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1.11 PCI Backplane
The PCI backplane has four independent 64-bit, PCI buses, one at 33
MHz and three at 66 MHz. The PCI buses support 3.3 volt and 5 volt
options.
Figure 1–11 I/O Control Logic
Flash ROM
(NVRAM functions)
Interrupts
Config
P-chip 0
4 Slots (3 with Hot Plug)
C-chip
P-chip 1
2 Slots
No Hot Plug
PCI 2
66 MHz
Acer/Yukon HPC
PCI 0
33 MHz
Keyboard
COM1
Mouse
COM2
CD-ROM
Modem
Printer
Floppy
2 Slots
With Hot Plug
PCI 1
66 MHz
2 Slots
With Hot Plug
PCI 3
66 MHz
PK0319B
System Overview
1-19
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Troubleshooting
