3 ms·
Some gamers still prefer PS/2 if given the choice, even though there's little technical advantage. Although their most cited reason (key rollover) isn't valid;
by Zr40 13y ago
Some gamers still prefer PS/2 if given the choice, even though there's little technical advantage. Although their most cited reason (key rollover) isn't valid; the keyboard determines how many simultaneous key presses it will transmit over USB.
- jksmith 13y agoHuge advantage. Whip out that 5lb Model M and get to clicking. Typing on an original right now.
- indlebe 13y agon key rollover is determined by the keyboard and the connector, if the keyboard supports it and your interface is PS/2 you do get full rollover.
- bri3d 13y agohttp://superuser.com/questions/16893/do-usb-or-ps-2-keyboards-respond-faster http://superuser.com/questions/16893/do-usb-or-ps-2-keyboard... PS/2 keyboards observationally are known to have a bit less latency. Since there are a ton of variables at play (keyboard controller, USB poll rate, PS/2 interrupt queuing, etc.) it's hard to evaluate just how much the difference will be with any given setup.
- falcolas 13y agoIt seems it's less about what the keyboard sends, and what the standard protocol allows: http://geekhack.org/index.php?topic=5572.msg85020#msg85020 http://geekhack.org/index.php?topic=5572.msg85020#msg85020 I'm sure a keyboard could set up their own driver that allows more key presses, but that's certainly not the standard.
- tree6014 13y agoMax Keyboard were the first to crack N-Key rollover over USB. Can't say enough about their NightHawk X8... http://www.maxkeyboard.com/max-keyboard-nighthawk-x8-blue-backlit-mechanical-keyboard.html http://www.maxkeyboard.com/max-keyboard-nighthawk-x8-blue-ba...
- eco 13y agoMy understanding of how n-key rollover was finally implemented in USB keyboards was by putting a USB hub in the keyboard and having the keyboard pretend to be several keyboards all at once.
- wyager 13y agoThe only ways to get n-key rollover over USB are through dirty hacks (like USB hub emulation) or through non-standard drivers. It is an issue.