A microelectronic assembly or system includes at least one microelectronic package having a microelectronic element mounted face up above a first surface of a substrate, one or more columns of contacts extending in a first direction along the microelectronic element front face. Multiple informational categories associated with the selected first data item are accessed based on the received user input selecting the first data item. The outcome of the conditional branch is predicted based on the first and second prediction information. In a controller-based system the identification is performed by a controller in the reproducing apparatus.