Hi Ingo, maybe function tty_char_out() is the right place for your hook: src/base/bios/int10.c void tty_char_out(unsigned char ch, int s, int attr) Manfred -- To unsubscribe from this list: send the line "unsubscribe linux-msdos" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html