- long bt_csn; /* cartridge serial number */
- u_short bt_mbz; /* unused; should be 0 */
- u_short bt_flag; /* -1 => alignment cartridge */
+ int32_t bt_csn; /* cartridge serial number */
+ u_int16_t bt_mbz; /* unused; should be 0 */
+ u_int16_t bt_flag; /* -1 => alignment cartridge */