Sega Naomi System
JAMMA Harness Wiring
(JAMMA I/O BD)
(Figure 4)
Ground
Ground
+5v (Not Used)
+5v (Not Used)
(Not Used)
+12v (Not Used)
Key
Coin Meter 1
(Not Used)
(Not Used)
(Not Used)
Video Red
Video Blue
Video Ground
Test
Coin 1
1P Start
1P UP
1P Down
1P Left
1P Right
Attack 1P (1P SW1)
Grapple 1P (1P SW2)
Support 1P (1P SW3)
(Not Used)
(Not Used)
Ground
Ground
1A
2 B
3 C
4D
5E
6 F
7 H
8 J
9 K
10L
11M
12N
13 P
14R
15S
16T
17U
18V
19W
20X
21Y
22Z
23a
24b
25c
26d
27e
28f
Ground
Ground
+5v (Not Used)
+5v (Not Used) (Not Used)
+12v (Not Used) Key
Coin Meter 2
(Not Used)
(Not Used)
(Not Used)
Video Green
Video Sync
Service
(Not Used)
Coin 2
2P Start
2P UP
2P Down
2P Left
2P Right
Attack 2P (2P SW1)
Grapple 2P (2P SW2)
Support 2P (2P SW3)
(Not Used)
(Not Used)
Ground
Ground
8