Making some basic type testing.
rbb: 00 00 00 00 00 00 00 00 
rbb: 00 00 00 00 00 00 00 01 
rbb: 00 00 00 00 00 00 00 03 
rbb: 00 00 00 00 00 00 00 31 
rbb: 10 00 00 00 00 00 00 01 
show_rbb: IIIIIIIIIIIIIIIIIIIIIIIIIIIIIRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR