Combinatorial minimization

In VHDL either a 'select' or a 'case' statement delivers a result in 4 LE and 5.158 ns in a Cyclone II EP2C5T144C6.

	with A select 
		Y <= 	"1000000" when "000001" ,
			"1111001" when "000010" ,
			"0100100" when "000100" ,
			"0110000" when "001000" ,
			"0011001" when "010000" ,
			"0010010" when "100000" ,
			"XXXXXXX" when others ;
	process( A ) 
		begin
			case A is
				when "000001"  => Y <= 	"1000000" ;
				when "000010"  => Y <= 	"1111001" ;
				when "000100"  => Y <= 	"0100100" ;
				when "001000"  => Y <= 	"0110000" ;
				when "010000"  => Y <= 	"0011001" ;
				when "100000"  => Y <= 	"0010010" ;
				when others    => Y <= 	"XXXXXXX" ;
			end case ;
		end process ;