Date: Thu, 22 Oct 1998 16:35:05 -0700 From: Mike Smith <mike@smith.net.au> To: Greg Lehey <grog@lemis.com> Cc: Jason Thorpe <thorpej@nas.nasa.gov>, Nick Hibma <nick.hibma@jrc.it>, Mike Smith <mike@smith.net.au>, FreeBSD hackers mailing list <hackers@FreeBSD.ORG> Subject: Re: multi-user: multiple consoles in FreeBSD Message-ID: <199810222335.QAA01865@dingo.cdrom.com> In-Reply-To: Your message of "Fri, 23 Oct 1998 08:53:39 %2B0930." <19981023085339.H28824@freebie.lemis.com>
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> > Some display controllers (notably, 3D accellerators) have a jumper > > to disable VGA mode completely, but then you only get a memory > > mapped frame buffer (if you're lucky :-) > > Hmm. I think this is your proviso. You specifically mean VGA > compatibility. Well, yes, if you want a graphics board to conform to > a standard which only allows one board, then you can only use one > board. But there's more than just a frame buffer if you disable this > feature. Jason's gripe was that you con't have more than one video card because the second wants its VGA-compatibility registers mapped in the same place as the first. Unless there's something really odd going on, it's relatively trivial to simply map the I/O ranges for display cards other than the first somewhere else; you just need the smarts in your system to do this. Video chipsets not supporting this would be in violation of the PCI spec. I wouldn't expect this to be too common. -- \\ 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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