I've commited 3 button emulation code patch, which was provided
by Matthew Orgass. I've rebuilt Xhpc binary and put it on:

ftp.netbsd.org:/pub/NetBSD/arch/hpcmips/tmp/Xhpc.20000729.tgz

With this server,

  - just touch = click left button
    ([win] + touch + 1 will works too.)
  - [win] + touch + 2 = click middle button
    ([win] + 2 + touch will works too.)
  - [win] + touch + 3 = click right button
  - Also, you can use 4th and 5th button.

[win] means the key marked with the Microsoft Windows symbol.

Takemura