Messages in this thread |  | | | Subject | Re: RFC: Devices, buses and hotplug | | Date | Tue, 08 Jun 1999 16:50:27 -0700 | | From | Stephen Williams <> |
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jgarzik@pobox.com said: > AFAIK PCI is endian-independent. (I think I saw that in a post from > Martin Mares recently?) It is only that 99.999% of the PCI devices > out there are PC-centric and little endian.
No, PCI is little endian. AD[1:0] addresses BE0#, the low order byte, when addressing devices in I/O address space.
Memory mode devices do not interpret A[1:0] as address bits and instead must use the BE# signals. Same for configuration space.
However, for all the things we do nowadays, PCI is pretty much endian neutral in the domain of memory space. -- Steve Williams "The woods are lovely, dark and deep. steve@icarus.com But I have promises to keep, steve@picturel.com and lines to code before I sleep, http://www.picturel.com And lines to code before I sleep."
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