USB Slave mode - FreeBSD emulate a CDROM device?

Bernd Walter ticso at cicely12.cicely.de
Wed Jan 16 05:06:13 PST 2008


On Mon, Jan 14, 2008 at 07:26:34PM +0100, Torfinn Ingolfsen wrote:
> On Sun, 13 Jan 2008 09:01:55 -0700 (MST)
> "M. Warner Losh" <imp at bsdimp.com> wrote:
> 
> > Because the usb hardware doesn't support it.  USB is a unidirectional
> > tree.  PC Hardware is the top end of the tree.  It can't be downstream
> > in the tree.
> 
> It is good to have this infoformation confirmed. That way we avoid
> theses questions in the future.

There is something special named USB On-The-Go, but this is basicly just
a USB device and USB host sharing the same connector.
The intention is attach picture cameras directly to printers and such.
But practically it is better to have different connectors of course
and only sensefull if you don't have enough space for both connectors.

-- 
B.Walter                http://www.bwct.de      http://www.fizon.de
bernd at bwct.de           info at bwct.de            support at fizon.de


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