Document Title: [gaplus.txt (text file)]
Gaplus Pinout
Parts Side Solder Side
-----------------------------------------
GND A 1 GND
SPEAKER + B 2 SPEAKER -
LOCK OUT SOLENOID C 3 COIN COUNTER
1 P START LAMP D 4 2 P START LAMP
+12V E 5 +12V
+5V F 6 +5V
GND H 7 GND
SERVICE SW J 8 N/C
COIN 1 SW K 9 COIN 2 SW
1 P START SW L 10 2 P START SW
P1 FIRE SW M 11 P2 FIRE SW
P1 LEFT SW N 12 P2 LEFT SW
P1 DOWN SW P 13 P2 DOWN SW
P1 RIGHT SW R 14 P2 RIGHT SW
P1 UP SW S 15 P2 UP SW
N/C T 16 N/C
N/C U 17 N/C
N/C V 18 N/C
N/C W 19 N/C
N/C X 20 N/C
COIN COUNTER 2 Y 21 TABLE GND
GND Z 22 GND
If you have a cocktail version, then connect pin 21 to ground. Otherwise,
leave it off.
SOCKET CONTACT (VIDEO) SOCKET CONTACT (PWR)
1 RED 1 +12V 1A
2 GREEN 2 GND
3 BLUE 3 +5V 4A
4 SYNC
5 GND
6 N/C
SW-A IS THE ONE CLOSEST TO THE CONNECTOR
Switch A ( * indicates factory recommended settings )
1 2 3 4 5 6 7 8
off off 3 fighters *
off on 2 fighters
on off 4 fighters
on on 5 fighters
off off 1 coin = 1 credit * (coin 1)
off on 1 coin = 2 credits
on off 2 coins = 1 credit
on on 3 coins = 1 credit
off sound in attract mode
on no sound in attract mode *
off (not used - should stay off)
off off 1 coin = 1 credit * (coin 2)
off on 1 coin = 2 credits
on off 2 coins = 1 credit
on on 3 coins = 1 credit
Switch B
1 2 3 4 5 6 7 8
off normal *
on test
off off on level 1 (easiest)
off off off 0 (standard) *
off on off 2 (progressively
off on on 3 more difficult)
on off off 4
on off on 5
on on off 6
on on on 7
off normal * Round Advance
on advance (see note below)
off off off 100, 300 and every 600 Bonus Ships
off off on 150, 400 (in hundred housands)
[Note: on my machine off on off 150, 400 and every 900
these switches did off on on 100, 300 and every 300
_not_ have the on off off 50, 200 and every 300
indicated effect] on off on 50, 150 and every 600
on on off 50, 150 and every 300
on on on 30, 150 and every 600 *
Round Advance note: By turning 'on' the option switch while 'parsec' is being
indicated on the screen, you can advance through the 'rounds'. Push the one
player control lever forward (player number one _up_ switch is 'on') to
indicate the number. The indicated round number will appear on the monitor
screen when the option switch is turned 'off'.
The round advance stuff is as written in the manual. I have not tested
this function. Also, as indicated above, the bonus ships settings do not
affect my machine as indicated above - I just experimented to get the best mix
I could find. The manual these are copied from is marked 'PRELIMINARY', so
some things may have been changed in the final release version of the game,
but everything else seems to work as indicated.
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