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- Path: news.jersey.net!usenet
- From: dhaynie@zeus.jersey.net (Dave Haynie)
- Newsgroups: comp.sys.amiga.misc,comp.sys.be
- Subject: Re: 1995 Production Status?
- Date: Wed, 24 Jan 1996 10:01:10 GMT
- Organization: InterActive Network - Serving SNJ - SLIP/PPP/SHELL
- Message-ID: <4e7kfg$12d@hermes.jersey.net>
- References: <4de07p$bbo@bandit.cyberwar.com> <6903.6590T111T2506@ci.educ.lu> <4dk1mb$e97@Starbase.NeoSoft.COM> <4dp18h$1uq@murphy.servtech.com> <mipsyssw-2301961619070001@cyber55.imaginet.fr>
- NNTP-Posting-Host: pipper165.jersey.net
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-
- mipsyssw@platina.fr (Raphael MOLL) wrote:
-
- >In article <4dp18h$1uq@murphy.servtech.com>, nyle@cyber1.servtech.com
- >(nyle landas) wrote:
-
- >> Well since AmigaDos is going CHRP it'll run on the BeBox if Be makes the
- >> BeBox CHRP compliant which it mentioned. The same goes for the BeOS if Be
- >> makes it CHRP compliant it'll run on the upcoming Power Amigas.
-
- >I still can't believe that this will be so easy...
-
- No one said it was easy. It was what, three or more years between the
- PReP and CHRP (PPCP) specifications. CHRP also requires more than the
- traditional (in the PClone market) software support from the system
- board vendor.
-
- >How can the CHRP specifications be so well-designed that any OS will find
- >the way to use the chips of a CHRP platform ?
-
- CHRP defines three basic methods for dealing with the hardware
- resources. Certain hardware mechanisms are defined by the CHRP
- architecture, in terms of register-level definitions; these must be
- there, they can't be changed. This is one reason why real live CHRP
- systems are just now becoming possible.
-
- A second level of motherboard resources live under the RTAS (Run-Time
- Abstraction Services) system. These services allow
- hardware-independent interaction with NVRAM, clocks, PCI, power
- management, cache control, and SMP.
-
- >Does CHRP means that there can't be ANY custom, specialized chip on the board ?
-
- The final level is Open Firmware (which itself is managed by RTAS).
- Open Firmware is a CPU-independent device driver specification, based
- on Forth and now a standard driver type under PCI. Custom resources
- live on the PCI bus and are supported via Open Firmware drivers.
-
- And of course, it's possible to have OS-specific drivers for things,
- too.
-
-
- Dave Haynie | Hardwired Media | dhaynie@zeus.jersey.net
- Make a little birdhouse in your soul - T.M.B.G.
-
-