GitHub - microsoft/MS-DOS: The original sources of MS-DOS 1.25, 2.0, and 4.0 for reference purposes
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The original sources of MS-DOS 1.25, 2.0, and 4.0 for reference purposes - microsoft/MS-DOS
  • MacN'CheezusEnglish
    4•22 days ago

    Perhaps, if there are some very specific compatibility issues that haven’t been solved yet.

    That said, MS-DOS 4 isn’t even the most recent version, the last one was 6.22 to my knowledge, and IIRC a lot of games tended to require at least version 5 or 6.