Editing Common Hardware Reference Platform

{{Short description|System architecture for PowerPC-based computer systems}}
{{POWER, PowerPC, and Power ISA}}

'''Common Hardware Reference Platform''' ('''CHRP''') is a standard [[system architecture]] for [[PowerPC]]-based computer systems published jointly by [[IBM]] and [[Apple Inc.|Apple]] in 1995.  Like its predecessor [[PowerPC Reference Platform|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 [[Run-Time Abstraction Services|RTAS]] for machine abstraction purposes.

== History ==

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 (operating system)|Solaris]], and [[AIX (operating system)|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 operating system|AIX]], and small amount of Motorola PowerStack workstations.<ref>{{Cite web|title=2.1. Supported Hardware|url=https://www.debian.org/releases/jessie/powerpc/ch02s01.html.en|access-date=2021-09-30|website=www.debian.org|archive-date=2021-09-30|archive-url=https://web.archive.org/web/20210930111134/https://www.debian.org/releases/jessie/powerpc/ch02s01.html.en|url-status=dead}}</ref> Mac OS 8 contains support for CHRP<ref name="Mac OS 8 Sales">{{Cite web|url=https://www.apple.com/ca/press/1997/08/MacOS8Sales.html| url-status=dead | archiveurl=https://web.archive.org/web/20090423083234/http://www.apple.com/ca/press/1997/08/MacOS8Sales.html | archivedate=April 23, 2009 | title= Apple Sells 1.2 Million Copies of Mac OS 8; Best Software Product Sales Ever in First Two Weeks of Availability|access-date=October 1, 2017}}</ref> and [[New World ROM|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.

==See also==
* [[OpenPIC and IBM MPIC]]

== Notes ==

{{refs}}

== References ==

{{refbegin}}
* [https://public.dhe.ibm.com/rs6000/technology/spec/chrp/ CHRP Specification Version 1.0 and related documents]
* [https://public.dhe.ibm.com/rs6000/technology/spec/jointhrp.ps The PowerPC (TM) Hardware Reference Platform], an overview of CHRP
* {{Cite web |url=http://www.apple.com/ca/press/1997/08/MacOS8Sales.html |title=Apple Canada Press Release |access-date=October 9, 2007 |archive-url=https://web.archive.org/web/20090423083234/http://www.apple.com/ca/press/1997/08/MacOS8Sales.html |archive-date=April 23, 2009 |url-status=bot: unknown }}
* [http://mail-index.netbsd.org/port-powerpc/2002/08/06/0001.html PREP / CHRP / ofppc / macppc confusion] on NetBSD port-powerpc mailing list.
{{refend}}

==External links==
* [https://web.archive.org/web/20050204185329/http://penguinppc.org/otherhw/#chrp penguinppc.org description of CHRP]
* [http://www.firmworks.com/www/chrpdoc.htm FirmWorks CHRP page]
* [http://lowendmac.com/1997/motorola-starmax-6000/ Motorola StarMax 6000 at Low End Mac], A CHRP machine that never shipped.

[[Category:PowerPC mainboards]]
[[Category:IBM computer hardware]]