DIG DUG
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A - ground 1 - ground
B - +5 VDC 2 - +5 VDC
C - 3 -
D - 4 -
E - 5 -
F - cocktail * 6 -
H - 7 -
J - 8 -
K - 2P start 9 - credit
L - 2P pump * 10 - 1P start
M - 2P left * 11 - 1P pump
N - 2P right * 12 - 2P down *
P - 1P left 13 - 2P up *
R - 1P right 14 - 1P down
S - 15 - 1P up
T - 16 -
U - 17 - video ground
V - 18 -
W - blue 19 - red
X - 20 - green
Y - 21 -
Z - control ground 22 -
The 36 VAC is used to derive an internal -29 VDC for the high score
table so it is not required for the game to work.
* For cocktail cabinet, connect pin F to ground
and wire the 2P pins as shown.
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