ENTITY ram_mem_dec3 IS PORT ( i0 : in BIT; i1 : in BIT; i2 : in BIT; ndeca : out BIT; ndecb : out BIT; vdd : in BIT; vss : in BIT ); END ram_mem_dec3; ARCHITECTURE VBE OF ram_mem_dec3 IS BEGIN ASSERT (vdd and not (vss)) REPORT "power supply is missing on ram_mem_dec3" SEVERITY WARNING; END;