Coherent: Difference between revisions

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[[Image:Coherent 4 print ad.jpg|200px|thumb|right|A print Coherent ad]]
[[Image:Coherent 4 print ad.jpg|200px|thumb|right|A print Coherent ad]]


Coherent was a 'clean room' clone of [[Seventh Edition Unix|Unix v7]]. It was ported to various CPU's in the 1980's and was somewhat famous for being audited by bell labs and was vetted to be free of AT&T code.  Despite it's low price it failed to achieve any significant market share.
Coherent was a 'clean room' clone of [[Seventh Edition Unix|Unix v7]], originally written for the PDP-11 in 1980. It was ported to run on the IBM PC in 1983 and to the [[Zilog Z8000]]-based [[Commodore 900]] in 1985. Coherent was somewhat famous for being audited by Bell Labs and was vetted to be free of AT&T code.  Despite its low price it failed to achieve any significant market share.
 
A review from 1991 can be found [http://aplawrence.com/Reviews/coherent_1991.html here]


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Revision as of 12:04, 28 December 2012

A print Coherent ad

Coherent was a 'clean room' clone of Unix v7, originally written for the PDP-11 in 1980. It was ported to run on the IBM PC in 1983 and to the Zilog Z8000-based Commodore 900 in 1985. Coherent was somewhat famous for being audited by Bell Labs and was vetted to be free of AT&T code. Despite its low price it failed to achieve any significant market share.

A review from 1991 can be found here