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

With the release of Visual Studio 2010 and the .NET Framework 4, it's time for Visual Basic developers to start leveraging the new capabilities of Visual Basic 2010.

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

Microsoft has released the GW-BASIC source code because having open-sourced MS-DOS people wanted it to do the same with Microsoft BASIC.