typedef struct _MMPFNENTRY
{
    unsigned char PageLocation : 3;
    unsigned char WriteInProgress : 1;
    unsigned char Modified : 1;
    unsigned char ReadInProgress : 1;
    unsigned char CacheAttribute : 2;
    unsigned char Priority : 3;
    unsigned char Rom : 1;
    unsigned char InPageError : 1;
    unsigned char KernelStack : 1;
    unsigned char RemovalRequested : 1;
    unsigned char ParityError : 1;
} MMPFNENTRY, *PMMPFNENTRY;