PCI Bus Numbering in a Microsoft Windows NT Environment

PCI Bus Numbering in a Microsoft Windows NT Environment 6
13UK-1200A-WWEN
PCI Architecture and Bridged Controllers
There are four primary bus expansion schemes for PCI systems, namely the PCI-to-PCI bridge
architecture, Dual-Peer PCI Bus architecture (see Figure 1), Highly-Parallel Bus architecture (see
Figure 2), and Triple-Peer PCI Bus architecture (see Figure 3). The Compaq servers discussed in
this white paper and used in the Integration Lab testing include these PCI architecture system
designs. Refer to the “Compaq Server and Option Hardware” section of this white paper for more
information.
ISA
Slot
SuperIO
Controller
OSB4
4 x 32-Bit PCI Slots
2 x 64-Bit
PCI Slots
Server Feature Card
in 32-bit PCI slot
267 MB/s
133 MB/s
133MHz
1.06GB/s
133MHz
1.06GB/s
133MHz FSB
Pentium III
133MHz FSB
Pentium III
133MHz
SDRAM
DIMMs
RCC 3.0
PCI/Memory
Controller
Figure 1. Dual-peer PCI bus architecture in the ProLiant ML350