> From: Johan Rydberg <johan.rydberg@netinsight.se> > Subject: Re: User context-switching! > > What I request is a building block that simplifies the creation of a > time-shared operating system, such as linux, netbsd, mach, ... i.e, "pcb" > under Mach. Why don't you take a look at this page, and wander around the links for a bit. You might find answers to your questions ... http://www.cs.utah.edu/flux/oskit/oskit-users.html Lbs