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It was more than half (depending on age). I thought it always took you to 4.77 MHz to match the original 5150.

I didn't know, thanks, you've sent me down a small rabbit hole reading up on this!

Sure. I never understood it as a kid. The fact it slowed your computer always confused me since I didn’t realize it was on by default.

I didn’t learn the real purpose until long after they were gone.