timing questions -false path for the experts

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You have false_path'ed config reg, so the fitter is free to place them wherever it likes, and any timing will ignore config_reg. Are you sure you want to do this? it could be violating timing and increase the chance of a metastable event when it changes.

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We can assume config_reg will not change...

when i do write to it, i am making sure i hold values long enough,

i also read back to validate.