Reading Joystick Position

[Simon Williams <DONTemail@luddite.ca>]

I'm having some problems figuring this out:

In Applesoft PDL(0) and PDL(1) are the X & Y coordinates of the
joystick, but I can't figure out the actual memory locations for these.
According to most of the information I have available I should be able
PEEK somewhere between 49252-49255, but these locations do not return
the same values and don't seem to be related at all to the joystick.
FWIW the joystick I'm using is a QuickShot which has an Apple setting
switch, and works perfectly for all games and programs I've tried (which
is why I assume the problem is with me and not the hardware).

Any help with this would be much appreciated.