Hi, I need to change the adress of the serial port. Standard its 0x3F8. I searched the linux source code for this address and only found /include/asm-i386/serial.h which contains #define STD_SERIAL_PORT_DEFNS \ /* UART CLK PORT IRQ FLAGS */ \ { 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS }, /* ttyS0 */ \ { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS }, /* ttyS1 */ \ { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS }, /* ttyS2 */ \ { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */ i changed it to the new address but i doesn't seem to work.. :( this time i searched the source codes for STD_SERIAL_PORT_DEFNS but it looks like it is never used? someone has any experience with this? greetz, Luuk -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/