Any way to read an Eprom missing the identifying markings?

Im looking to dump a prototype, but the eprom that has the Fix Program on it is missing the manufacturer and Part number markings. The Eprom doesn’t look similar to the other Eproms on the board, so I wouldn’t know how to guess how to dump it with my limited knowledge.

Any help appreciated, thanks.

 

Some programmers have an auto id function, like mine. Cheap ones not so much.
Otherwise, need to know number of pins and check where ground and vcc are and start to figure it out from there.

 

On my cheap “universal” programmer it has this function but gives a warning it might erase some chipa

 

It would be much easier if you made a picture of the prototype. And maybe even provide a pinout by checking with a multimeter to where the eprom pins lead on the cart edge connector, assuming it's a game cartridge.

 

The pinout of the cart connector, whatever it is, you didn't say, is known so you can trace that back to the EPROM. There aren't a lot of different pinouts for EPROMs with whatever package the one in question is so you can narrow it down, probably identify the pinout, from that. Odd that it looks different than the others on the board but again, you don't say how.