On Wed, 25 Feb 2004 07:12:29 -0500
Bryan Phinney <[EMAIL PROTECTED]> wrote:
> On Wednesday 25 February 2004 05:22 am, John Richard Smith wrote:
>
> > Yes, good thinking,
> > I think usb-ohci,and usb-uhci, actually refers to usb ports that
> > are either built into the mobo or are, how do you call it, on a riser
> > board, and are attatched by cable to the mobo(not PCI). In my case two
> > attatched ,4 floating, so to speak, but which is USB1 and USB2 is
> > questionable. the manual is not clear, so I am still guessing that maybe
> > whether something is usb1 or usb2 depends upon the hardware ?
>
> The 2.0 plugs should be in a different spot depending on your case and where
> you have connectors. I have a riser board on mine that puts plugs in one of
> the expansion bays on the front of the machine. Since they are backwards
> compatible, a 1.1 device should work fine but the hardware is not the same
> and should give you different readings. If you have KDE, go to
> Configuration, KDE, Information, USB Devices and you can see a list of your
> hubs and information about them.
>
> > As for ehci-hcd I haven't a clue ?
This, from the netBSD manual:
The ehci driver provides support for the USB Enhanced Host Controller
Interface, which is used by USB 2.0 controllers.
EHCI controllers are peculiar in that they can only handle the USB 2.0
protocol. This means that they normally have one or more companion
controllers (i.e., ohci or uhci) handling USB 1.x devices.
Consequently each USB connector is electrically connected to two USB
controllers. The handling of this is totally automatic, but can be
noticed since USB 1.x and USB 2.0 devices plugged in to the same
connector appear to connect to different USB busses.
> The ehci-hcd is the module for USB 2.0 Controller Hub on my machine. UHCI is
> the one for 1.1 Hubs. The KDE Info module shows a Speed of 480Mbs for USB
> 2.0 on my machine but previous reading suggested that the 2.4 kernels don't
> support true USB 2.0 speeds. I don't have any 2.0 devices for testing.
>
Same here. usbview reprts "high" speed and names the ehci-ocd module.
Have you any idea how you would test the actual transfer speed? I have an
Amacom USB2.0 drive. It would be interesting to see how close to 480Mbs it
gets.
--
Len Lawrence
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I have never understood this liking for war. It panders to instincts
already catered for within the scope of any respectable domestic establishment.
-- Alan Bennett
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