Linux assembly links (for OS development)

http://www.cndw.com/tech/server/2006040533281.asp
http://blog.chinaunix.net/u/29291/showart_719305.html
http://www.mcuol.com/Tech/207/1289.htm
http://www.ubuntuchina.com/viewthread.php?tid=4781&extra=page%3D1
http://www.oldlinux.org/book_cn.html