http://www.NetBSD.org/ports/hpcarm/
http://www.ibm.com/developerworks/linux/library/l-ipaq/index.html
http://mstempin.free.fr/linux-ipaq/html_nochunks/Linux-iPAQ-HOWTO-1.1.html#BACKING-UP-BOOTLOADER
http://www.eecs.umich.edu/~panalyzer/
http://www.eecs.umich.edu/~panalyzer/sim-ipaq/sim_ipaq_readme.html
http://blogs.unbolt.net/index.php/brinley/2007/08/04/exploring_hp_ipaq_6515e_bootloader
http://gert-menke.de/jtag-howto/
http://ecos.sourceware.org/docs-3.0/redboot-guide/ipaq.html
http://www.balloonboard.org/balloon/balloon3/distro/test-v0.2/sources/balloonsvn/bootldr295/doc/install-via-osloader.html

RS232:
http://www.kronosrobotics.com/Zeus/IPAQcon.pdf
http://bevhoward.com/serial.htm
http://www.mail-archive.com/newbie@linux-mandrake.com/msg132363.html
http://web.archive.org/web/20050408063754/http://www.handhelds.org/pipermail/ipaq/2000-August/000061.html