DADOS divides the simulation box into smaller boxes. In each direction, x, y or z, it takes a power of two divisions in order to assign an optimum number of bits. The smaller BitsBoxes is, the bigger the boxes will be, because if less bits are used, less divisions will be carried out. Information about box size can be found in the messages window at the beginning of a simulation:
The maximum number of boxes created in each simulation are 2BitsBoxes.
DADOS follows an algorithm to distribute the bits among the directions, in order to get nearly-cubic boxes, but:
If the simulation box is very small, DADOS doesn't use all the bits, because there is a minimum limit for box sizes of about 1nm3 per box.
Even for a very big simulation box, it is NOT recommended using a value of BitsBoxes higher than 19, because a large amount of computer memory and time would be used.
It is not recommended to use a BitsBoxes value much lower than 19 because if the simulation box is very large, the boxes would be large, loosing spacial resolution. This low spacial resolution would affect to the charge mechanisms, to the amorphization mechanisms and to the interface shape.