Messages in this thread | | | Date | Sat, 14 Jan 2006 14:12:10 -0800 | From | "Randy.Dunlap" <> | Subject | Re: sbp2 address space |
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On Mon, 09 Jan 2006 22:41:45 +0100 Stefan Richter wrote:
> I wrote: > > Does PCIe provide a bigger host bus address space than PCI? > > PCIe obviously supports 64bit addressing. Do newer revisions of > conventional PCI support more than 32bit addressing? What about PCI-X? TIA.
PCI-X allows 32-bit or 64-bit transfers. IIRC, PCI conventional supports 64-bit by "DAC" == dual-address cycle, basically 2 32-bit transfers.
> [sbp2 depends on a <= 32bit address space of the host bus. Single-chip > FireWire PCIe adapters are available now but I believe they are merely > based on a PCI FireWire link layer controller plus PCI-PCIe bridge.]
The PCI specs cost money, else we could just download and read them. :(
Google found some hits, mostly marketing-speak, and this 1394b PCI-64bit host controller: http://tekgems.com/Products/MJ-FW-PCI-13.htm
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