typedef enum _WHEA_ERROR_STATUS_FORMAT
{
         WheaErrorStatusFormatIPFSalRecord = 0,
         WheaErrorStatusFormatIA32MCA = 1,
         WheaErrorStatusFormatEM64TMCA = 2,
         WheaErrorStatusFormatAMD64MCA = 3,
         WheaErrorStatusFormatPCIExpress = 4,
         WheaErrorStatusFormatNMIPort = 5,
         WheaErrorStatusFormatOther = 6,
         WheaErrorStatusFormatMax = 7
} WHEA_ERROR_STATUS_FORMAT;

Windows Vista Kernel Structures