CODEWITHSUNDEEP
pcipci-e
v123
v123

Reputation: 383

How does BIOS determine the type of device during PCI Express Bus Enumeration?

During the PCI Express Bus enumeration, How does BIOS figure out the type of the device i.e. whether its a PCI or PCI express device?

Upvotes: 0

Views: 396

Answers (1)

prl
prl

Reputation: 12435

A PCI Express device must have a capability list and must have the PCI Express capability—capability ID 0x10.

Upvotes: 1

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