In a significant move for retro computing enthusiasts and software historians, Microsoft has 공개 the full source code of its classic 1978 BASIC interpreter for the 6502 processor. The code, amounting to nearly 7,000 lines of assembly language, is now available on GitHub under an MIT license, enabling developers and hobbyists worldwide to explore, modify, and distribute this foundational piece of personal computing history.

Reviving a Key Piece of Computing Heritage

This release includes the complete source for Microsoft BASIC for 6502 Version 1.1, the interpreter that powered iconic early home computers such as the Commodore PET, VIC-20, Commodore 64, and Apple II. These machines played a pivotal role in bringing computing into homes and classrooms during the late 1970s and early 1980s. The code was originally written by Microsoft founders Bill Gates and Rick Weiland, with Gates himself recalling his contribution, including the addition of the “WAIT” command, in a 2010 blog post.

First Programming Experiences for Millions

For many early computer users, Microsoft BASIC was their first programming language. It allowed users to write simple programs with commands like “10 PRINT ‘HELLO'” and “20 GOTO 10″—creating endless loops of text and offering a hands-on introduction to coding. This interpreter translated human-readable instructions into machine operations, empowering a generation to experiment with programming directly on their personal computers.

Impact and Preservation of Computing History

The open-sourcing of this historic code provides valuable insight into early software development practices and the foundations of modern programming languages. It also offers educational opportunities for students, hobbyists, and researchers interested in computer architecture and software engineering. Microsoft’s initiative aligns with ongoing efforts to preserve and celebrate the roots of the personal computer revolution, accessible through official resources such as the [Microsoft GitHub repository](https://github.com/microsoft).

For further exploration, resources like the [Computer History Museum](https://www.computerhistory.org/) and official documentation on the 6502 processor can deepen understanding of this transformative era in technology.

Ethan Cole

I'm Ethan Cole, a tech journalist with a passion for uncovering the stories behind innovation. I write about emerging technologies, startups, and the digital trends shaping our future. Read me on x.com