Microsoft has released the MS-DOS 4.00 source code, binaries, disk images, and documentation. The source code, which is ...

MS-DOS 4.0 is a relic from when IBM and Microsoft were in the throes of their joint OS/2 adventure. It was notable for its ...

Microsoft has once again made the source code of a version of its ancient MS-DOS operating system available for download.

In a celebration of innovation and preserving computing history, Microsoft has released the source code for MS-DOS 4.00 in ...

It has taken 38 years, but the source code of MS-DOS version 4.00 has been made available by Microsoft and IBM. The rationale ...

Microsoft has released the MS-DOS 4.00 source code, binaries, disk images, and documentation. The source code, which is nearly 45 years old, has been released under the MIT license, allowing ...

How did the operating system so bad it likely steered users to Linux 35 years ago come to be open-sourced now? Here's what ...

Ten years after releasing the source code of MS-DOS 1.25 and 2.0, Microsoft is making yet another contribution to the world ...

Microsoft and IBM have open-sourced MS-DOS 4.0, a legacy command line OS the two worked on together over 40 years ago.

The open source release also included the beta build and scanned documentation of MT-DOS 4.0 built primarily by Microsoft. MT ...