Hi, Where can i get the addresses of the x86 registers and ports. and i am following the book "Linux Device Drivers" third edition by rubini. but there it is given a link for source code of the book.But i am unable to get the source code.Is there any way to get the source code of the book thanks in advance raja -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/