Hello! > Not a good idea to call illegall opcodes from user space :-) So, natfeats > need a clean API support in the kernel. A syscall. Ok. And which functions do you want to provide for user space applications? Ciao ...Frank -- ATARI FALCON 040 // MILAN 060 ----------------------------------------- http://www.cs.uni-magdeburg.de/~fnaumann/ e-Mail: fnaumann@freemint.de