Mac OS X serproxy installation instructions
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1. Follow the UNIX installation instructions in INSTALL-unix

2. Determine the serial device used by your adapter. Connect 
   your device, then, from the Terminal, type: ls /dev/tty.*
   and look for something besides /dev/tty.modem
   
3. Assign this device to one of the serial_device's in serproxy.cfg

4. Connect to the net_port associated with the serial_device
