Altera Arria V Avalon-MM Manual do Utilizador Página 151

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BIOS Enumeration Issues
Both FPGA programming (configuration) and the initialization of a PCIe link require time. Potentially,
an Altera FPGA including a Hard IP block for PCI Express may not be ready when the OS/BIOS begins
enumeration of the device tree. If the FPGA is not fully programmed when the OS/BIOS begins its
enumeration, the OS does not include the Hard IP for PCI Express in its device map.
You can use either of the following two methods to eliminate this issue:
You can perform a soft reset of the system to retain the FPGA programming while forcing the OS/
BIOS to repeat its enumeration.
You can use CvP to program the device.
13-4
BIOS Enumeration Issues
UG-01105_avmm
2014.12.15
Altera Corporation
Debugging
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