ENTITY rf2_dec_bufad0 IS PORT ( i : in BIT; nq : inout BIT; q : out BIT; vdd : in BIT; vss : in BIT ); END rf2_dec_bufad0; ARCHITECTURE VBE OF rf2_dec_bufad0 IS BEGIN ASSERT (vdd and not (vss)) REPORT "power supply is missing on rf2_dec_bufad0" SEVERITY WARNING; nq <= not i; q <= not nq; END;