Date: Mon, 20 Apr 1998 13:10:23 -0700 From: Mike Smith <mike@smith.net.au> To: Karl Pielorz <kpielorz@tdx.co.uk> Cc: Mike Smith <mike@smith.net.au>, hardware@FreeBSD.ORG Subject: Re: best wdc0 flags ? Message-ID: <199804202010.NAA01631@dingo.cdrom.com> In-Reply-To: Your message of "Mon, 20 Apr 1998 21:03:48 BST." <353BAA24.61AF16EC@tdx.co.uk>
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> Mike Smith wrote: > > > > The natoma apparently pushes the timing to the limit, and crappy > > > drives can't keep up (btw all my Maxtors works just fine)... > > > > If we can confirm this, then it would be wise to add a quirk entry for > > the Quantums, and go forward with the 32-bit transfer as default. > > Thus far they are working OK under 3.0-CURRENT (as of 15th(ish) of April) - > and I'm using "flags 0xa0ffa0ff", which I beleive is bus-mastering 32 bit > "max. multisector" the drive will negotiate for... Using DMA avoids the whole 32-bit-transfer issue. (No programmed I/O) > If I put them back in my 2.2.6 system and go for 32 bit / multi-sector - > they barf... Try taking Soren's advice and cutting your BIOS back to mode3 PIO. He has actual experience with these drives, so I'd be inclined to take his word for it. -- \\ 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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