I'm also having this problem. It also shows up when you list functions: (sdcdb) info functions All defined functions: File utils .c Delay2400(); short_delay(); _nop_(); File display .c enable_digits(); select_digit_addr(); show_digit(); display_number(); File keypad .c keypressed_numval(); keypressed_details(); keypad_enable(); detect_keypress(); File calc .c sendChar(); sendCRLF(); sendStr(); dump_register(); disable_comparators(); main(); _main(); (sdcdb)