I Have a Garmin 18x LVC connected to serial port 2, I added the GPS to /etc/npd.conf and can read the time. But when I use the command cu I also get the GPS Coordinates:
/dev # cu -l /dev/cuau1 -s 4800
Connected
$GPGGA,210312,1234.4321,N,1234.4321,E,1,05,2.4,9.1,M,45.6,M,,*45...