Date: Wed, 13 Jan 1999 13:37:46 -0800 From: Mike Smith <mike@smith.net.au> To: David Webster <dwebster@bhmi.com> Cc: "hardware@FreeBSD.ORG" <hardware@FreeBSD.ORG> Subject: Re: Promise Ultra DMA PCI Disk Controller Message-ID: <199901132137.NAA01272@dingo.cdrom.com> In-Reply-To: Your message of "Wed, 13 Jan 1999 15:37:37 CST." <369D1221.177F6492@bhmi.com>
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> Well, it appears I have my answer. FreeBSD does not support it. While > the kernel will find this device it will not poll Tertiary drive > controllers for attached drives. The only option is to enable the > on-board (non Ultra DMA controller) and attach the harddrive to it. > Unfortunately you lose all the Ultra-DMA performance of your drive. > Added to that, this is a dual boot system with Windows NT which expects > to find the drive on the Promise controller. > > Since this configuration represents over a year of Gateway PC shipments > I find it rather unusual that FreeBSD does not support this or any other > Terteiary drive contrllers. With upcoming advent of Ulrta-DMA2 look for > many PC vendors to use Tertiary controllers to get 66Mbit/sec throughput > performance before they are integrated into motherboards. If I knew how > modify the kernel's code to poll Tertiary controllers I would, but I > don't. FreeBSD supports them just fine; modify the I/O settings on wdc0 to point to the tertiary controller. -- \\ 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-hardware" in the body of the message
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