Show HN: I Wrote A BASIC Interpreter That Boots On UEFI Machines

A developer has successfully created a BASIC interpreter that boots directly on UEFI systems, allowing vintage-style programming environments to run on modern hardware. This development is confirmed through a recent post on Show HN, where the creator shared the project details and code. The achievement demonstrates the feasibility of running classic interpreters in contemporary firmware environments, which could influence hobbyist projects and educational tools.

The project was initiated by an individual aiming to recreate a small, old-fashioned BASIC environment with features such as line numbers, immediate mode execution, simple graphics, strings, and arrays. The interpreter is designed to run directly on UEFI firmware, bypassing traditional operating systems. According to the creator, the implementation is lightweight and intended for experimentation rather than production use.

The developer reported that the interpreter is capable of booting on several UEFI-compatible machines, with initial tests confirming successful startup and basic program execution. The code is publicly available, and the developer encourages others to experiment and expand the project. The approach involves writing a minimal UEFI application that loads the interpreter into memory and initializes it before handing control over to user programs.

While the project is still in early stages, it demonstrates that retro programming environments can be adapted to modern firmware standards, opening doors for hobbyists and educators interested in vintage computing. The developer emphasized that the main goal was to create a simple, portable environment that could run on various hardware without needing an operating system or complex boot loaders.

Why Running BASIC on UEFI Matters

This development is significant because it bridges the gap between retro computing and modern firmware technology. By enabling a BASIC interpreter to boot directly on UEFI, it shows that classic programming environments can be preserved and adapted for contemporary hardware. This has potential implications for educational projects, hobbyist experimentation, and even embedded systems where minimal environments are desirable. It also demonstrates the flexibility of UEFI firmware, which is increasingly replacing traditional BIOS in modern PCs, as a platform for custom, low-level software development.

Furthermore, this project underscores the ongoing interest in vintage computing, highlighting how modern tools can revive and sustain old programming languages and environments. For enthusiasts, it offers a new way to explore programming history without the need for emulators or legacy hardware, making retro computing more accessible and integrated into current systems.

Background on Retro Computing and UEFI Development

Retro computing enthusiasts have long sought ways to run classic programming environments on modern hardware, often relying on emulators or dedicated vintage machines. The advent of UEFI firmware, which replaced BIOS in most PCs starting around 2010, introduced a more flexible and programmable firmware interface capable of running custom applications during the boot process.

Previous efforts to run vintage interpreters or operating systems directly on UEFI have been limited, often requiring complex setup or custom boot loaders. This project marks a notable step in demonstrating that a simple, classic programming environment like BASIC can be ported directly into the UEFI space, leveraging its capabilities for low-level hardware access and fast boot times.

The creator’s approach aligns with a broader trend of using UEFI for custom firmware projects, including lightweight operating systems, boot managers, and now, vintage interpreters. This trend reflects growing interest among hobbyists and developers in exploiting UEFI’s potential for innovative, low-level computing projects.

“My goal was to create a small, simple BASIC interpreter that could run directly on UEFI hardware without needing an OS.”

— the project creator

Unresolved Technical Challenges and Limitations

While the project has demonstrated successful boot and basic execution, several uncertainties remain. It is not yet clear how well the interpreter handles more complex programs or graphics, or how portable the implementation is across diverse hardware configurations. Additionally, performance limitations and stability issues have not been fully explored or documented.

There is also uncertainty about the potential for expanding this environment into a more complete or user-friendly system, or integrating additional features like file I/O or networking. The project is still in early development, and further testing is needed to determine its robustness and real-world applicability.

Next Steps for Development and Community Involvement

The creator plans to refine the interpreter, improve hardware compatibility, and add features such as file management and graphics support. They also intend to document the process thoroughly to encourage community experimentation and collaboration. Future updates may include porting the interpreter to other firmware platforms or integrating it into larger hobbyist projects.

Community members interested in retro computing and UEFI development are expected to contribute by testing on different hardware, suggesting improvements, and possibly creating derivative projects based on this work. The developer has invited others to review the code and participate in expanding the project’s capabilities.

Key Questions

What hardware is needed to run this BASIC interpreter?

The interpreter is designed to run on UEFI-compatible PCs. Specific hardware requirements are minimal, but successful operation depends on UEFI firmware support and sufficient memory. The developer has tested it on several modern machines, but compatibility may vary.

Can this interpreter run existing BASIC programs?

Yes, the interpreter supports basic features like line numbers, strings, and arrays, allowing simple BASIC programs to run. However, complex programs or those relying on extended graphics or external libraries may not function fully yet.

Is the project open source?

Yes, the code is publicly available, and the developer encourages others to experiment, modify, and improve it.

What are the potential applications of this project?

This project is primarily educational and experimental, aimed at hobbyists interested in vintage programming and firmware development. It could also serve as a foundation for embedded systems or custom firmware environments.

Source: hn