This article presents a timeline of events in the history of x86 DOS disk operating systems from 1973 to. Other operating systems named " DOS" are generally not part of the scope of this timeline. DOS releases have been in the forms of: OEM adaptation kits ( OAKs) – all Microsoft releases before version 3. 2 were OAKs only; Shrink wrap packaged product for smaller OEMs ( system computing, the DOS Protected Mode Interface ( DPMI) is a specification introduced in 1989 which allows a DOS program to run in protected mode, giving access to many features of the new PC processors of the time not available in real was initially developed by Microsoft for Windows 3. 0, although Microsoft later turned control of the specification over to an industry committee with.
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