ENTITY dp_nmux_x1 IS
PORT (
  sel0	: in  BIT;
  sel1	: in  BIT;
  i0	: in  BIT;
  i1	: in  BIT;
  nq	: out BIT;
  vdd	: in  BIT;
  vss	: in  BIT
);
END dp_nmux_x1;

ARCHITECTURE vbe OF dp_nmux_x1 IS

BEGIN
  ASSERT (vdd and not vss) 
  REPORT "power supply is missing on dp_nmux_x1"
  SEVERITY WARNING;

  ASSERT (sel0 xor sel1) 
  REPORT "wrong control signals on dp_nmux_x1"
  SEVERITY WARNING;

  nq <= not ((sel0 and i0) or (sel1 and i1));

END;