Date: Sun, 05 Sep 1999 22:33:06 -0700 From: Mike Smith <mike@smith.net.au> To: Andrew Reilly <A.Reilly@lake.com.au> Cc: Warner Losh <imp@village.org>, hackers@FreeBSD.ORG Subject: Re: Limit of bus hierarchies (was Re: PCI modems do not work???) Message-ID: <199909060533.WAA16218@dingo.cdrom.com> In-Reply-To: Your message of "Mon, 06 Sep 1999 15:23:38 %2B1000." <9909061532290G.69570@gurney.reilly.home>
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> > USB doesn't present a 16550A interface to the host, so I don't think > > that sio would have a USB attachment. > > So there's going to be manufacturer-specific terminal/serial port drivers > to talk to the serial ports on USB-attached laptop docking stations, like > the Annex ethernet terminal server things? Presuming we are able to get any documentation out of any of these vendors; so far USB serial ports have been one of the worst things to enquire about. > I guess in the Windows world > they must provide 16550-virtualisation software, or else everyone's copy of > Telix or TeraTerm won't work. Or the parallel ports vs parallel-port > scanners. Or maybe these docking stations just won't work at all... Anything running under Windows uses the Windows COM driver or a replacement. If it's running in a DOS box, then it uses the 16550 virtualisation services that Windows offers, which layers over the COM driver or workalike. Basically, the same way that OS/2 does it. -- \\ The mind's the standard \\ Mike Smith \\ of the man. \\ msmith@freebsd.org \\ -- Joseph Merrick \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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