Enhanced Serial Port Support for os-9 and mac os-x, unix (FreeBSD, linux). Gives the ability to control most aspects of the port plus for rs232c devices the ability to manage the pins. Subclasses the existing SerialPort class but requires a VM or plugin that supports the platform specific enhanced serial port calls. Hint the os-x part is really BSD unix, thus a plugin for Linux/*BSD on intel can't be far away. USB devices should be supported as unix serial devices if your device pretends to be a old fashion serial device