I had to make a few simple changes to Fuse to get it to work with the strange resolution framebuffer of the e3. If anyone wants to build Fuse themselves let me know and I'll post the patches here.
I'd certainly be interested :-) ... Cheers, Phil (Fuse author...)
Argh!! It's a small world! I better tidy up my dirty hacks before any posting takes place now....
Seriously though... nice work on libspectrum & fuse. Your code must be pretty efficient for it to be able to run on the E3 at anywhere near the original speed.