Date: Tue, 6 Jun 2000 09:55:17 +0930 From: Greg Lehey <grog@lemis.com> To: unix@usww.com Cc: freebsd-questions@FreeBSD.ORG Subject: Re: ATA 66 UDMA MODE 4 w/Amptron 3748LMRT Message-ID: <20000606095517.K55519@wantadilla.lemis.com> In-Reply-To: <393C41DB.6084DE8D@usww.com> References: <393C41DB.6084DE8D@usww.com>
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On Monday, 5 June 2000 at 20:12:11 -0400, unix@usww.com wrote: > The Amptron 3748 is capable of UDMA4 but I noticed that the man ata only > support 33. dmesg output also show atapci0: <SiS 5591 ATA33 > controller>... The bio shows mode 4. I have built several of these > systems with Maxtor 20 gig and FreeBSD 4.0, assuming that it would use > mode 4. To my suprise it does not. Is there a patch/fix/update that > anyone knows of. Or will 4.1 allow mode 4. > > # man ata > ...snip... > AMD 756 Ultra DMA 66 (UDMA4), 66 MB/sec > HighPoint HPT366 Ultra DMA 66 (UDMA4), 66 MB/sec > Promise Ultra-33 Ultra DMA 33 (UDMA2), 33 MB/sec > Promise Ultra-66 Ultra DMA 66 (UDMA4), 66 MB/sec >>>>> SiS 5591 Ultra DMA 33 (UDMA2), 33 MB/sec <<< > VIA 82C586 Ultra DMA 33 (UDMA2), 33 MB/sec > VIA 82C686 Ultra DMA 66 (UDMA4), 66 MB/sec > ...snip... The SiS 5591 doesn't support UDMA4. Greg -- When replying to this message, please copy the original recipients. For more information, see http://www.lemis.com/questions.html Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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