ENTITY ram_prech_buf1 IS
PORT (
  nck  	   : in  BIT;
  nckx 	   : out BIT;
  vdd  	   : in  BIT;
  vss	   : in  BIT
);
END ram_prech_buf1;

ARCHITECTURE VBE OF ram_prech_buf1 IS

BEGIN
  ASSERT (vdd and not (vss))
  REPORT "power supply is missing on ram_prech_buf1"
  SEVERITY WARNING;

  nckx <= nck;

END;