Microsoft called the code—written by the company’s founder, Bill Gates, and its second-ever employee, Ric Weiland—”one of the ...

Microsoft’s 6502 BASIC ran on the same CPU that powered the Apple II, Commodore 8-bit series, NES, and Atari 2600.

Microsoft publishes the original 6502 BASIC source code from 1976 for the first time as open source – a milestone in the history of the company and its software ...

"Rick Weiland and I (Bill Gates) wrote the 6502 BASIC," Gates commented on the Page Table blog in 2010. "I put the WAIT ...

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Did you know that, between 1976 and 1978, Microsoft developed its own version of the BASIC programming language? It was initially called Altair BASIC before becoming Microsoft BASIC, and it was ...

Microsoft released the source code for ' Microsoft BASIC for 6502 Microprocessor - Version 1.1 ' as open source on September 3, 2025. While the 6502 BASIC source code had previously been distributed ...

A few months after releasing the Altair BASIC source code, Microsoft has shared another cornerstone of its early software success. The company announced that 6502 BASIC ...

Microsoft has finally open-sourced one of its oldest products: 6502 BASIC. The source code for Microsoft BASIC Version 1.1 for the 6502 microprocessor is now available on the Redmond giant's GitHub ...

That was almost 50 years ago; since then, Microsoft has embraced open-source software. In recent years, Microsoft has started releasing some of its classic operating systems and programs as open ...