So (correct me if I'm wrong) in this case:
status = 0x81 signature = 0x49435000 PCI_SIGNATURE = 'PCI ' (which translates to 0x00494350)
from the definition #define PCI_SIGNATURE (('P' << 0) + ('C' << 8) + ('I' << 16) + (' ' << 24))
So (correct me if I'm wrong) in this case:
status = 0x81
signature = 0x49435000
PCI_SIGNATURE = 'PCI ' (which translates to 0x00494350)
from the definition
#define PCI_SIGNATURE (('P' << 0) + ('C' << 8) + ('I' << 16) + (' ' << 24))