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Thanks and you're correct, I modified my post. Minor brain cramp this afternoon:grin:

Correct, EPROM stands for Erasable Programmable Read Only Memory and they are programmed using voltages and UV light to erase them in a specifically built programming jig/machine/box with a specific program by the manufacturer. The stickers are put over the window in the chip to prevent...

Usually, chips(integrated circuits) that have a label bearing the word "REV"XXXX is a chip that has been programmed with data from the factory or flashed with new data post manufacture. Unless one knows what the chip does via a schematic, and what data is programmed into it, it is unlikely to be...