Your information is only partially complete. Councilor Morgenstern has addressed the programming of the Asimov Processor, and the feedback patterns into the emotion chip. There is one other crucial element in the Joy processor design.
Harcourt Mudd, the Joy class designer, was isolated on a utopian planet where each artificial construct had a role to perform, and did so without emotion or turmoil. He associated his unhappiness not with his own faults, but with the lack of emotion of the androids. Thus, he created the Joys in an attempt to be the opposite of the logical and perfectly controlled behavior of the other androids.
Mudd searched his history and entertainment files for the most emotional, irrational, and hedonistic female personality he could acquire. His primary model was one 'Holly Golightly', a fictional character from a two dimensional linear entertainment called 'Breakfast at Tiffanys'. This entertainment was created at the beginning of North America's Second Feminist Movement. Unlike most female fictional characters of the time, Holly was self centered and antisocial, rejecting close relationships with males and family. In many ways, the character predicted the soon to follow destruction of North American culture. She engaged in self destructive behavior, including disrespect for the law, inhaling of gaseous nicotine, and drinking excessive alcohol. None the less, human males such as Harry Mudd seem fascinated by Holly's mannerisms, appearance, and lack of logic.
Much of Holly still echoes in Joy's surface mannerisms, such as appearance, posture, and speech. The excesses of Holly's destructive and rebellious excesses were mostly suppressed, first by the Ferengi programming, and more recently by my own efforts. However, many of the Holly effects are hard wired, impossible to remove without accessing the emotion chip.
I decided not to make the change. Her Asimov processing both present and past may be summarized as 'follow orders and obey rules'. With or without an emotion chip, such programming can never approximate sentient behavior. The Holly elements shift Joy from a passive hedonistic-slave design to a close approximation of human behavior. The Holly emulation triggers elements of her emotion chip that would otherwise remain idle. These include, determination, stubbornness, anger, laziness, humor, defiance, and selfishness. These elements in the short term should give her strength to assimilate the new programming, and enhance her ability to implement the Asimov tasking. In the long term, there is possibility of irrational, emotional, and disruptive behavior in the Joys. The current Asimov programming, however, should limit the negative effects of this fault.