I decided to play a bit with my new mobile toy. The Nokia N900 should be capable of all kinds of things, including running a Java VM. After some googling, I found this page:
The instructions there seemed simple and straightforward, so I did as advised, downloaded the jdk package and extracted it onto the device, and then just copied abcl.jar over and ran it with the incantation that's usually found in the abcl wrapper script. The results are pretty good:
~ $ /opt/OpenJDK-camswl/bin/java -cp /home/user/abcl.jar org.armedbear.lisp.Main
Armed Bear Common Lisp 0.20.0-dev
Java 1.6.0_0 Sun Microsystems Inc.
OpenJDK Zero VM
Low-level initialization completed in 4.436 seconds.
Startup completed in 16.765 seconds.
Type ":help" for a list of available commands.
CL-USER(1): (format t "abcl rules!")
It runs obviously much slower than on any desktop, the device is not as powerful, and its i/o is slower which hurts autoloading. But it runs, and it is much easier to setup than java ever was on N800 and such, and it also runs much faster than the non-zero VMs on N800 did.