In 2008/9 I ported linux to my new HP iPAQ 214 (Also known as iPAQ 210).
All the details are now here:
http://www.oliford.co.uk/hpipaq214/moinBasicCopy/HpIpaq214.html
This was all on the handhelds.org wiki, but it appears to now be
broken:
http://www.handhelds.org/moin/moin.cgi/HpIpaq214
My notes and files are here:
public/
I also installed a serial port:
public/serial/
Oliver Ford