Timer
RxStatus = 0x18, Timer = 0x1A, TxStatus = 0x1B,
RxStatus = 0x18, Timer=0x1A, TxStatus = 0x1B,
RxStatus = 0x18, Timer=0x1A, TxStatus = 0x1B,
Timer = 0x48, /* A general-purpose counter. */
typedef u_long Timer ;