from the other post that you asked the same question on
to hold the chip that contains the run program and the maps.
the std one in a l8 basically increases the memory level from a l6 and is unencrypted.
other baby boards may have an extra chip on them to decypher the encrypted chip (e.g. pectel). that means that if you copy the chip, you also need the babyboard to make it work, you can't just plug it into a std babyboard