System Overview 1-17
The five sections on the system motherboard are:
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The system bus or the CPU and Memory backplane.
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The power control logic.
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The server control logic.
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The system bus to PCI bus bridges.
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The PCI backplane containing two PCI busses, an EISA/ISA bus, a built-in CD-
ROM controller, and an XBUS with several devices integral to the system on it.
