Date: Mon, 20 Apr 1998 12:05:28 -0700 From: Mike Smith <mike@smith.net.au> To: "Gregory P. Smith" <greg@nas.nasa.gov> Cc: Mike Smith <mike@smith.net.au>, Nick Hibma <nick.hibma@jrc.it>, freebsd-hackers@FreeBSD.ORG, Mark Willey <willey@etla.net> Subject: Re: FreeBSD USB project, help requested Message-ID: <199804201905.MAA01275@dingo.cdrom.com> In-Reply-To: Your message of "Mon, 20 Apr 1998 11:25:16 PDT." <199804201825.LAA02382@ryouko.nas.nasa.gov>
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> > Get the OHCI standard and work from that. (Which is what I have done > > for my unknown Toshiba chipset.) The whole idea behind OHCI is that > > you don't have to know what sort of chipset you have, and we shouldn't > > care at all. > > That's what I gathered from my USB book and the SiS 5598 specs. I do > have one question about the 5598 and OHCI since I don't have the raw > OHCI specs yet (if you have a URL handy it'd be appreciated). The Start at http://www.microsoft.com/hwdev; it's buried in there somewhere in Word 7 format, if I remember correctly. If someone with a copy of Acrobat Distiller for Windows was to make a PDF version, we'd be very happy I'm sure. 8) > 5598 has 4 registers starting at offset 100h to control the host > controller emulation mode. Are these OCHI or is this 5598 specific? They're not part of the OHCI specification, no. > The chipset can apparently emulate a traditional keyboard and mouse > interface from USB attached devices without even needing a usb driver, > etc. I haven't tested it. The emulation should be transparent, and configured by the BIOS. I would avoid doing anything with stuff outside the OHCI spec at this point in time (lowest common denominator). -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ 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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