Compaq ProLiant 4500 PCI Bus Numbering in a Microsoft Windows NT Environment - Page 7
primary PCI bus, through the PCI-to-PCI bridge on the controller, and finally to the PCI device.
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PCI Bus Numbering in a Microsoft Windows NT Environment 7 SDRAM DIMMs Pentium III Xeon Pentium III Xeon 133MHz RCC 3.0 133MHz controller RCC 3.0 controller 133MHz SDRAM DIMMs 33MHz/32-bit PCI slot 66MHz/64-bit PCI slots 33MHz/64-bit PCI slots Figure 2. Highly parallel PCI bus architecture in the ProLiant ML530 Figure 3. Triple-peer PCI bus architecture in the ProLiant 8000 PCI bridges are not limited to the computer system; controllers can include them also. Hardware manufactures such as Compaq include PCI bridges on controllers to help with signal integrity, enabling more devices to be added per system. Data transfers from the host bus, through the primary PCI bus, through the PCI-to-PCI bridge on the controller, and finally to the PCI device. For example, an intelligent device such as a Smart Array 4250ES Controller contains a PCI bridge. 13UK-1200A-WWEN