I have tried to mmap  Advantech's PCM3680 CAN board I/O space into memory on the Diamond Athena III board until I am 
blue in the face (no, seriously, BLUE! It's not pretty). There are no resource conflicts that I can ascertain - no 
conflicting irqs or bae addresses.  I am using QNX 6.4.1.  The odd thing is: I can address the Advantech board just fine
, using the same software and OS, on an older Pentium M CPU.  Does anyone know of any "gotchas" for the Athena II/III? 
That is, dos the ISA bus require some setup I don't know about or something else?  Thanks for any advice!