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Re: USB Hardware

OHCI is a standard which implments the usb stack mostly in hardware.
UHCI implements it mostly in software.  As such, UHCIis far more likely
to have 64-bit issues.  Personally I have had numerous problems with my
alpha and UHCI that I was unable to track down.

Try to find an OHCI.  Perhaps they are more common now than when I
bought my UHCI (3 years ago?).  Also perhaps the UHCI stack has improved
in that time...I haven't used alpha/USB in over a year.

-- Bob

Steve Langasek [vorlon@debian.org] wrote:
> On Sun, Dec 05, 2004 at 04:05:04PM +0000, gl :) wrote:
> > On 05/12/2004 04:59:33, Tyson Whitehead wrote:
> > >Does anyone have some advice about what type of USB PCI card to get
> > >(so I can
> > >expect it to work under Debian on a PWS500au).  I recall someone
> > >saying a
> > >while ago that USB under Alpha was not so well supported?
> > It just works.
> > I put a PCI USB controller with four ports into Miata.
> > I bought it at local shop without checking for compatibility.
> > It was a NEC chipset recognized as OCHI controller.
> Ditto, the card I have is listed as USB Controller: NEC Corporation USB
> (rev 41).  PCI ID is 1033:0035, it supports both OHCI and EHCI under 2.4.27.
> Didn't do any compatibility checks before buying it.
> -- 
> Steve Langasek
> postmodern programmer

Bob McElrath [Univ. of California at Davis, Department of Physics]

    "It's not the people who vote that count. It's the people who count the
    votes." -- Joseph Stalin

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