struct _unnamed_1403// Size=0x4
{
    unsigned long Mask:1;// Offset=0x0 Size=0x4 BitOffset=0x0 BitSize=0x1
    unsigned long Polarity:1;// Offset=0x0 Size=0x4 BitOffset=0x1 BitSize=0x1
    unsigned long MessageType:3;// Offset=0x0 Size=0x4 BitOffset=0x2 BitSize=0x3
    unsigned long RequestEOI:1;// Offset=0x0 Size=0x4 BitOffset=0x5 BitSize=0x1
    unsigned long DestinationMode:1;// Offset=0x0 Size=0x4 BitOffset=0x6 BitSize=0x1
    unsigned long MessageType3:1;// Offset=0x0 Size=0x4 BitOffset=0x7 BitSize=0x1
    unsigned long Destination:8;// Offset=0x0 Size=0x4 BitOffset=0x8 BitSize=0x8
    unsigned long Vector:8;// Offset=0x0 Size=0x4 BitOffset=0x10 BitSize=0x8
    unsigned long ExtendedAddress:8;// Offset=0x0 Size=0x4 BitOffset=0x18 BitSize=0x8
};