Screenshots of Old Desktop OSes
(news.ycombinator.com)
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Microsoft open-sources "the earliest DOS source code discovered to date"
(arstechnica.com)
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What Happened to Gem?
(news.ycombinator.com)
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I don't know Apple's endgame for the Fn/Globe key–or if Apple does
(news.ycombinator.com)
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AMD Am386 released March 2, 1991
(news.ycombinator.com)