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Forcing a signal to check crc

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Hi all

I'm trying create a simple mechanism for checking the functionality of a DUT with CRC, that maybe can also be used to other scenarios that require forcing a signal.

What do you think is the best approach in order to create a reusable environment? I'm thinking of 2 ways to achieve this:

1) using the "uvm_hdl_force" function - forcing the signal through VPI. The benefits are it is very simple, and and it can be reusable if you use the config_db to pass the sting type hdl path.

2) using a virtual interface - This approach requires more code, but you can have better performances in runtimes (vpi requires special compilation flags)

Do you have other suggestions? Which do you think is better?

Thanks a lot!


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