> OK, perhaps this just dawned on me. Call me a DUMBASS if I'm wrong. Lemme > think about this: Since in two bytes(16 bits) the max number is 65535, that > would NOT be enough to map out the expander2, but 32 bits WOULD! Is that what > 32 bit addressing is? Or am I a dumbass? :p Actually, both are true. J/K ;-) Yes, that's 32 bit addressing, which reaches ~4,295,000,000.