Identifying onboard PCI device

Hi all,

I have customized tool that displays PCI device information (something similar to the linux - "lspci") . Now, I need to display information only on "plug-in" cards. Are there any ways to distinguish between "on-board" PCI device and a PCI "plug-in" card.

Thanks,
Dhilip

Waht hardware and OS are you talking about?

The hardware is a Intel server board. The OS that I'm using is SVR4.2 MP-RAS UNIX.