The distinctive thing about the Commodore 64 was its custom chips. And while the VIC-II chip provided competitive graphics, the 64’s secret weapon was the sound interface device, also known as the SID. The Mastermind behind the SID was a young chip designer named Robert Yannes, who went on to found the synthesizer company Ensoniq. But the chips frequently fail today and the problem is getting worse. Here’s why 6581 SID chips can go bad just sitting on a shelf.
Why SID chips go bad sitting on a shelf










