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.

In 1977, Commodore licensed BASIC for $25,000 as a one-time payment, securing perpetual use without royalties.

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

Microsoft has open-sourced the 6502 BASIC programming language interpreter from 1976. Its source code is now available on ...

Microsoft announced that it has open sourced the source code for 6502 BASIC, one of first ports of its original BASIC.

Thus, an examination was in order to figure out just how this BASIC implementation worked, and whether it shared anything with Microsoft’s own effort.

The repository concerns the Microsoft 16K BASIC Interpreter as built for the Motorola 6809, as used in the Dragon 64 computer. This is also known as BASIC-69 or Extended Color Basic.