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

A programmer has developed and shared Thoreau BASIC, a minimal BASIC interpreter that can boot natively on UEFI systems. This innovation allows vintage-style programming on modern computers, bridging old and new technology. The project is available on Show HN, with ongoing questions about its stability and compatibility.

A developer has released Thoreau BASIC, a minimal BASIC interpreter capable of booting directly on UEFI systems. This project offers a nostalgic programming environment reminiscent of vintage computers, now accessible on modern hardware without requiring an operating system. The developer’s goal was to create a small, simple, and self-contained environment for programming in BASIC, emphasizing ease of use and compatibility with current UEFI firmware.

The project was shared on Show HN by the creator, who explained that Thoreau BASIC is designed to run directly on UEFI firmware, bypassing the need for an OS. The interpreter supports core BASIC features, including line numbers, immediate mode execution, simple graphics, string handling, and arrays. The implementation is lightweight, with the entire codebase fitting within a few hundred kilobytes, and it is intended for educational and hobbyist use.

The developer highlighted that the interpreter is written in assembly and C, ensuring fast boot times and minimal resource use. Thoreau BASIC can be loaded from a UEFI shell or via a custom bootloader, making it accessible on a variety of modern PCs. The project is open-source, available on GitHub, and encourages community contributions and experimentation.

While the project is in early stages, initial tests show it successfully boots on several UEFI-compatible machines, allowing users to write and execute BASIC programs directly after startup. The developer notes that compatibility with certain hardware configurations and UEFI firmware versions remains to be fully tested, and some features are still under development.

At a glance
announcementWhen: announced on Show HN, recent release, o…
The developmentA developer announced the release of Thoreau BASIC, a lightweight BASIC interpreter that boots directly on UEFI machines, enabling retro programming environments on modern hardware.

Potential Impact of UEFI-Based Vintage Programming

This development is significant because it demonstrates that vintage programming environments like BASIC can be revived and run natively on modern hardware without relying on traditional operating systems. It opens possibilities for educational tools, hobbyist experimentation, and understanding low-level firmware interactions. By booting directly into a programming environment, users can explore computer architecture, firmware, and programming fundamentals in a simplified context, which could be useful for learning or retrocomputing projects.

Furthermore, this approach could influence future development of minimal, self-contained computing environments, especially for embedded systems or secure boot scenarios where a lightweight, OS-less environment is desirable. The project also underscores the ongoing interest in retrocomputing and the preservation of classic programming languages, making vintage environments more accessible and functional on contemporary hardware.

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Background of UEFI Boot and Retro Programming Revival

UEFI (Unified Extensible Firmware Interface) replaced traditional BIOS in most modern PCs, providing a flexible, modular firmware interface. UEFI allows systems to boot directly into custom environments, which has historically been used for secure boot, diagnostics, and recovery tools. The idea of running a BASIC interpreter directly from firmware is not new, but recent projects have increasingly explored minimal, self-contained environments that bypass traditional OS layers.

This project builds on a long-standing interest in retrocomputing and the desire to run classic programming languages on modern hardware. Previous efforts have involved creating bootable disks or virtual machines, but Thoreau BASIC’s direct UEFI boot method is a notable step forward. It aligns with a broader trend of experimenting with firmware-level programming and lightweight environments for educational or hobbyist purposes.

The developer’s motivation stems from nostalgia and educational curiosity, aiming to create a simple, vintage-style programming environment that can be easily accessed without complex setup procedures. The project’s open-source nature invites community involvement, which could lead to further enhancements and broader hardware compatibility.

“I wanted to create a simple, vintage programming environment that boots directly on modern hardware without needing an OS. UEFI makes that possible, and I think it opens up new ways to explore low-level programming.”

— Developer of Thoreau BASIC

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Compatibility and Stability of UEFI Booting

It is not yet fully clear how broadly compatible Thoreau BASIC will be across different hardware configurations and firmware versions. The developer has tested on several machines, but some UEFI implementations may pose challenges, especially with secure boot or custom firmware settings. Stability over extended use and support for advanced features are still under evaluation.

Additionally, questions remain about the ease of use for non-technical users and potential security implications of booting custom code directly from firmware. Community feedback and further testing will be needed to address these uncertainties.

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Future Development and Community Involvement

The developer plans to improve hardware compatibility, add more features to the BASIC interpreter, and enhance documentation to help others replicate and build upon this work. They also intend to gather user feedback to identify bugs and usability issues.

Community contributions are encouraged, and the project’s GitHub repository is open for pull requests. Future milestones include supporting additional graphics modes, expanding BASIC language features, and possibly creating a dedicated bootloader for easier deployment on various UEFI systems.

Further testing on a wider range of hardware will determine the project’s viability as a portable, standalone environment for vintage programming enthusiasts and educators.

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Key Questions

Can Thoreau BASIC run on any UEFI-compatible machine?

It currently works on several tested systems, but full compatibility across all hardware is not yet confirmed. Compatibility depends on UEFI firmware features and security settings.

Does this require disabling secure boot?

Most likely, yes. To boot custom firmware code like Thoreau BASIC, secure boot may need to be disabled or properly configured to allow unsigned code.

Is Thoreau BASIC open source?

Yes, the project is available on GitHub under an open-source license, encouraging community involvement and further development.

What hardware features are supported?

The current implementation supports basic graphics and input, but advanced features like high-resolution graphics or sound are still under development.

What are the potential educational uses?

This environment can serve as a teaching tool for understanding firmware, low-level programming, and the fundamentals of computer architecture, especially for students interested in vintage computing or embedded systems.

Source: hn

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