Hello, Can someone please explain me the concepts of IOMEM? To my understanding CPU allocates IOMEM to the I/O ports on the devices. The resources allocated are always greater than that of Memory. i.e if memory has iomem of 0x00000000 - 0x0009bff - Main Memory 0x00100000 - 0x100100 - Dev A .. and so on but in that case if Main memory is 4GB, what would be the iomem for the other devices. Thanks, Sarah __________________________________________________ Do You Yahoo!? Send FREE video emails in Yahoo! Mail! http://promo.yahoo.com/videomail/ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/