Hi there, I'm implementing a RT driver (RTL2.0 ,Kernel 2.2.13) and I'm not sure that I can use "jiffies" in it (I'm using these for detecting time outs). Should I not use some rtl specific call to do that? Same question concerning the linux "udelay" call. Can someone help me on this topic ? Thanks in advance, Alain Rolle Dept. of Information Technology at the university of Ghent, Belgium.