ARpiCADE 3–4 Player Raspberry Pi JAMMA Adapter

JAMMA cabinet installation: The main ARpiCADE adapter connects to a compatible JAMMA arcade cabinet harness. It uses the cabinet's existing properly regulated power supply and standard JAMMA connections for Player 1 and Player 2 controls, audio, and supported display signals.

1. Disconnect all power: Turn off and disconnect the arcade cabinet or compatible Super Gun before installing or removing any adapter, expansion board, ribbon cable, or Raspberry Pi connection.

2. Inspect cabinet wiring: Confirm the JAMMA connector is correctly wired and in good condition. Verify the power supply, grounds, audio, controls, and intended monitor connection before installing the ARpiCADE.

3. Install the main ARpiCADE adapter: Connect the full-size adapter to the appropriate JAMMA harness using the correct connector orientation. Never force a JAMMA edge connector or connect hardware to an unknown wiring configuration.

4. Fit the multiplayer expansion PCB: The supplied expansion hardware connects to the appropriate ARpiCADE interface. Carefully align the PCB with all required headers and confirm the connector pins are straight and properly positioned.

5. Check the 40-pin headers: Both the expansion board and Raspberry Pi ribbon connection require correct alignment. An offset by even one pin or a reversed connection can damage the adapter, expansion PCB, or Raspberry Pi.

6. Connect the Raspberry Pi ribbon cable: Follow the connector orientation shown in the official four-player manual. Do not assume that the cable can be reversed or shifted on the header.

7. Check the expansion board before power-on: Inspect the entire 40-pin connection, ribbon cable seating, adapter clearance, and main JAMMA connection before reconnecting power.

Critical warning: Never power the system with an offset, reversed, or partially seated 40-pin connection. If the connector arrangement is uncertain, review the official four-player installation manual before proceeding.

Players 1 and 2: Standard JAMMA wiring carries joystick directions, start, coin, and up to three normal action-button inputs for both players.

Players 3 and 4: The included multiplayer expansion provides dedicated connection points for Player 3 and Player 4 joystick directions, start, coin, and action-button inputs.

Required control harnesses: Player 3 and Player 4 controls connect using compatible multiplayer harnesses. The exact harness design, connector pinout, and number of harnesses depend on the original cabinet, control panel, and selected game-list image.

Konami-style multiplayer cabinets: Dedicated Konami-style three- and four-player game configurations may use separate auxiliary harness connections for the additional players. Some installations require two compatible harnesses.

Konami 15-pin harness: The separately available Konami 4-Player Kick Harness is intended for matching Konami-style 15-pin connections. Confirm the cabinet's exact connector, wiring layout, and pinout before ordering or connecting a harness.

Six-button Player 1 and Player 2 support: Games that use buttons 4, 5, and 6 require the appropriate optional extra-button harness, correct DIP-switch configuration, and compatible cabinet controls.

DIP-switch settings: Follow the documented configuration for standard JAMMA or expanded six-button operation. Incorrect settings may cause some controls to be unavailable or behave unexpectedly.

Cabinet modification: The adapter and harnesses provide electrical connections; they do not physically add joysticks or pushbuttons. Additional controls may require drilling or modifying the existing control panel.

Expansion already included: This complete 3–4 Player ARpiCADE system already includes its multiplayer expansion PCB. Do not buy a second expansion adapter when only the necessary cabinet control harnesses are required.

Original arcade CRT monitors: The full-size ARpiCADE multiplayer adapter supports compatible low-resolution RGBS video configurations for traditional arcade displays when the correct hardware and software settings are selected.

Monitor Type dropdown: Select the monitor configuration appropriate for your cabinet. Verify the intended resolution and signal type before connecting the ARpiCADE or applying power.

VGA configurations: Supported higher-resolution setups can use an appropriate VGA arrangement with a compatible monitor and correctly configured ARpiCADE software.

Modern LCD or LED displays: Selected modern-display configurations are supported when the correct hardware connections, display output, and software settings are used.

Critical video warning: Do not send an incompatible video resolution or signal to an original arcade CRT monitor. A monitor configuration intended for a modern display is not automatically suitable for a traditional low-resolution arcade monitor.

Amplified JAMMA mono audio: The adapter supports amplified mono audio through a correctly wired compatible JAMMA cabinet speaker connection.

Line-level stereo audio: Stereo output is available for installations using a suitable external amplifier or powered stereo audio system.

Audio wiring: Verify the cabinet's actual audio connection before use. Do not confuse amplified speaker outputs with line-level stereo outputs or connect incompatible audio equipment.

Supported HighScoreSaves software hardware: HighScoreSaves-provided multiplayer SD card images for this system are intended for Raspberry Pi 3B and 3B+ unless otherwise stated.

Raspberry Pi inclusion: The base ARpiCADE 3–4 Player system does not automatically include a Raspberry Pi. Use the available Raspberry Pi 3 product option if you want a supported unit supplied with your system.

SD card requirement: Use a compatible SD card with a supported ARpiCADE system image. A prepared SD card image is included only when selected as part of the product configuration.

18-game Konami-style configuration: A focused group of 18 compatible three- and four-player Konami-style arcade games, intended for supported multiplayer cabinet arrangements and control wiring.

80-game multiplayer configuration: An expanded collection of 80 three- and four-player arcade games. Verify the cabinet's player controls, harness connections, and intended game list.

80 multiplayer plus 4,983 additional games: This larger configuration combines the 80-game multiplayer collection with a separate 4,983-game horizontal arcade and console library.

Choose the correct image: Consider the intended monitor orientation, number of players, control-panel button layout, Raspberry Pi model, and the cabinet's multiplayer wiring.

Additional software configurations: Other Raspberry Pi models may require a different supported ARpiCADE software image. Do not assume the HighScoreSaves Pi 3 multiplayer images will run on incompatible Raspberry Pi hardware.

Software customization: ARpiCADE is a Raspberry Pi-based platform that permits supported software, menu, display, and control customization. This system does not use original game PCBs in the same manner as an original-hardware multigame conversion.

Software support: Visit the official ARpiCADE support website for current software releases, documentation, and configuration assistance.

Does this support three- and four-player games?

Yes. The included multiplayer expansion supports compatible three- and four-player configurations with the correct software image, control harnesses, and cabinet controls.

How are Player 3 and Player 4 connected?

Through the dedicated multiplayer expansion headers using compatible Player 3 and Player 4 control harnesses. The exact harness configuration depends on the cabinet and selected game setup.

Do I need to purchase the separate four-player expansion board?

No. This complete ARpiCADE 3–4 Player product already includes the multiplayer expansion hardware. Only purchase additional compatible harnesses, mounting hardware, or other components as needed.

Is a Raspberry Pi included?

Only when a Raspberry Pi is specifically selected as a product option. The base system does not automatically include a Raspberry Pi.

Can I use an original CRT arcade monitor?

Yes, with a compatible RGBS arcade monitor, properly configured video output, and the correct monitor selection.

Can Player 1 and Player 2 use six buttons?

Yes. Buttons 4, 5, and 6 require a compatible optional extra-button harness, the correct DIP-switch settings, and properly installed cabinet controls.

Will I need to modify my control panel?

Possibly. Cabinets without the necessary Player 3, Player 4, or extra action buttons may require additional controls, wiring, or physical control-panel modifications.

What if the system does not boot or recognize the multiplayer expansion?

Disconnect power and verify the 40-pin expansion board and Raspberry Pi ribbon cable are correctly aligned. Check the original JAMMA wiring, power supply, compatible Pi model, software image, and control-harness connections before troubleshooting further.

Where can I find the installation manual?

Review the RaspberryJAMMA Four-Player Add-On Manual PDF before connecting the expansion board or Raspberry Pi.

Where can I get ARpiCADE software and technical support?

Visit the official ARpiCADE support website for software documentation, installation information, and community troubleshooting.

For questions about a HighScoreSaves order or selected configuration, contact sales@highscoresaves.com with your product details, Raspberry Pi model, monitor type, and relevant cabinet-wiring information.