🖥️ Epson QX-11 Research Archive
Welcome to the unofficial technical archive for the Epson QX-11, a rare MS-DOS-compatible computer from the early 1980s. Also known as the QC-11 in Japan and Abacus in Venezuela, this machine features proprietary video and floppy systems, a ROM cartridge slot, and surprising custom logic.
This project documents:
- 🧠 Hardware findings and reverse engineering
- 💾 ROM dumps and disassemblies
- 🛠️ Hardware modifications and modern replacements
- 📷 High-resolution board photos and scanned advertisements
- 📘 Schematics and block diagrams
🔍 Explore the Repository
- 📸 Photos
- Epson QC-11 Wins Good Design Award
- 📸 Motherboard Gallery
- 🧠 IC Inventoryof the QX/QC-11
- 🎮 Joystick Port Info
- 💾 ROM Dumps
- 📐 Schematics
- 🛠️ Experiments
- 📖 Disassemblies
- 📰 Ad Translation (ASCII Magazine, Aug 1985)
📰 Featured Advertisement: Epson QC-11 (ASCII Magazine, August 1985)
A two-page Japanese ad from 1985 showcasing the QC-11 in a business setting.
Click the link above for full English translation.
📄 Licenses
- Code & schematics: MIT License
- Media & ROMs: CC BY 4.0
🤝 Contribute
Have ROMs, photos, or knowledge about the QX-11 or related Epson systems? Feel free to submit a pull request or open an issue.
💾 Disclaimer
ROM dumps and photos are shared for educational and preservation purposes only. The copyright of any original software belongs to its respective owners.