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This repository contains the KiCAD project files for a custom MIDI Interface
Board, designed to connect to the User IO port of the MiSTer FPGA.
It enables MIDI input and output functionality for cores that support MIDI,
including the Atari ST, X68000, PC, and Minimig.
The goal of this project is to provide a simple and reliable way to connect external MIDI hardware (keyboards, synthesizers, modules) to the MiSTer FPGA platform.
If you enjoy exploring the full capabilities of MiSTer cores such as the Atari ST, Minimig, ao486 (PC) or X68000 with authentic MIDI input/output, this board makes it possible.
MiSTer already supports MIDI in several cores, but connecting external gear requires
proper electrical isolation and signal compliance with the MIDI standard.
This board provides exactly that:
This design does not emulate MIDI or add new core support—it acts as a hardware bridge for existing MiSTer MIDI features.
This is the schematics:
/kicad/ – KiCAD design files for the MIDI Interface Board/bom/ – Circuit parts and assembly guide/gerbers/ – Gerber files for PCB fabrication/assets/ – Images of schematics, renders, and assembled boardNo liability is assumed for misuse or damage.
See LICENSE for more information.
This project is intended for hobbyist and educational purposes.
Use at your own risk. The MiSTer FPGA and connected MIDI hardware must
be in good working condition before use. This repository is not affiliated with MiSTer project developers but we support them.
The 3D models and footprints belong to each license holder.
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