Date: Thu, 24 Jun 1999 13:52:48 -0400 (EDT) From: "Brian F. Feldman" <green@unixhelp.org> To: Dag-Erling Smorgrav <des@flood.ping.uio.no> Cc: Bruce Evans <bde@zeta.org.au>, Doug@gorean.org, freebsd-current@FreeBSD.ORG Subject: Re: New ATA stuff, questions and comment Message-ID: <Pine.BSF.4.10.9906241352010.8871-100000@janus.syracuse.net> In-Reply-To: <xzpaetpwwr5.fsf@flood.ping.uio.no>
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On 24 Jun 1999, Dag-Erling Smorgrav wrote:
> "Brian F. Feldman" <green@unixhelp.org> writes:
> > I didn't mean that mode 2 was special, but Ultra DMA mode 2 in its entirety being
> > very nice :) The old driver never did any form of DMA for me, much less UDMA, so
> > I'm very glad to have the ATA drivers.
>
> controller wdc0 at isa? port IO_WD1 irq 14 flags 0xa0ffa0ff
>
> Will enable DMA mode with the old driver. It doesn't support UDMA on
> all chipsets (e.g. ALI), and in some cases may give very poor
> performance when using UDMA disks, but normal DMA mode should work. If
> you have UDMA disks but can't get UDMA to work, just disable UDMA in
> the BIOS setup utility and it will use normal DMA instead.
Actually, I couldn't disable UDMA in the BIOS, and UDMA didn't work. So,
the old driver did _not_ do DMA for me. Of course, I knew about the wdc
flags.
>
> DES
> --
> Dag-Erling Smorgrav - des@flood.ping.uio.no
>
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