I just got the TrackPoint code ported over to work with the CVS sources.
I've put it up on my NetBSD page:

  http://www.student.math.uwaterloo.ca/~gl2hughe/hpcmips/

and it's first on the list (vrdsiu-z50tp-netbsd-20020405A.tar.gz).

I just got this to work on my z50 about 30 minutes ago, so it hasn't
been thoroughly tested yet.  If the TP driver worked for you on older
kernels, the port should work with the current one.

Again, sorry for the long delay in getting this done!

- Greg