Min ST penalties

[pzmcgwire]

Legacy ITL says that if you lack the ST required for a weapon (excepting crossbows):

If your ST is less than that required for the weapon you are using, your DX is -1 for each ST point you lack, and the damage done is -1 for each 2 ST (round damage down) that you lack.

So how does the round down work? If you are 1 ST less, is damage at -1?

If 3 ST less, is damage at -2 or -1?

Now for Crossbows, damage is not changed, but the -1 DX penalty for every ST point lacking remains.