Turing spoke of population dynamics. I would start with a cellular structure with 12 connections. Move on to development of awareness, Self, Other and Environment using multi-sensory inputs and a sematosensory cortex. You will need to dynamically encode, store, sort and delete memory. Your internal clock will be points, not intervals as explained by Oliver Sacks in the river of consciousness. Your synthetic must have time to incubate in a safe environment. Sacks was wrong about salience, it is dynamically selected. But emotion in evolution is generated by the dance of the sympathic and parasympathic nervous systems, not the CNS. Hope this helps.