Trying to get USB memory stick to work.
Using QNX 4.25 with USB 2.0 package installed.
Using Ampro motherboard (82801 DBM I/O hub) with both USB v2.0 EHCI and UHCI v1.1.
Using
   #io-usb
I get the 'usb' entry under /dev (this is the stack/driver?)
Using 
   #usb
I can see either a full speed USB memory stick under the UHCI interface, or a high speed under the EHCI interface. 
Then trying the 
   #Fsys.umass
it seems to recognize the device and there are no errors, but no new device like 'usb0' shows up.
Is there a trick to this final step to get the device available?

Process list seems fine (have io-usb and Fsys.umass).
I have tried numerous combinations, but nothing changes.  Always get the usb stack, but nothing more.