I think he was talking about http://technocrat.net/d/2008/6/11/43198 http://technocrat.net/d/2008/6/11/43198 where the three ways are: Separate CPU, Kernel un

I think he was talking about http://technocrat.net/d/2008/6/11/43198 http://technocrat.net/d/2008/6/11/43198 where the three ways are: Separate CPU, Kernel under a kernel, and User Mode More applicable to appliances and embedded software, than application software in general.