COM_REG_RXDATA
[COM_REG_RXDATA] = AUCOM_RXDATA,
[COM_REG_RXDATA] = MIO_UART_RBR_OFFSET,
[COM_REG_RXDATA] = RA_UART_RBR,
CSR_READ_1(regsp, COM_REG_RXDATA);
put[0] = CSR_READ_1(regsp, COM_REG_RXDATA);
(void) CSR_READ_1(regsp, COM_REG_RXDATA);
[COM_REG_RXDATA] = com_data,
c = CSR_READ_1(regsp, COM_REG_RXDATA);
cin = CSR_READ_1(regsp, COM_REG_RXDATA);