Core function backup system

A hidden core allows a droid to retain all of its programming, skill improvements, and personality after a memory wipe. 1D days after the memory wipe, the droid can try to make a Difficult droid programming/repair roll in order to restore its backup. If the roll fails, the droid may attempt it again every 1D days. In order to discover a hidden core, a character must be actively searching for something suspicious in the droid and succeed in a droid programming/repair roll against the droid's willpower, or against a Heroic difficulty if the droid has spent an extra 200 credits for the deluxe installation.