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 machines. This achievement allows vintage-style programming environments to run on modern hardware without traditional operating systems, highlighting both technical skill and nostalgic interest. The project, shared publicly on Show HN, underscores a novel approach to low-level programming and system interoperability.

The developer, who has not been publicly named, began the project out of a desire for a simple, old-fashioned programming environment reminiscent of classic BASIC. The interpreter is designed to operate in the UEFI firmware environment, bypassing the need for an OS, and can run directly on contemporary PCs that support UEFI booting. According to the developer, the interpreter features line numbers, immediate mode, simple graphics, strings, and arrays, mimicking the classic BASIC experience.

Technical details shared by the developer indicate that the implementation involves writing a custom UEFI application that loads the interpreter into memory during boot. The code is written in C and assembly, tailored to UEFI specifications, and is intended to be lightweight and portable. The project is hosted on GitHub, with the developer encouraging others to experiment and extend its capabilities.

Potential Impact on Retro Programming and Education

This development matters because it enables running a vintage programming environment directly on modern hardware without needing an emulator or legacy OS. It opens possibilities for educational projects, hobbyist experimentation, and preservation of classic programming styles. By demonstrating that a simple interpreter can operate in the UEFI environment, it also showcases the flexibility of firmware-level programming and the potential for low-level software projects.

Furthermore, this project highlights the ongoing interest in retro computing and minimalistic software environments, which can serve as platforms for learning about system architecture and low-level programming techniques. It may inspire similar projects aimed at reviving other classic languages or environments in a modern context.

Background of UEFI and Vintage BASIC Projects

UEFI (Unified Extensible Firmware Interface) is the modern replacement for traditional BIOS firmware, providing a standardized environment for initializing hardware and launching bootloaders. Since UEFI supports executable applications during boot, developers have experimented with running custom code at this stage, including small operating systems, boot managers, and diagnostic tools.

Meanwhile, BASIC was a popular programming language in the 1970s and 1980s, known for its simplicity and accessibility. Enthusiasts have long sought to recreate or emulate BASIC environments, often using emulators or vintage hardware. However, running BASIC directly in the UEFI firmware environment is a novel approach, combining low-level firmware programming with retro language design.

The developer’s effort builds on prior work in UEFI application development and minimal OS projects, but the specific achievement of booting a BASIC interpreter directly on UEFI firmware marks a new milestone in this niche.

“Creating a BASIC interpreter that boots directly on UEFI was both a technical challenge and a nostalgic project. It demonstrates that even simple, vintage environments can be revived on modern hardware.”

— the developer

Unanswered Questions About Compatibility and Extensibility

It is not yet clear how broadly compatible the interpreter is across different UEFI implementations and hardware configurations. The developer has shared initial code and testing results on specific hardware, but comprehensive testing on varied systems remains ongoing. Additionally, questions about extending the interpreter with graphics, sound, or networking features are still open, as the current implementation focuses on core BASIC functionality.

Further development may reveal limitations or compatibility issues, and community feedback will likely shape future improvements.

Next Steps for Development and Community Engagement

The developer plans to release the source code publicly, inviting community testing and contributions. Future updates may include adding enhanced graphics, sound support, or networking capabilities. They also intend to document the project thoroughly to facilitate learning and experimentation. Monitoring community feedback and testing across different hardware platforms will be key to assessing the project’s robustness and potential for broader adoption.

Key Questions

Can this BASIC interpreter run on any UEFI-compatible PC?

It is designed to run on UEFI systems that support applications at the firmware level, but compatibility may vary depending on hardware and firmware implementation. Initial tests have been successful on certain systems, but broader testing is ongoing.

Does this project support graphics and sound?

Currently, the interpreter focuses on core BASIC features like line numbers, strings, and arrays. Support for advanced graphics or sound is not yet implemented but may be added in future updates.

Is the source code available for modification?

Yes, the developer has announced plans to release the code publicly on GitHub, encouraging others to experiment and contribute.

What are the educational benefits of this project?

It provides a low-level example of firmware programming, system initialization, and language implementation, making it valuable for learning about computer architecture and software development at the firmware level.

Are there similar projects for other vintage languages?

While some emulators and vintage OS projects exist, running a language like BASIC directly in UEFI is relatively novel. This project may inspire similar efforts for other languages or environments.

Source: hn