Hi
I have tested your gpsdrive within pdaxqtrom before. The main trouble is the Z screen that is to short to see the details like speed, gps state.. I was able to move the windows to have only the map on the screen.
For the GPS, gpsd seems not needed (at least with my cheap USB GPS), i have set up (in Preferences ->"Setting 2" tab->) "Use serial comm" , /dev/ttyUSB0 , 4800 baudrate.
In order to work i had to change the owner of "/dev/ttyUSB0" to zaurus before launching gpsdrive (it is root by default when you plug in the GPS)