c_lflag 262 src/simh/linehistory.c raw.c_lflag &= ~( ECHO | ICANON | IEXTEN | ISIG ); c_lflag 2200 src/simh/sim_console.c runtty.c_lflag = runtty.c_lflag & ~(ECHO | ICANON); /* no echo or edit */