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Vintage
(lemmy.world)
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this post was submitted on 12 Aug 2025
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Please explain? I get that the chubby bird is speaking assembly, but I'm sure there's more to it than that?
PS2 keyboards use interrupts rather than polling in USB, meaning every time a key is pressed the CPU stops what its doing to process it.
I'm wondering, is it still the case for mobos with Super IO?
Super IO does still use interrupts as far as I know. The PS/2 protocol is interrupt-driven, so it's not possible to use a PS/2 keyboard or mouse without interrupts.
Cool! I had no idea it was deeper than just a physical interface change.
And having to pick your IRQ when installing anything into your machine, and the weird bugs that could happen if you mucked it up.
I remember manually programming the cylinders and heads on a hdd into the bios. Kids these days got it easy
I had a little book with the settings for almost every brand and model of hard drive that existed when published.
And when the bits feel off the end and you had to wind them back on with a pencil.
Keyboard slows down the CPU because it gets priority over whatever the CPU is working on so the keyboard could cause your system to lag.
Back then all we had was single core CPUs.