Juno First FPGA Core

Arcade hardware implementation for MiSTer FPGA

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Overview

FPGA implementation of Juno First (1983), originally developed and released by Konami.

This core targets MiSTer FPGA and aims for accurate gameplay behavior, video timing, and sound reproduction.

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Game Information

Field	Value
Title	Juno First
Year	1983
Developer	Konami
Genre	Shoot 'em up
Players	1–2 alternating

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Controls

Default MiSTer gamepad mapping:

Input	Action
D-Pad / Joystick	Move
B	Fire
A	Warp
Right Shoulder	Insert Coin
Select	1 Player Start
Start	2 Player Start
Left Shoulder	Pause

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Features

• Arcade-accurate CPU timing
• Sprite priority and layer handling
• High score saving support
• MiSTer-compatible .mra provided
• Verified ROM definitions with checksums

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ROM Requirements

ROM files are not included.

To use this arcade core, you must provide legally obtained ROM files.

To simplify setup:

• .mra files are provided in the Releases section.
• The .mra specifies all required ROM files along with checksums.
• The ROM .zip filename corresponds to the naming convention used by the MAME project.

For setup instructions and environment configuration, refer to:

MiSTer Arcade ROM guide:
https://github.com/MiSTer-devel/Main_MiSTer/wiki/Arcade-Roms

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Installation

1. Copy the core .rbf file to your MiSTer /_Arcade/cores folder.
2. Copy the .mra file to your MiSTer /_Arcade folder.
3. Place the appropriate ROM .zip files in your /games/mame directory.
4. Launch the core from the MiSTer Arcade menu.

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Legal Notice

This project contains no copyrighted game data.

Users are responsible for obtaining and using ROM files in accordance with applicable laws.

Do not request ROM files in issues or discussions.

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Credits

FPGA core development: RodimusFVC
Original arcade game © Konami (1983)

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