Decoded generic routing pool

A method and system are provided which allows N programmable cells to be used to select one of 2.sup.N signals for routing to a desired destination, such as a programmable array logic (PAL), for further processing. N input selection signals are used to generate N selection signals and their corresponding complements using N programmable cells. These selection signals are then used to generate coded selection signals, which can be separated into groups of one or more. Each group of coded selection signals is then decoded, such as with K.times.1 tree decoders, where K is not greater than 2.sup.N. Tree decoders are typically cascaded such that the first stage or group of decoders select a portion of the 2.sup.N signals and then subsequent decoder(s) select portion(s) of the previous selected signals until the one desired signal is selected from the 2.sup.N signals. A different set of N input selection signals can be used to select a signal from the same 2.sup.N signals in order to select more than one of the 2.sup.N signals.