I wonder if there isn't some way to manufacture ECC RAM that doesn't need CPU support? It could act towards the CPU/motherboard as if it's non-ECC RAM but still

I wonder if there isn't some way to manufacture ECC RAM that doesn't need CPU support? It could act towards the CPU/motherboard as if it's non-ECC RAM but still contain 9 bits per byte inside. The RAM chip itself would do any computation if needed instead of the CPU, and if it needs to give interrupts to warn about error conditions, it could output it as an electric signal you can hook up to anything you want yourself (including to the CPU in some way, like via USB or something lower level, or otherwise a warning light or beep or so)