t2_1.tdf

各种VHDL的开发资料

SUBDESIGN t2_1
(
  d0,d1,d2,d3:INPUT;
  out: OUTPUT;
)
BEGIN
  IF( (d3,d2,d1,d0) >= 5 ) THEN
    out=VCC;
  ELSE
    out=GND;
  END IF;
END;