Abstract: Machine-readable media, methods, and apparatus that generate chip selects words are disclosed. In one embodiment, an address decoder may generate an encoded chip select word to select a memory device when in an encoded chip select mode. The address decoder may also generate an unencoded chip select word to select a memory device when in an unencoded chip select mode. In one embodiment, the address decoder, in response to an address for a boot code nub, may generate a chip select word that selects the same memory device regardless of whether the address decoder is operating in an encoded or unencoded chip select mode.