From owner-freebsd-hackers Sun Sep 5 22:41:44 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from dingo.cdrom.com (castles510.castles.com [208.214.165.74]) by hub.freebsd.org (Postfix) with ESMTP id 91A8D15BD3 for ; Sun, 5 Sep 1999 22:41:38 -0700 (PDT) (envelope-from mike@dingo.cdrom.com) Received: from dingo.cdrom.com (LOCALHOST [127.0.0.1]) by dingo.cdrom.com (8.9.3/8.8.8) with ESMTP id WAA16218; Sun, 5 Sep 1999 22:33:07 -0700 (PDT) (envelope-from mike@dingo.cdrom.com) Message-Id: <199909060533.WAA16218@dingo.cdrom.com> X-Mailer: exmh version 2.0.2 2/24/98 To: Andrew Reilly Cc: Warner Losh , hackers@FreeBSD.ORG Subject: Re: Limit of bus hierarchies (was Re: PCI modems do not work???) In-reply-to: Your message of "Mon, 06 Sep 1999 15:23:38 +1000." <9909061532290G.69570@gurney.reilly.home> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sun, 05 Sep 1999 22:33:06 -0700 From: Mike Smith Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > > 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