nux.vhd

初学ＶＨＤＬ有用的

ENTITY nux IS
		PORT(
		d0,d1,sel: IN	BIT;
		q: OUT	BIT);
END NUX;
ARCHITECTURE connect OF nux IS
	SIGNAL tmp1,tmp2,tmp3: BIT;
	BEGIN
	cale:
     BLOCK
       BEGIN
        tmp1<=d0 AND sel;
        tmp2<=d1 AND (NOT sel);
        tmp3<=tmp1 OR TMP2;
        q<=tmp3;
       END BLOCK cale;
  END connect;