Tim,
>Could be a good platform for lab or any other diagnostic machine
>interfacing. Realtime OS's are good at what they do but typically
>lack features that you want on a desktop. It would be ideal to
>run your home security/entertainment/HVAC systems. <G>
With respect to a realtime-OS patch for linux, checkout Linux-SRT:
http://www.uk.research.att.com/~dmi/linux-srt/index.html
"Linux-SRT is a package which adds real time scheduling capabilities
to Linux. It is comprised of kernel modifications, a GUI, daemon,
control programs, and optional patches to XFree86 and Afterstep. The
system is aimed at users of desktop multimedia applications. Any
unmodified Linux program can be guaranteed a predefined Quality of
Service using this package."
Steve