CircRegadd4b
entity CircRegadd4b isPort ( A, B : in STD_LOGIC_VECTOR (3 downto 0);C, CLK : in STD_LOGIC;R : out STD_LOGIC_VECTOR (4 downto 0));end CircRegadd4b;architecture MyCircRegadd4b of CircRegadd4b iscomponent RCPort ( A, B : in STD_LOGIC_VECTOR (4 downto 0);Cin : in STD_LOGIC;S : out STD_LOGIC_VECTOR (4 downto 0));end component;Signal XA, XB, XR : STD_LOGIC_VECTOR (4 downto 0);beginXA