Asus A7V333: PCI_GOBIOS and PCI_GODIRECT disagree on one device

This is what PCI_GODIRECT says:

Bus 0, device 7, function 0:

    FireWire (IEEE 1394): PCI device 100c:8026 (Tseng Labs Inc) (rev 0).
      Master Capable.  Latency=16.
      Non-prefetchable 32 bit memory at 0x0 [0x7ff].
      Non-prefetchable 32 bit memory at 0x0 [0xffffffff].
      Non-prefetchable 32 bit memory at 0x0 [0xffffffff].

This is what PCI_GOBIOS says:

Bus 0, device 7, function 0:

    FireWire (IEEE 1394): PCI device 104d:8026 (Sony Corporation) (rev 0).
      Master Capable.  Latency=16.
      I/O at 0x0 [0x3].
      I/O at 0x0 [0x3].
      I/O at 0x0 [0xffffffff].
      I/O at 0x0 [0x3].
      I/O at 0x0 [0x3].
      Non-prefetchable 64 bit memory at 0x0 [0xffffffff].

This appears to be the only device where both methods differ. The IEEE device is not detected under Windows either. Is my mainboard broken?

Felix