1. A programmable logic device for producing a plurality of first signals, each of which is a programmable logic function of a plurality of second signals, the programmable logic device comprising: a plurality of logic array blocks, each of which has a plurality of inputs and at least one output with each output carrying a respective one of the plurality of first signals; a plurality of global conductors, each global conductor being fed by a respective one of the plurality of second signals; a plurality of first multiplexers, each of which has a plurality of inputs with each input being connected to a respective one of the global conductors, and an output; and a plurality of second multiplexers, each of which has a plurality of inputs with each input being connected to the output of a uniquely respective one of the first multiplexers, and an output connected to the input of a respective one of the logic array blocks, wherein each of the global conductors has two unique paths through two different first multiplexers to a single logic array block and each global conductor also has two unique paths from each one of the first multiplexers through two different second multiplexers to two different logic array blocks.