uCLinux
The reason I'm looking into the H8 is because it is capable of holding flash memory which I think would be useful. I am probably going to use **broken link removed** which although it isn't realtime (I don't think it is, anyway), it still is very small and **broken link removed**. An operating system looks good because I don't know of any other way to have self-modifying code without a ton of hassle: dealing with a file system without an OS. Also, there are more possibilities that would be great to have lying around for the future like a miniature webserver or speech capabilities (which can be built in to some linux kernels).
Thanks again,
Chris