TRHMSX – The open-source MSX2+ FPGA based clone

Description

New Version 1.6

Version 1.6 brings major improvements: the TRHMSX now features VGA and S-Video outputs, as well as support for any USB keyboard — no longer requiring PS/2 compatibility.
I’ve also reorganized the layout: video, audio, and power connections are now grouped on one side, while keyboard and joystick ports are placed on the other for a cleaner and more practical setup.

The MSX computers hold a special place in computing history, and their legacy continues through modern projects that combine nostalgia with innovation — such as FPGA synthesis, which allows the faithful recreation of original hardware.
This project is an open-source MSX2+ FPGA implementation, inspired by the 1chipMSX but featuring significant improvements and a brand-new PCB design.

At the heart of the system is a Cyclone I FPGA, accompanied by several supporting components. The board is a 4-layer PCB measuring 12 × 15 cm, carefully designed for performance and reliability.

Main Features

• MSX2+ Compatibility — Faithfully reproduces the original MSX2+ architecture, ensuring compatibility with a wide range of classic software and games.

• Expanded Memory Options — Configurable with 2 MB or 4 MB of mapped RAM, offering flexibility for different applications.

• VDP 9958 Video Processor — Delivers sharp graphics and authentic visual performance true to the original MSX experience.

• FM and SCC Sound Capabilities — Provides authentic MSX audio through integrated FM synthesis, SCC, and the original PSG chip.

• USB Keyboard Support — Fully compatible with standard USB keyboards.

• microSD Card Slot — Convenient storage for games, files, and MSX-DOS2 system tools.

• Dual MSX Cartridge Slots — Supports original MSX cartridges and peripherals.

• Dual Joystick Ports — Ideal for multiplayer games and compatible with classic MSX controllers.

• Wireless Network Support — Optional ESP8266 Wi-Fi connectivity for online features and network-based applications.

• 12V Cartridge Lines — Provides dedicated 12V lines for full compatibility with powered MSX peripherals.

Built and tested by The Retro Hacker.

Important Notes

Video Output:
The TRHMSX is factory-configured for VGA output (31 kHz), which delivers the best image quality. The VGA standard is supported by most LED/LCD monitors with a DB15 connector.
If your display only supports HDMI, you can use a VGA-to-HDMI converter, which is inexpensive and easy to find on marketplaces like eBay or Mercado Livre.

Keyboard:
This version supports USB keyboards only. While most tested USB keyboards work flawlessly, full compatibility with all models cannot be guaranteed.
It is recommended to avoid gaming keyboards or those requiring special Windows drivers, as they often do not follow USB standards and may not function properly with the TRHMSX.

Package Includes

• 1 × TRHMSX Computer

• 1 × microSD Card with MSX-DOS2 and utilities

• 1 × Power Supply (127–220 V)

• 1 × 3D-printed case with acrylic top in your chosen color