Technart PC Engine JAMMA PCB

The Technart PC Engine (テクナート PCエンジン) JAMMA adaptor is a small PCB and associated cabling that allows a standard PC Engine console to be used in an arcade cabinet. It achieves this by amplifying the console's RGB for the arcade monitor, controlling the start button, and allowing either timed play per credit or simply allowing a coin to enable the start button. It also had a flashing screen and beeper to signal the approaching end of timed play. The specifics of its operation could be selected via the DIP switches.

The following information is taken from the instruction sheet included with this PCB. There were at least two variations of this PCB, it seems, so this information may not be the same for your device.

There is a little more information about this unit on the forum.

DIP Switches

There are three selecting mechanisms, labeled DIPSW1 through DIPSW3, though 2 & 3 are rotary selectors, not DIP switch arrays.

DIPSW1 is a standard DIP switch block with four switches:

1 2 3 4 Function
off off 1 coin / 1 credit
on off 1 coin / 2 credits
off on 2 coins / 1 credit
on on 3 coins / 1 credit
off Demo Sound Off
on Demo Sound On
off Credit Game
on Timer Game

DIPSW2 sets the timer game time in 1-minute increments.

DIPSW3 sets the timer game time in 10-minute increments.

Potentiometer Adjustments

There are five potentiometers on the PCB, to control the analogue outputs. Pot 1-3 control the red, green and blue output levels respectively. Pot 4 controls the PC Engine audio output level Pot 5 controls the 'coin in sound'. I think this refers to the 'please insert coin' beep that triggers when the timer is about to run out.

Cautions

There are two cautions (注意) included with the unit.

注意1 - Be careful not to use less than 5V. Ensure your 5V is adequate.
注意2 - Use the included rubber band to secure the PC Engine expansion connector as shown in the diagram above.

JAMMA Connector

This PCB uses a nearly-standard JAMMA connector. There are only a couple of changes, notably Player 2 Start and Reset. The rarely used counters aren't the same as JAMMA. The rest of the changes are simply things this PCB doesn't require. The specific details are below, differences from standard JAMMA noted with a *.

PARTS SIDE SOLDER SIDE
GND 1 A GND
GND 2 B GND
+5V 3 C +5V
-5V 4 D +5V
* N/C 5 E N/C *
+12V 6 F +12V
KEY 7 H KEY
* GAME COUNTER 8 J COIN COUNTER *
* N/C 9 K N/C *
SPEAKER + 10 L SPEAKER -
N/C 11 M N/C
RED 12 N GREEN
BLUE 13 P SYNC
GND 14 R SERVICE SW
* N/C 15 S N/C *
COIN 1 16 T COIN 2
1P START 17 U RESET *
1P UP 18 V 2P UP
1P DOWN 19 W 2P DOWN
1P LEFT 20 X 2P LEFT
1P RIGHT 21 Y 2P RIGHT
1P FIRE 1 22 Z 2P FIRE 1
1P FIRE 2 23 a 2P FIRE 2
1P SELECT 24 b 2P SELECT
N/C 25 c N/C
* 2P START 26 d N/C
GND 27 e GND
GND 28 f GND
 
 arcade/technart_pc_engine_jamma.txt · Last modified: 2019/08/27 20:45 (external edit)
 
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