So a few months ago I was looking on eBay for cheap wafers for decoration for my room, and there was one seller which had some wafers marked with "1145X".
By looking at the pictures, the chip looked awfully familiar to the MOS 6502, specially the huge PLA, but not quite the same. So a friend and I bought three of these wafers.
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And well, a few hours of Google yielded this:
http://siliconpr0n.org/map/rockwell/r65c02p2/mz_ns50xu/. It turns out we have some old unsliced R65C02s from the 90s.
Except we may not. According to
an ad on eBay which is selling vintage R65C02P2 wafers, those CPUs are marked as "11450" (look at the bottom of the wafer), and not "1145X". Also, unlike those for sale, mine have no red dots, which means it wasn't tested or was a 100% yield (which I seriously doubt).
Could these be prototypes? Did Rockwell manufacture mixed batches with 11450 (R65C02) and other 1145x devices such as the R65C102 (11451)...?