Common Hardware Reference Platform
|POWER, PowerPC, and Power ISA architectures|
|Freescale (formerly Motorola)|
|Cancelled in gray, historic in italic|
Common Hardware Reference Platform (CHRP) is a standard system architecture for PowerPC-based computer systems published jointly by IBM and Apple in 1995. Like its predecessor PReP, it was conceptualized as a design to allow various operating systems to run on an industry standard hardware platform, and specified the use of Open Firmware and RTAS for machine abstraction purposes. Unlike PReP, CHRP incorporated elements of the Power Macintosh architecture and was intended to support the classic Mac OS and NetWare, in addition to the four operating systems that had been ported to PReP at the time (Windows NT, OS/2, Solaris, and AIX).
CHRP did not receive industry-wide adoption, however. The only systems to ship with actual CHRP hardware are certain members of IBM's RS/6000 series running AIX. Mac OS 8 contains support for CHRP and New World Power Macintosh computers are partially based on CHRP and PReP.
Power.org has a new Power Architecture Platform Reference (PAPR) that provides the foundation for development of Power ISA-based computers running the Linux operating system. The PAPR was released fourth quarter of 2006.
- "Apple Sells 1.2 Million Copies of Mac OS 8; Best Software Product Sales Ever in First Two Weeks of Availability". Archived from the original on April 23, 2009. Retrieved October 1, 2017.
- CHRP Specification Version 1.0 and related documents
- The PowerPC (TM) Hardware Reference Platform, an overview of CHRP
- Apple Canada Press Release at the Wayback Machine (archived April 23, 2009)
- PREP / CHRP / ofppc / macppc confusion on NetBSD port-powerpc mailing list.