_UTCR0
#define Ser1UTCR0 _UTCR0 (1) /* Ser. port 1 UART Control Reg. 0 */
#define Ser2UTCR0 _UTCR0 (2) /* Ser. port 2 UART Control Reg. 0 */
#define Ser3UTCR0 _UTCR0 (3) /* Ser. port 3 UART Control Reg. 0 */