Yeah but try pressing more than 4 keys at once on the PS2 keyboard and get back to me
Comment on It will outlive us all
dashydash@lemmy.world 7 months ago
Xenny@lemmy.world 7 months ago
e8d79@discuss.tchncs.de 7 months 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.
frezik@midwest.social 7 months ago
USB is not limited to 10, or 6 as is sometimes stated.
e8d79@discuss.tchncs.de 7 months ago
Interesting I did not know that.
blarth@thelemmy.club 7 months ago
This, it’s why I still use the PS2 interface. Full n-key rollover is impossible for me to do without.
frezik@midwest.social 7 months ago
USB does not have that limitation.
Theharpyeagle@lemmy.world 7 months 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.
Xenny@lemmy.world 7 months ago
Well I never had a fancy gaming keyboard back in the PS2 days lol
e8d79@discuss.tchncs.de 7 months 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.
intensely_human@lemm.ee 7 months ago
Dude just switch to vim already
dashydash@lemmy.world 7 months ago
Dude, just switch to Webstorm already
lud@lemm.ee 7 months ago
Is CS available in vim yet?
embed_me@programming.dev 7 months ago
Idk but Doom runs pretty well
dan@upvote.au 7 months 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.
JackbyDev@programming.dev 7 months ago
USB supports NKRO as well as the default 6KRO.
dan@upvote.au 7 months ago
Historically it didn’t support it though, whereas PS/2 always did.
drathvedro@lemm.ee 7 months 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.
AnUnusualRelic@lemmy.world 7 months ago
Preposterous, I’ve used emacs on a ps2 keyboard without issues.
morbidcactus@lemmy.ca 7 months 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.
Anarki_@lemmy.blahaj.zone 7 months ago
Ok, but why would you ever?
SkyeStarfall@lemmy.blahaj.zone 7 months ago
Video games
Anarki_@lemmy.blahaj.zone 7 months ago
Never had issues with it, but fair. Different strokes.
Xenny@lemmy.world 7 months ago
Try playing a rhythm game on a PS2 keyboard 😟
trainden@lemmy.blahaj.zone 7 months 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?^
The_Decryptor@aussie.zone 7 months 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
JackbyDev@programming.dev 7 months 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!
dejected_warp_core@lemmy.world 7 months 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.
JackbyDev@programming.dev 7 months 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!
flambonkscious@sh.itjust.works 7 months ago
Love it
Toes@ani.social 7 months ago
A bunch of those points about ps2 are no longer accurate, it’s emulated on modern computers.
Wizard_Pope@lemmy.world 7 months ago
Don’t tell me they nerfed ps2
dashydash@lemmy.world 7 months ago
Sad day to have eyes
Wizard_Pope@lemmy.world 7 months ago
Sad days tp ahve a PS2 keyboard ot mouse