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