Comment on It will outlive us all

dashydash@lemmy.world ⁨2⁩ ⁨years⁩ ago

• Toes@ani.social ⁨2⁩ ⁨years⁩ ago

  A bunch of those points about ps2 are no longer accurate, it’s emulated on modern computers.

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  • Wizard_Pope@lemmy.world ⁨2⁩ ⁨years⁩ ago

    Don’t tell me they nerfed ps2

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    • dashydash@lemmy.world ⁨2⁩ ⁨years⁩ ago

      Sad day to have eyes

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      • Wizard_Pope@lemmy.world ⁨2⁩ ⁨years⁩ ago

        Sad days tp ahve a PS2 keyboard ot mouse

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• Xenny@lemmy.world ⁨2⁩ ⁨years⁩ ago

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

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  • e8d79@discuss.tchncs.de ⁨2⁩ ⁨years⁩ ago

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

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    • frezik@midwest.social ⁨2⁩ ⁨years⁩ ago

      USB is not limited to 10, or 6 as is sometimes stated.

      www.devever.net/~hl/usbnkro

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      • e8d79@discuss.tchncs.de ⁨2⁩ ⁨years⁩ ago

        Interesting I did not know that.

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    • blarth@thelemmy.club ⁨2⁩ ⁨years⁩ ago

      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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      • frezik@midwest.social ⁨2⁩ ⁨years⁩ ago

        USB does not have that limitation.

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      • Theharpyeagle@lemmy.world ⁨2⁩ ⁨years⁩ ago

        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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    • Xenny@lemmy.world ⁨2⁩ ⁨years⁩ ago

      Well I never had a fancy gaming keyboard back in the PS2 days lol

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      • e8d79@discuss.tchncs.de ⁨2⁩ ⁨years⁩ ago

        How about a fancy IBM keyboard? The Model F from 1981 features n-key rollover. Don’t ask me why they needed it at the time though. It probably wasn’t important as the Model M from a couple of years later dropped that feature.

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  • intensely_human@lemm.ee ⁨2⁩ ⁨years⁩ ago

    Dude just switch to vim already

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    • dashydash@lemmy.world ⁨2⁩ ⁨years⁩ ago

      Dude, just switch to Webstorm already

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    • lud@lemm.ee ⁨2⁩ ⁨years⁩ ago

      Is CS available in vim yet?

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      • embed_me@programming.dev ⁨2⁩ ⁨years⁩ ago

        Idk but Doom runs pretty well

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  • dan@upvote.au ⁨2⁩ ⁨years⁩ ago

    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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    • JackbyDev@programming.dev ⁨2⁩ ⁨years⁩ ago

      USB supports NKRO as well as the default 6KRO.

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      • dan@upvote.au ⁨2⁩ ⁨years⁩ ago

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

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  • drathvedro@lemm.ee ⁨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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  • AnUnusualRelic@lemmy.world ⁨2⁩ ⁨years⁩ ago

    Preposterous, I’ve used emacs on a ps2 keyboard without issues.

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  • morbidcactus@lemmy.ca ⁨2⁩ ⁨years⁩ ago

    I recall NKRO was the selling point on some of those keyboards, my old steel series mechanical will absolutely let you mash all the keys with a ps2 adapter.

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  • Anarki_@lemmy.blahaj.zone ⁨2⁩ ⁨years⁩ ago

    Ok, but why would you ever?

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    • SkyeStarfall@lemmy.blahaj.zone ⁨2⁩ ⁨years⁩ ago

      Video games

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      • Anarki_@lemmy.blahaj.zone ⁨2⁩ ⁨years⁩ ago

        Never had issues with it, but fair. Different strokes.

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    • Xenny@lemmy.world ⁨2⁩ ⁨years⁩ ago

      Try playing a rhythm game on a PS2 keyboard 😟

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• trainden@lemmy.blahaj.zone ⁨2⁩ ⁨years⁩ ago

  USB: Many designs and revisions, none of them perfect

  Nah, USB 3.2 Gen 2x2 SuperSpeed is the best! And it took me only 30 minutes of reading articles and wiki pages to get that information! ^(although I’m not sure what USB4 Gen 3×1 is, but it’s only x1 so can’t be that good, right?^

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  • The_Decryptor@aussie.zone ⁨2⁩ ⁨years⁩ ago

    although I’m not sure what USB4 Gen 3×1 is, but it’s only x1 so can’t be that good, right?

    It’s the initialisation mode of USB 40Gbps, luckily not something users will have to deal with

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• JackbyDev@programming.dev ⁨2⁩ ⁨years⁩ ago

  I know this is a shitpost, but what’s interesting is that even though USB doesn’t directly interrupt the CPU it’s still faster. USB is able to get the entire packet sent before PS2 even sends one. It’s very interesting. So if you ever see anyone unironically saying there is less latency call them out!

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• dejected_warp_core@lemmy.world ⁨2⁩ ⁨years⁩ ago

  Are PS/2 ports still operating on hardware interrupts these days? I would expect these to be emulated as USB devices at this point, depending on whatever I/O chipset is in play.

  The bit about USB asking the CPU is kinda true? My understanding is that it’s a packet protocol of sorts, so it’s really just writing post-it notes for each button press and leaves them on the CPU’s whiteboard for later.

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  • JackbyDev@programming.dev ⁨2⁩ ⁨years⁩ ago

    Yes, it’s true the the USB protocol has to “wait” but it gets the message sent so much faster that it doesn’t matter. Still interesting stuff though!

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• flambonkscious@sh.itjust.works ⁨2⁩ ⁨years⁩ ago

  Love it

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