IBM originally approached Digital Research in 1980, seeking an x86 version of CP/M.
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Although CP/M had dominated the market since the mid-1970s, and was shipped with the vast majority of non-proprietary-architecture personal computers, the IBM PC in 1981 brought the beginning of what was eventually to be a massive change. History Origins in CP/M ĭigital Research's original CP/M for the 8-bit Intel 8080- and Z-80-based systems spawned numerous spin-off versions, most notably CP/M-86 for the Intel 8086/ 8088 family of processors. 1.6 Novell DOS 7 / Contribution by Novell.1.4 DR DOS 6.0 / Competition from Microsoft.As ownership changed, various later versions were produced with names including Novell DOS and Caldera OpenDOS. Kildall's Digital Research and derived from Concurrent PC DOS 6.0, which was an advanced successor of CP/M-86. Upon its introduction in 1988, it was the first DOS attempting to be compatible with IBM PC DOS and MS-DOS (which were the same product sold under different names).ĭR-DOS was developed by Gary A. Mixed primarily closed-source, some versions open-sourceħ.01.08 / 21 July 2011 11 years ago ( )Įnglish, older versions also in German, French, Italian, Spanish, JapaneseĭR-DOS (written as DR DOS, without a hyphen, in versions up to and including 6.0) is a disk operating system for IBM PC compatibles.
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