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PCIe-PXIe-8638 and PXI Express chassis. If PCI bus num-
bers are occupied, the system may not boot correctly, or
devices will not be detected.
Theoretically, PC systems implementing PCI Express can
support up to 256 bus numbers. However, the maximum
PCI bus numbers of many PC systems are frequently lim-
ited by the system BIOS based on the system design or
architecture. Conversely, the PXI Express chassis con-
sumes many PCI bus numbers. Each PXI Express periph-
eral slot reserves a PCI bus number, and PCI Express
switches on a PXI Express chassis also occupy several PCI
bus numbers. Some peripheral modules may also consume
PCI bus numbers. PCI bus number requirements for
ADLINK PXI Express chassis are as shown.
Table A-1: PCI Bus Number Requirements
Figure A-1: Bus Number Information Result
Model
PCI Bus Number
Requirement
PCIe-PXIe-8638 + PXES-2590
27
PCIe-PXIe-8638 + PXES-2780
44
Содержание PCIe-PXIe-8638 Series
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