Date: Wed, 30 Jul 1997 20:55:24 +0200 From: Stefan Esser <se@FreeBSD.ORG> To: Jason Young <doogie@forbidden-donut.anet-stl.com> Cc: john hood <cgull@smoke.marlboro.vt.us>, =?iso-8859-1?Q?S=F8ren_Schmidt?= <sos@sos.freebsd.dk>, freebsd-current@FreeBSD.ORG Subject: Re: code talks: announcing EIDE bus master patches Message-ID: <19970730205524.12427@mi.uni-koeln.de> In-Reply-To: <Pine.BSF.3.96.970730130024.28527E-100000@forbidden-donut.anet-stl.com>; from Jason Young on Wed, Jul 30, 1997 at 01:01:39PM %2B0000 References: <199707301049.GAA03660@smoke.marlboro.vt.us> <Pine.BSF.3.96.970730130024.28527E-100000@forbidden-donut.anet-stl.com>
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On Jul 30, Jason Young <doogie@forbidden-donut.anet-stl.com> wrote: > > you have a 486-class machine that doesn't have busmastering IDE. it's > > not even a PCI bus machine. you just happened to turn on the > > already-existing multi-block and 32-bit PIO flags in your latest > > kernel upgrade. > > > > folks: performance with the default flags on the wd driver is > > *terrible*, and the flags should always be configured for your > > machine. see LINT for details. > > Yes it's 486-class, but it has a PCI bus. Otherwise I wouldn't have > bothered with the code. I don't think there is bus-master EIDE support in any 486 class PCI chip set. And besides, you also need a hard disk that knows about DMA modes. Most dind't until recently ... Regards, STefan
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