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Reverse-engineering a tiny 1980s chip that plays Christmas tunes

For the holidays, I decapped a chip that plays three Christmas melodies. The UM66T melody chip from the 1980s was designed for application...
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Hardware & ElectronicsHistory & Retro Computing2021

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Dec 25, 2021Reverse-engineering a tiny 1980s chip that plays Christmas tunes by picture31064

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