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Author Topic: N-Key Rollover over USB  (Read 6188 times)

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Offline Viett

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  • Posts: 224
N-Key Rollover over USB
« on: Fri, 16 October 2009, 17:39:26 »
Might be completely crazy...

but isn't it possible to exceed 6 key rollover over USB by emulating multiple keyboards?

I tried plugging three keyboards into a USB hub and easily got 12+ (Ran out of fingers).

So why not emulate a hub and on top of that multiple keyboards to exceed 6 key rollover? That way one USB keyboard with this emulation can exceed 6KRO and still only use 1 USB port.
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Offline AndrewZorn

  • Posts: 1086
N-Key Rollover over USB
« Reply #1 on: Fri, 16 October 2009, 17:42:37 »
cant wait to see logitech's new gaymin board...

BY USING THE POWER OF MULTIPLE USB PORTS... LOGITECH YET AGAIN OUTPERFORMS THE COMPETITION FOR YOUR GAYMIN NEEDS.  UTILIZING DUALPLUG (R) TECHNOLOGY, THE G199 CAN REGISTER UP TO 24 KEYS AT ONCE.

(the image is in reverse, but yeah)
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Offline Mr.6502

  • Posts: 77
N-Key Rollover over USB
« Reply #2 on: Fri, 16 October 2009, 18:22:16 »
I get the feeling the 6 key limit is being worked around pretty effectively.  In Vista the Razer Tarantula using standard Windows HID Keyboard drivers supports up to at least 15 keys at once the last time I mashed my hands across one.

They might have built something into the driver specifically to accommodate the Tarantula.  But now that the support is in there, maybe other keyboards using the same type of firmware on the keyboard could take advantage of this as well.
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Offline hyperlinked

  • Posts: 924
N-Key Rollover over USB
« Reply #3 on: Fri, 16 October 2009, 23:55:33 »
Quote from: Viett;126200
I tried plugging three keyboards into a USB hub and easily got 12+ (Ran out of fingers).


That's cool. I didn't know you were a polydactyl.
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Topre: Realforce 103U Cherry: Filco Majestouch 104 (Brown), Ione Scorpius M10 (Blue)
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Offline panat000

  • Posts: 4
N-Key Rollover over USB
« Reply #4 on: Thu, 05 November 2009, 12:49:52 »
Quote from: hyperlinked;126292
That's cool. I didn't know you were a polydactyl.

lol so funny :laugh:
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Offline itlnstln

  • Posts: 7048
N-Key Rollover over USB
« Reply #5 on: Thu, 05 November 2009, 14:57:00 »
I wonder how that guy figured out which finger to put his wedding ring on.  I'm not sure what he's trying to do, but it sure is an interesting way of doing jazz hands.
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Offline Viett

  • Thread Starter
  • Posts: 224
N-Key Rollover over USB
« Reply #6 on: Thu, 05 November 2009, 16:04:34 »
  • Two-player games that use one keyboard as two game pads (Liero).
  • Console games played on the keyboard (can require 8 or more).
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Keyboards: FKBN87MC/NPEK, Dell AT101W (Black), IBM Model M 1391401 (91) x 2, Deck 82 Fire, Cherry MX8100 (Clears), Siig Minitouch
Layouts: Colemak (100WPM), QWERTY (100WPM) -- Alternative Layouts Review
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