http://wiki.osdev.org/Serial_ports
http://wiki.zh-kernel.org/project/linux-acpihttp://udpcast.linux.lu/mkimagedoc.htmlhttp://linuxguy.org/docs/linuxdisk/build floppy linux
http://ljh.ee.nchu.edu.tw/~cch/program/fdlinux.html
http://hi.baidu.com/magicfrog/blog/index/5