Date: Thu, 24 Jan 2002 11:53:50 -0800 From: "Lawrence Sica" <lomifeh@hotmail.com> To: "Dmitry Morozovsky" <marck@rinet.ru>, <scotty@klement.dstorm.net> Cc: "Dmitry Valdov" <dv@dv.ru>, "Bill Moran" <wmoran@potentialtech.com>, <stable@FreeBSD.ORG>, <sos@FreeBSD.ORG> Subject: Re: ATA driver feature request Message-ID: <OE24YxgSgFFphDuhESU00019dfa@hotmail.com> References: <20020124224757.O60455-100000@woozle.rinet.ru>
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----- Original Message ----- From: "Dmitry Morozovsky" <marck@rinet.ru> To: <scotty@klement.dstorm.net> Cc: "Dmitry Valdov" <dv@dv.ru>; "Bill Moran" <wmoran@potentialtech.com>; <stable@FreeBSD.ORG>; <sos@FreeBSD.ORG> Sent: Thursday, January 24, 2002 11:50 AM Subject: Re: ATA driver feature request > On Tue, 22 Jan 2002 scotty@klement.dstorm.net wrote: > > [snip] > > > > Yes. When I disconnect secondary (non ATA-66/100 compliant) drive from this > > > cable, FreeBSD use ATA-100 on primary. > > > > atapci0: <VIA 82C686 ATA66 controller> port 0xd000-0xd00f at device 7.1 on pci0 > > ata0: at 0x1f0 irq 14 on atapci0 > > ata1: at 0x170 irq 15 on atapci0 > > . . . > > ad0: 19458MB <ST320420A> [39535/16/63] at ata0-master UDMA66 > > ad1: 76319MB <WDC WD800BB-40BSA0> [155061/16/63] at ata0-slave UDMA66 > > ata1-master: DMA limited to UDMA33, non-ATA66 compliant cable > > ad2: 76319MB <WDC WD800BB-40BSA0> [155061/16/63] at ata1-master UDMA33 > > ad3: 2503MB <FUJITSU MPA3026ATU> [5086/16/63] at ata1-slave UDMA33 > > > > They are the exact same drives using the exact same cable. My controller > > only supports UDMA66, not 100... but the reason that the 2nd controller > > seems to print out "non-ATA66 compiant cable" appears to simply be that > > ad3 is only ATA33 capable. > > > > Just thought I'd pipe up, since the subject came up :) > > Hmm, can ever ATA controller clock out both master device at 66MHz and > slave at 33MHz? I suppose the effect is *not* unexpected. > > However, the warning message would be slightly reworded like "non-ATA66 > compliant cable or second device" > That is the biggest drawback of ide i thought, itso nly as fast as the slowest device on the controller... --Larry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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