Common Hardware Reference Platform
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Common Hardware Reference Platform (CHRP) was an early PowerPC hardware reference design. The predecessor to PReP, it was conceptualized as a design to allow various operating systems (especially Mac OS, Windows NT and various flavors of UNIX) to run on a common hardware platform. It did not catch on, and the only systems to ship with actual CHRP hardware were certain members of IBM's RS/6000 series machines running AIX. New World ROM Macintosh computers are partially based on CHRP/PReP.