erro

Sir,

Here is the defination of component 'Arbiter'.

COMPONENT Arbiter

PORT(Req, North, West, Mask: IN std_logic;

South, East, Grant: OUT std_logic);

END COMPONENT;

The instant of above arbiter is called as follows.

Arbiter_1_1: Arbiter

PORT MAP (Req => arb_req(1), North => High, West => High, Mask => c_bar_P(7),

South => south_2_north(1)(1), East => east_2_west(1)(1) , Grant => arb_grant(1)(1));

and the error is

Error: Node instance "Arbiter_1_1" instantiates undefined entity "Arbiter"