meter 1
11 | Meter 2
12 | Credit Board Meter
13 | Player 1 Up
14 | Test
15 | Player 1 Right
16 | Player 2 Button 3
17 | Player 1 Down
18 | Player 1 Button 3
19 | Player 1 Left
20 | Service
21 | Player 1 Start
22 | Player 1 Button 1
23 | Player 1 Button 2
24 | Coin 1
25 | Coin 2
26 | Ground
27 | Ground
28 | Ground

Contributor: | Joakim Ögren

Source: | Electrocoin pinout at Technick.net

Copyright © The Hardware Book Team 1996-2004.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2002-01-10