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It will outlive us all (lemmy.world)
submitted 2 years ago by to c/memes@sopuli.xyz
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[–] 42 points 2 years ago (7 children)

Yeah but try pressing more than 4 keys at once on the PS2 keyboard and get back to me

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  • [–] 37 points 2 years ago* (last edited 2 years ago) (3 children)

    That is a limitation of the keyboard not PS/2. Unlike USB which is limited to 10 simultaneous key presses, PS/2 supports full n-key rollover.

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  • [–] 3 points 2 years ago (2 children)

    This, it’s why I still use the PS2 interface. Full n-key rollover is impossible for me to do without.

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  • [–] 18 points 2 years ago (1 child)

    USB does not have that limitation.

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  • [–] 10 points 2 years ago (3 children)

    Ah, had to dig into it. There was a long period of time during which you couldn’t find a USB NKRO keyboard. Seems that has been fixed.

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  • [–] 7 points 2 years ago (3 children)

    Out of curiosity, what is the practical use of full N-key rollover? I can't think of many things that require me to press more than maybe five keys at a time.

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  • [–] 5 points 2 years ago

    Used to have these problems when we were children and playing fighting games with my brother with one keyboard or guitar hero clones that need you to press multiple buttons at the same time, that's the only use case I could think of. I don't know if there's any modern software that requires you to mash more than 2 or 3 buttons at the same time

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  • [–] 2 points 2 years ago

    Bit of a niche use-case, but I'd like to have it for using my laptop keyboard as a piano keyboard, for basically MIDI input (via VMPK or one of the DAWs with this feature built-in).

    There's even certain combinations of just 4 keys, which I simply cannot play...

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  • [–] 26 points 2 years ago (2 children)

    Dude just switch to vim already

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  • [–] 13 points 2 years ago

    Nothing to do with the interface. If your keyboard can only do 4 it means that the manufacturer has cheaped out on diodes and couldn't even be bothered to stagger the matrix enough to make you not notice.

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  • [–] 11 points 2 years ago (1 child)

    I think you're confusing USB and PS/2. USB has (or used to have?) a limit on the number of keys you could press, whereas PS/2 supports n-key rollover.

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  • [–] 2 points 2 years ago (1 child)

    USB supports NKRO as well as the default 6KRO.

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  • [–] 1 point 2 years ago (1 child)

    Historically it didn't support it though, whereas PS/2 always did.

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  • [–] 2 points 2 years ago (1 child)

    Historically computers only supported punch cards, it feels weird to only focus on past capabilities. https://www.devever.net/~hl/usbnkro

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  • [–] 1 point 2 years ago (1 child)

    I mean... the post is about PS/2, which is a past capability too.

    The site you linked to just shows a blank page for me in Firefox. Works in Chrome though.

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  • [–] 2 points 2 years ago* (2 children)

    Ok, but why would you ever? Genuinely curios.

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