Microsoft and IBM Release MS-DOS 4.0’s Source Code under the MIT License
Microsoft and IBM have released the 1988 operating system MS-DOS 4.0 on GitHub under the MIT License. In addition to the source code for MS-DOS 4, the public repository contains unreleased beta Multitasking DOS binaries, the ibmbio.com source, and the scanned PDFs of the Multitasking MS-DOS 4.0 (MT-DOS) documentation.
