Microsoft open-sources “the earliest DOS source code discovered to date”

For students of early PC history, this isn’t even the first piece of 86-DOS history that has been newly rediscovered this ...

Microsoft open-sources 86-DOS 1.00, the ancestor of Windows

The source code for 86-DOS 1.00, the OS that eventually became MS-DOS and Windows, is now available on GitHub.

Microsoft Open Sources Some of the Earliest MS-DOS Code

Microsoft today announced the release of the source code for he 86-DOS 1.00 kernel, which is among the earliest code for what ...

Microsoft makes 86-DOS 1.00 open source on its 45th birthday

History painstakingly preserved.