Component Instance "XX" is not bound - Modelsim

Altera_Forum · ‎07-12-2012

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 · ‎07-12-2012

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Hi

...

Warning: (vsim-3473) Component instance "adder1: altfp_add_sub" is not bound.

...

Thanks

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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 · ‎07-13-2012

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.