The original sources of MS-DOS 1.25, 2.0, and 4.0 for reference purposes ...

MS-DOS 1.25 was released in 1982-08 as the first general release to OEM customers other than IBM, so it was used by all the first clone manufacturers. Some OEMs labeled their release with different ...

That’s part of the reason that both companies have released the source code for certain versions, including MS-DOS 1.25, 2.11, and as of now, 4.0.

Microsoft has announced that it is open sourcing MS-DOS 4.0, in collaboration with IBM, who developed portions of the code. It will be available under the MIT license.

This isn't the first time Microsoft has released MS-DOS source code. Back in 2014, Microsoft open-sourced the MS-DOS source code for versions 1.25 and 2.0 via the Computer History Museum.

Multitasking was scrapped in later versions to make way for GUI operating systems like Windows. Microsoft already released MS-DOS 1.25 and 2.0 in 2014, in cooperation with The Computer History Museum.

The MS-DOS 4.00 code is available on Microsoft's MS-DOS GitHub page along with versions 1.25 and 2.0, which Microsoft open-sourced in cooperation with the Computer History Museum back in 2014.

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

This isn't the first time Microsoft has open-sourced MS-DOS, as its GitHub repository already has versions 1.25 and 2.0, which were originally shared at the Computer History Museum back in 2014.

Well, this came out of nowhere: Microsoft and IBM have open-sourced MS-DOS 4.0, a legacy command line OS the two worked on together over 40 years ago.

PC DOS and MS-DOS Installation Guide README.1ST Disadvantages of booting DOS in DOSBox-X External links Where to get DOS? DOS version highlights DOS versions 1.0-5.0x Microsoft MS-DOS 6+ IBM PC DOS 6+ ...

DEBUG .COM 12224 DOS 2.11 version of DUBUG for making patches. DEBUG1 .COM 5960 DOS 1.25 version. Used in .UNP and .FIX files DELETE .COM 768 Prompts before deleting each matching file. DELETE .DOC ...