Design Configuration

Hi,

I have created three buffers components (bufferA, bufferB, bufferC)of
varying lengths and instantiate bufferA inside MyEntity. Now, I want
to create another instance of MyEntity but use bufferB instead of
bufferA.

Is there a way that I can use some configuration script in the VHDL
file to let it know which buffer to instantiate? (FYI - I am using
ModelSim 5.7f for simulation and QuartusII for synthesis and P&R and
would like the configuration to be compatible with both these).

I know the easiest way is just to create three separate entities but
I'm trying to learn more here

Thanks,
Divyang M

Divyang M

Divyang M wrote:


> I have created three buffers components (bufferA, bufferB, bufferC)of
> varying lengths and instantiate bufferA inside MyEntity. Now, I want
> to create another instance of MyEntity but use bufferB instead of
> bufferA.
>
> Is there a way that I can use some configuration script in the VHDL
> file to let it know which buffer to instantiate?

What about a generic parameter and using the if-generate statement?

If bufferA and bufferB have the same entity, you may also use one entity
and two architectures, while a VHDL configuration specifies which one
has to be chosen.

Ralf

Ralf Hildebrandt

Hi Ralf,

Using if-generate statements with generics did the job.

Thanks,
Divyang

Divyang M