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

Microsoft has officially open-sourced its 6502 BASIC. The version published today is BASIC M6502 8K Version 1.1.

Microsoft’s version of BASIC was one of the first programming languages that the general public came into contact with, ...

Microsoft BASIC for 6502 Microprocessor - Version 1.1 source code is now available on Github, under the MIT license.