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Go backRISC OS

Forerunner to RISC OS, for the earliest Acorn Archimedes machines.

Released in 1987 by Acorn Computers Link points to external site.

87 ArthurOS
12 Sep 87 ArthurOS 1.2 (13 screenshots)

Apr 89RISC OS 2
Detailed timeline
Featured edition
Desktop with applications in ArthurOS 1.2
ArthurOS 1.2
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Did you know...

By the second version of ArthurOS, Acorn decided to rename it RISC OS because of the movie “Arthur 2: On the rocks,” which just premiered in the cinemas.

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Copyright © 2002-2006 Marcin Wichary, unless stated otherwise.