XIRCREG_CR
PutByte(XIRCREG_CR, ClearRxOvrun);
PutByte(XIRCREG_CR, RestartTx); /* restart transmitter process */
PutByte(XIRCREG_CR, EnableIntr); /* re-enable interrupts */
PutByte(XIRCREG_CR, TransmitPacket|EnableIntr);
PutByte(XIRCREG_CR, SoftReset); /* set */
PutByte(XIRCREG_CR, 0); /* clear */
PutByte(XIRCREG_CR, EnableIntr);
PutByte(XIRCREG_CR, 0); /* disable interrupts */
PutByte(XIRCREG_CR, 0);