... | ... | @@ -47,14 +47,10 @@ By looking at the ejector pin and pin 1 markings, this chip can be identified as |
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By looking at the notch and ejector pin markings, this chip can be identified as package style C. The chip has obviously been remarked, based on the incorrect Yamaha logo, the matte finish inside the ejector pin markings, and the nonsense date code (these chips weren't being made in 2017). The chip works when tested. **Real, but remarked.** (The purple nail polish is my own indicator that I've tested the chip.)
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### Example 3
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![remarked2](uploads/1081b64c3c2cb5e9af6c77c889345985/remarked2.png)
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Pin 1 marking and single ejector pin marking are present on this chip, identifying it as package style B. Remarking is evident based on the matte surface inside the pin 1 mark, and the incorrect logo and typeface, despite the reasonable date code. The chip works when tested. **Real, but remarked.**
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### Example 4
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![realBcentered](uploads/aad976ebc7bae89b4558a2a0a8f5cfd3/realBcentered.png)
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Pin 1 marking and single ejector pin marking are present on this chip, identifying it as package style B. Surface inside pin 1 mark is shiny. The logo and text look good. It uses the centered text style, which is uncommon, but still legitimate. **Real.**
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### Example 5
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### Example 4
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![fake2](uploads/dcd9ca784987dbfa4b8e034fafd7a693/fake2.png)
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The logo and text are completely wrong, and the date code is nonsense, which is evidence of remarking. The chip has two ejector pin markings and a notch, but does not match any known Yamaha YM2612 package styles. The key point to notice here is that the notch is shallow, and does not go all the way through the chip. It's not even worth testing these chips in-circuit. **Fake.** Aidan Lawrence has identified many of these fake chips as [actually being 6116 SRAMs](https://www.aidanlawrence.com/the-fake-ym2612-mystery-game).
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... | ... | @@ -68,6 +64,5 @@ Testing fake chips in-circuit is not recommended. The incorrect package style is |
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* Text on the chip - Aidan Lawrence & kunoichi labs
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* Example 1 - kunoichi labs
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* Example 2 - kunoichi labs
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* Example 3 - Thea Flowers
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* Example 4 - Aidan Lawrence
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* Example 5 - Stefan Nordkvist |
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* Example 3 - Aidan Lawrence
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* Example 4 - Stefan Nordkvist |
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