Nix McRetro
Does the first chip look like an AMD AM29F032B? The top marking said it was, but the GQ-4X4 reported manufacturer / device identification consistent with an ST M29F032D, as the first screenshot shows. That is strong evidence that the device had been remarked, although I did not decap the chip or inspect the silicon to prove exactly what die was underneath.
The second screenshot shows my known-good AMD example. Both devices worked in my SNES flash-cart project using the TSOP-to-Willem adapter, so the useful conclusion is that the device I received did not identify electronically as the AMD part printed on top, but was functionally useful in this project. I still don’t know why somebody decided ST Micro needed an AMD costume. ST isn’t that bad!