That's pretty cool. Do you know if anyone's tried using that for embedded systems? It's been in the wild for a while. I know that Rodney Brooks developed L, a common lisp for embedded systems, but that was a more than a decade ago (http://citeseer.ist.psu.edu/712056.html)
There's a project called Hedgehog Lisp that's been used "in the wild" for embedded sensor systems. It's bytecoded, but the interpreter gets down to 20kb. It's not CL; it's got its own set of special forms and predefined functions, but it's a real Lisp:
You could also have a scout at the linux0.1 code - that has an implementation of vsprintf which is quite neat and tidy. You could copy that function then use it to implement printf()
I would be more interested in building a small practical operating system based on Linux, but with new user interface components (i.e. building your own configuration, terminal, and GUI portions).
This is smaller. Its probably more comparable to Nachos. Minix is a full featured UNIX with many features TCP/IP, Posix support, etc. That said, I'd rather learn (or possibly teach) from this code over Nachos.
Very nice tutorial(s). He links to Google, saying "There are plenty of resources out there if you know where to look." But here is something that takes the concept a bit further, already having done a bunch of "weeding" : http://www.zentu.net/oss/?q=forum/10.
BTW. If you or anyone else happens across some tools/etc. that aren't listed in that directory, please submit them! I think all the ones JamesM's tutorial mentions are in there somewhere, plus are there quite a few more.
Haven't been focusing so much on this aspect of my project, esp. not promoting it, but I think it's still useful -- namely for researching options that a perfunctory Google search that might not capture efficiently. Anyone is more than free to add a link relevant tutorials, wikis or forums at the directory.
