>Osprey uses Vr4181, which is a different chip from vr4181a. Yeah I didn't notice the A on there. We are looking into the possibility of using the A in our board. Part of the problem is that the A only comes in BGA and we don't like dealing with that. >Interesting. I was trying to get RT-Linux working at one time >but aborted that effort in the middle. Getting RTAI working wasn't easy. Took over a week and it was supposedly already "ported." One of these days I really must find the time to check in my changes to that project. It works very well and is quite stable. I think 46 us worst-case interrupt response off one of the VR4181's interrupts from an external source is very good. Steve
