A question about interrupt router

["Bravo H" <bravohan@hotmail.com>]

Happy new year! Everyone,

I am studing PCI and come across this problem,

Here is the dump of the Interrupt Routing Table in the BIOS ROM,
C:\>debug
-d f000:4da0
F000:4DA0  24 50 49 52 00 01 A0 00-00 0F 00 00 66 11 25 02   
$PIR........f.%.
F000:4DB0  00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 DD   
................
F000:4DC0  00 78 01 B8 DE 00 00 80-00 00 00 00 00 00 00 00   
.x..............
F000:4DD0  01 78 15 B8 DE 16 B8 DE-17 B8 DE 14 B8 DE 01 00   
.x..............
F000:4DE0  01 70 16 B8 DE 17 B8 DE-14 B8 DE 15 B8 DE 02 00   
.p..............
F000:4DF0  01 68 17 B8 DE 14 B8 DE-15 B8 DE 16 B8 DE 03 00   
.h..............
F000:4E00  01 60 14 B8 DE 15 B8 DE-16 B8 DE 17 B8 DE 04 00   
.`..............
F000:4E10  00 08 10 B8 DE 10 B8 DE-10 B8 DE 10 B8 DE 00 00   
................
F000:4E20  01 10 14 B8 DE 00 B8 DE-00 B8 DE 00 B8 DE 00 00   
................

So there should be a interrupt router on Bus00 with Dev01, Fun07, 
VendorID1166, and DeviceID0225. But there is no such PCI device as indicated 
by 'lspci' on Linux, and PCIScope on Win2K. I also used some other PCI 
utilities, but could not find this router either. Could anyone please help 
me understand this situation?

Best Regards,

Bravo



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