Hello! I wrote I can't use DMA on user mode but what exactly it means? I can (as root) do ins and outs so, theoretcly, I can program the DMA or not? Best regards Adilson. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/