I've already ported this, it was far too slow and wanted to use lots and lots of memory iirc. I did think I'd talked about this on ITT a long time ago (when the N800 first came out), but perhaps not.

I used http://lpg.ticalc.org/prj_tiemu/, there are even Debian source packages (i.e. in the main Debian repos) these days for you to build from. Should be pretty easy.

I imagine it will still be awfully slow though. Using the wayback machine you may be able to get some notes about building it (for the Zaurus) from this page: http://zaurus.maxg.info