ENTITY rom_dec_line23_64 IS PORT ( nck2 : in BIT; nck3 : in BIT; sel2 : in BIT; sel3 : in BIT; line2 : out BIT; line3 : out BIT; vdd : in BIT; vss : in BIT ); END rom_dec_line23_64; ARCHITECTURE VBE OF rom_dec_line23_64 IS BEGIN ASSERT (vdd and not (vss)) REPORT "power supply is missing on rom_dec_line23_64" SEVERITY WARNING; line2 <= nck2 and sel2; line3 <= nck3 and sel3; END;