On Mon, Jun 04, 2001 at 12:27:11PM +0000, Pavel Machek wrote:
> Hi!
>
> > > How about ISA USB host controllers?
> >
> > Those, unfortunately, do not exist. I was shopping for one
> > in vain for a long time. One formiddable difficulty is that
> > USB bandwidth is larger than ISA, so the only feasible way
> > to make a HC is to have all TD's in its onboard memory,
> > as in VGA.
>
> USB is 1.2MB/sec while 8-bit ISA is 4MB/sec (memory-mapped).
>
> ...and OHCI does use board memory, anyway.
And strangely enough a couple of vendors offer USB-to-ISA bridges:
passive ISA backplanes that you can connect to your system using
USB. Just search for "USB ISA" with google.com ...
Dominik
-- A lovely thing to see: Kobayashi Issa through the paper window's holes (1763-1828) the galaxy. [taken from: David Brin - Sundiver] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Jun 07 2001 - 21:00:38 EST