Re: some help here please
José Salavert Torres wrote:
Well this is not an error or question about linux but I thought that ths
was the best place to ask.
I'm searching for information about powermacs architecture in order to
make a work for the University and It's eery difficult for me to find
information related to last powermacs and PPC 7455:
-Memory map (directionable bytes...),
It's PCI, you can map (most) stuff where you want it.
> memory achitecture (CAS/RAS etc
this is like pc's DDR I hope where to find).
It _is_ the same memory as used in most x86 machines.
See the specs from Apple on what exactly on what machine.
-Input/output, interruptions treatment.
It uses OpenPIC; if anyone can find me a spec for that...
-Altivec.
See simdtech.org
-Caché behaivour(write through, write back) for the three levels.
Mentioned in the 7455 User Manual.
-DMA controllers and other pheripheral controllers (keylargo).
There is no (public) spec for KeyLargo; you might want to search
the web for a document called "MacTech.pdf" though, it describes
some older Apple I/O chip used in CHRP.
I just ask because I think that people that works in the kernel may
know. I've found some information in developer.apple.com and in
motorola's webpage (semiconductors section).
You can read the kernel for some info; also try the Darwin
kernel.
I will join all the urls to make a source of all about this. I think
this is more necesary than my work.
I need to the name of a document that apple made about making clone macs
from oher companies, I don't remembeer the name and I lost it :-(
Apple Technology in the Common Hardware Reference Platform, perhaps?
It's the MacTech.pdf mentioned above.
Segher
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