Blue Print Hardware FPGA Core

Bally/Midway & Jaleco arcade hardware implementation for MiSTer FPGA

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Overview

FPGA implementation of the Bally/Midway arcade hardware platform used by:

• Blue Print (1982)
• Grasspin (1983)
• Saturn (1983)

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

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Supported Games

Blue Print

Field	Value
Year	1982
Publisher	Bally/Midway
Genre	Maze / Action
Players	1–2 alternating

Grasspin

Field	Value
Year	1983
Publisher	Jaleco
Genre	Maze / Action
Players	1–2 alternating

Saturn

Field	Value
Year	1983
Publisher	Jaleco / Zilec
Genre	Shooter
Players	1–2 alternating

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Controls

Default MiSTer gamepad mapping (may vary slightly per title):

Input	Action
D-Pad / Joystick	Move
Button A	Primary Action
Button B	Secondary Action (if applicable)
Select	Insert Coin
Start	1 Player Start
Right Shoulder	2 Player Start
Left Shoulder	Pause

Note: Specific action behavior depends on the loaded game.

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Features

• Shared hardware implementation for all supported titles
• 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:

• Separate .mra files are provided in the Releases section for each supported game.
• Each .mra specifies required ROM files along with checksums.
• The ROM .zip filenames correspond 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 desired game .mra file to your MiSTer /_Arcade folder.
3. Place the appropriate ROM .zip file(s) in your /games/mame directory.
4. Launch 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 games © Bally/Midway, Jaleco, Zilec