在ISE的例程中看到了下列对Mealy Moore状态机的表述。
the general recommendation for the 
-- choice of state-machine depends on the target architecture and specifics of 
-- the state-machine size and behavior however typically, Moore style 
-- state-machines implement better for FPGAs and Mealy implement best for 
-- CPLDs.
-- Mealy vs. Moore Styles
--
--  There are two well known implementation styles for state-machines, Mealy 
-- and Moore.  The main difference between Mealy and Moore styles is the Mealy 
-- state-machine determines the output values based on both the current state 
-- state as well as the inputs to the state-machine where Moore determines its 
-- outputs solely on the state.  In general, Moore type of state-machines 
-- implement best in FPGAs due to the fact that most often one-hot 
-- state-machines are the chosen encoding method and there is little or no 
-- decode and thus logic necessary for output values.  If a binary encoding is 
-- used, it is possible that a more compact and sometimes faster state-machine 
-- can be built using the Mealy method however this is not always true and not 
-- easy to determine without knowing more specifics of the state-machine.
原文:http://www.cnblogs.com/liyusnoopy/p/4873542.html