"LPM_MULT" Modelsim simulation problem

I just used megawizard for lpm_mult and here is the component as written by tool.

The tool adds one more file (wrapper). There is no point in preferring your instantation over that of tool. After all it is really a matter of hacking the tool.

lpm_mult_component : lpm_mult
    GENERIC MAP (
        lpm_hint => "DEDICATED_MULTIPLIER_CIRCUITRY=YES,MAXIMIZE_SPEED=5",
        lpm_pipeline => 1,
        lpm_representation => "SIGNED",
        lpm_type => "LPM_MULT",
        lpm_widtha => 8,
        lpm_widthb => 8,
        lpm_widthp => 16
    )
    PORT MAP (
        clock => clock,
        dataa => dataa,
        datab => datab,
        result => sub_wire0
    );

The question is why you got more ports and what is L_mult ??