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mcmaster:commodore:ghu-01a [2013/07/31 06:00] mcmaster [Package] |
mcmaster:commodore:ghu-01a [2021/05/28 02:34] |
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- | From " | ||
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- | """ | ||
- | The two GHU chips are made of a (high silicate?) epoxy I've never seen before. | ||
- | The silicate content makes chemically decapping them extremely difficult. | ||
- | Although I can get acid to penetrate a few mm to remove the epoxy it leaves | ||
- | a strong skeleton behind that so far I've only been able to remove mechanically. | ||
- | So this is where they stand: | ||
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- | GHU-01A: was dipped in hot acid for a few hours (contrast to minutes for the | ||
- | other chips) to take out a lot of the epoxy. | ||
- | processing on it, looks like this if you are curious (picture below) | ||
- | able to mechanically lap it to expose the chip surface but this will be somewhat | ||
- | labor intensive (same with above if I got another copy)... | ||
- | """ | ||
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- | ====== Package ====== | ||
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- | {{gallery>: | ||
- | {{gallery>: | ||
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- | After soaking in acid for a few hours... | ||
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- | {{gallery>: | ||
- | {{gallery>: | ||
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- | ====== Die ====== | ||
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- | Not exposed | ||
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- | ====== References ====== | ||
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- | http:// | ||
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