Component Instance "XX" is not bound - Modelsim

[Altera_Forum]

Hi 

I´m trying to simulate a design in modelsim altera starter edition 6.6d. All the files (vhd) compile but when I start the simulation a warning message is displayed:  Warning: (vsim-3473) Component instance "adder1: altfp_add_sub" is not bound.  I can run the simulation but the output of this adder is always "XXXX". It also happen with a FP divider but not with a FP multiplier, it has not problem.  This is how I'm creating the instance of the altfp_add_sub component:  LIBRARY altera_mf; USE altera_mf.altera_mf_components.all;  . . .  adder1 : altfp_add_sub  GENERIC MAP(  [/INDENT]denormal_support => "YES",  [/INDENT]intended_device_family => "Stratix III",  [/INDENT]direction => "VARIABLE",  [/INDENT]exception_handling => "YES",  [/INDENT]optimize => "SPEED",  [/INDENT]pipeline => 8,  [/INDENT]reduced_functionality => "NO",  [/INDENT]rounding => "TO_NEAREST",  [/INDENT]speed_optimized => "STRATIX_ONLY",  [/INDENT]width_exp => 8,  [/INDENT]width_man => 23,  [/INDENT]lpm_hint => "UNUSED",  [/INDENT]lpm_type => "altfp_add_sub")     PORT MAP(  [/INDENT]aclr => clr,  [/INDENT]add_sub => add_sub_reg,  [/INDENT]clk_en => en,  [/INDENT]clock => clock,  [/INDENT]dataa => output_mux1_reg,  [/INDENT]datab => output_mux2_reg,  [/INDENT]result => output_adder);    Please, can someone tell me what is wrong? Thanks

[Altera_Forum]

--- Quote Start ---  Hi ... Warning: (vsim-3473) Component instance "adder1: altfp_add_sub" is not bound. ... Thanks  --- Quote End ---    This commonly happens if your instance interface doesn't match to your component interface declaration. Check if the port and generic interface of your component and the respective instance are equal.

[Altera_Forum]

I have reviewed the mf_altera package/library from my version of modelsim and it seems that the components altfp_add_sub and altfp_div are not included, only the altfp_mult is in this package. 

 I have worked previously with these components but creating them from Quartus using the Megafunction Wizard which creates the files needed for Modelsim to simulate the components. Now I see that apparently some components can not be instantiated using the component declaration directly.