_EXTENDED_SYSTEM_INFORMATION

headersMetadatacopy
struct _EXTENDED_SYSTEM_INFORMATION {
    unsigned long ProcessorId;/* 0x0  4 */
    unsigned long ProcessorRevision;/* 0x4  4 */
    unsigned long ProcessorPageSize;/* 0x8  4 */
    unsigned long NumberOfPhysicalAddressBits;/* 0xc  4 */
    unsigned long MaximumAddressSpaceNumber;/* 0x10  4 */
    unsigned long ProcessorCycleCounterPeriod;/* 0x14  4 */
    unsigned long SystemRevision;/* 0x18  4 */
    unsigned char SystemSerialNumber[16];/* 0x1c  16 */
    unsigned char FirmwareVersion[16];/* 0x2c  16 */
};
/* computed from the NT 3.1 DDK headers */