First post, by quicknick
Earlier this month I received 5 pieces of AT27C512R (from a seller in Europe) for experimenting with an alternative Imagine128-II bios (more details here).
To my surprise, all of them were already programmed with some sort of code. I explained this to the seller, and he agreed to send me another 5 pieces if I provide a photo proof that I destroyed the chips.
Few days ago the second batch arrived, but I was away so I could test them only today. Despite being a somewhat different specification (AT27C512R-12JI instead of -12JC) and being properly sealed in their tape/reel packaging, they are all programmed with the same data, identical to the first batch!
Was that even a thing, chips coming from the manufacturer already programmed?
Here's a dump, if anyone is curious and could maybe identify the equipment for which these were made:
(the only plain text inside is "20030Utility Meter" at around 4EAA)