001package jmri.jmrix.xpa; 002 003import jmri.SystemConnectionMemo; 004 005/** 006 * Abstract base for classes representing an XPA+Modem communications port 007 * 008 * @author Paul Bender Copyright (C) 2004 009 */ 010public abstract class XpaPortController extends jmri.jmrix.AbstractSerialPortController { 011 // base class. Implementations will provide InputStream and OutputStream 012 // objects to XpaTrafficController classes, who in turn will deal in messages. 013 014 protected XpaPortController(SystemConnectionMemo connectionMemo) { 015 super(connectionMemo); 016 } 017}