UART_DLM_EM
case UART_DLM_EM:
return serial_in(up, UART_DLL_EM) | serial_in(up, UART_DLM_EM) << 8;
serial_out(up, UART_DLM_EM, value >> 8 & 0xff);
case UART_DLM_EM: /* DLM @ 0x28 (+9) */
case UART_DLM_EM: /* DLM @ 0x28 (+9) */