The world of DIY computing is constantly evolving, but one project is taking a decidedly retro approach. TechPaula’s LT6502 is a fully functional laptop built around the 6502 microprocessor – a chip that powered iconic 1980s computers like the Commodore 64 and Apple II. This isn’t just about nostalgia; it’s a demonstration of ingenuity and a fascinating exploration of what’s possible with vintage hardware.
The LT6502 represents a compelling intersection of classic and new, offering a portable computing experience rooted in the past but built with modern techniques. The project builds on a previous desktop build, the PC6502, which brought the 6502 chip into a PC/104 form factor. This new iteration aims to deliver the same 8-bit charm in a more convenient, laptop-style package. The appeal of a self-contained, portable retro system is clear and TechPaula’s work is quickly gaining attention within the retrocomputing community.
At the heart of the LT6502 is the 65C02 microprocessor running at 8MHz. It’s paired with 46KB of RAM and utilizes CompactFlash storage. The system runs EhBASIC, a programming language familiar to those who grew up with early home computers. A 9-inch display provides a visual interface, while a built-in 10,000mAh battery offers portability. Connectivity is provided through a serial console and USB-C for charging, bridging the gap between vintage hardware and modern conveniences. The inclusion of a custom keyboard with low-profile switches and an HDSP-style 8-character display further enhances the user experience.
From PCB to Portable Powerhouse
The journey from concept to working laptop involved a significant amount of hardware design and assembly. According to updates posted on GitHub, the project began in November 2025 with initial PCB design work. By December 30, 2025, the printed circuit boards had arrived, and initial power-up tests in January 2026 confirmed correct voltage levels. The project quickly progressed, with basic ROM/RAM functionality established by January 3, 2026, and the VIA and ACIA chips brought online shortly after, enabling keyboard communication.
The integration of the keyboard into the firmware by January 5, 2026, was a key milestone, allowing users to input commands without relying on a separate console. CompactFlash storage and a beeper were added on January 9, 2026, and the system was confirmed to run reliably on battery power. Display integration followed on January 16, 2026, with a 4.3″ 800×480 RA8875-based display successfully implemented after an earlier attempt with an LT7683 display proved unsuccessful. Recent tweaks on January 18, 2026, focused on optimizing FTDI read/write speeds.
A 3D-Printed Case and Open-Source Design
The LT6502’s components are housed in a 3D-printed case, providing a protective enclosure for the custom PCBs and adding a touch of modern aesthetics to the retro build. The case incorporates built-in LEDs for visual appeal. Notably, all project files, including schematics and PCB designs, are publicly available on TechPaula’s GitHub repository, encouraging further development and experimentation within the retrocomputing community. The project is also detailed on Paula Maddox’s blog, offering a more personal account of the build process.
The LT6502 isn’t just a technical achievement; it’s a testament to the enduring appeal of classic computing. As noted in a discussion on Hacker News, the project sparks reflection on alternative technological timelines and the potential for efficient computing within constrained hardware parameters. The project’s success demonstrates a vibrant community eager to explore the possibilities of retro technology.
Looking ahead, TechPaula plans to implement the LT6502’s internal expansion slot, opening up further possibilities for customization and functionality. The LT6502 serves as an inspiring example of how passion, ingenuity, and open-source collaboration can breathe new life into classic technology, offering a unique and engaging computing experience for enthusiasts and hobbyists alike.
What are your thoughts on the resurgence of retro computing? Share your comments below and let us know what classic systems you’d like to observe revived!
