In a significant move for computing history enthusiasts and developers, Microsoft has formally released the assembly language source code for its seminal 6502 BASIC. This development comes after decades of the code existing in various unofficial forms across the internet, finally granting it a clear, modern open-source license. Developed in 1976 by Microsoft co-founder Bill Gates and early team member Ric Weiland, 6502 BASIC was designed to run on the 6502 CPU, a processor that powered an array of iconic early personal computers and gaming consoles, including the Apple II, Atari 2600, Nintendo Entertainment System, and the Commodore 8-bit series.
The decision to open-source this historically important software reflects Microsoft's commitment to acknowledging its deep roots in the software industry and supporting the vibrant community of preservationists and hobbyists. This early version of BASIC was instrumental in standardizing programming language implementations and made coding accessible to a broad audience, enabling the first generation of developers to learn programming on machines like the Commodore by simply typing commands such as \"10 PRINT 'HELLO'\" and \"20 GOTO 10.\" This open release further complements Microsoft's prior open-sourcing of GW-BASIC, another descendent from the same foundational lineage, which was embedded in the original IBM PC's ROM.
The enduring fascination with early software and the MOS 6502 CPU remains strong, even nearly half a century later. Enthusiasts actively engage in projects involving FPGA-based re-creations and emulators, demonstrating a persistent interest in understanding and interacting with these foundational technologies. Microsoft notes that dedicated preservationists have tirelessly reconstructed build environments to ensure the historical source code can still produce byte-exact ROMs. This open-source initiative not only formalizes access to this crucial piece of software history but also underscores the continuous relevance of legacy code in inspiring future innovations and fostering a deeper appreciation for the origins of modern computing.
The open-sourcing of Microsoft's 6502 BASIC is more than just a historical footnote; it is a profound testament to the power of foundational technologies and the enduring spirit of innovation. By making this integral part of computing history accessible, Microsoft empowers new generations to explore the building blocks of software, fostering a deeper understanding of how the digital world came to be. This act of sharing reinforces the idea that knowledge, especially in technology, thrives when it is openly accessible, encouraging continued learning, experimentation, and collaborative development for the betterment of all.
