Hi i am writing a device driver for a pci card and i have no problem dealing with the 8/16/32 bit registers but there are a number of 64 bit registers how can i go about reading from these i have seen rumors about a readq / writeq but i cannot seem to find them in the kernel thanks James -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/