joystick issue

i've got 2 different joysticks and they seem to be returning different values for the same movements.

;if saitek
x#=JoyRoll()
z#=-JoyZ()*180 ; now goes from 180 to -180 just like joyroll.

;if rumblepad
x#=JoyZ()*180 ; now goes from 180 to -180 just like joyroll.
z#=-JoyRoll()

is this kind of thing normal? is there a way to detect the joystick that's inserted, by name? or is the gamer somehow to supposed to configure for this? I really want my game to work out of the box as much as possible.

This is normal. You can provide for your gamer a config screen. I don't know if it's possible to detect what kind of joystick is available but even if you knew, it would still be curteous to the gamer if you provided a config screen.

Here is an example on how to configure different joypads.

http://www.blitzbasic.com/codearcs/codearcs.php?code=1592