ENTITY na2_x1 IS GENERIC ( CONSTANT area : NATURAL := 1000; CONSTANT cin_i0 : NATURAL := 11; CONSTANT cin_i1 : NATURAL := 11; CONSTANT rdown_i0_nq : NATURAL := 2850; CONSTANT rdown_i1_nq : NATURAL := 2850; CONSTANT rup_i0_nq : NATURAL := 3720; CONSTANT rup_i1_nq : NATURAL := 3720; CONSTANT tphl_i0_nq : NATURAL := 59; CONSTANT tphl_i1_nq : NATURAL := 111; CONSTANT tplh_i1_nq : NATURAL := 234; CONSTANT tplh_i0_nq : NATURAL := 288; CONSTANT transistors : NATURAL := 4 ); PORT ( i0 : in BIT; i1 : in BIT; nq : out BIT; vdd : in BIT; vss : in BIT ); END na2_x1; ARCHITECTURE behaviour_data_flow OF na2_x1 IS BEGIN ASSERT ((vdd and not (vss)) = '1') REPORT "power supply is missing on na2_x1" SEVERITY WARNING; nq <= not ((i0 and i1)) after 900 ps; END;