From owner-freebsd-questions Mon Jun 5 17:25:40 2000 Delivered-To: freebsd-questions@freebsd.org Received: from wantadilla.lemis.com (wantadilla.lemis.com [192.109.197.80]) by hub.freebsd.org (Postfix) with ESMTP id 0D73437BE68 for ; Mon, 5 Jun 2000 17:25:35 -0700 (PDT) (envelope-from grog@wantadilla.lemis.com) Received: (from grog@localhost) by wantadilla.lemis.com (8.9.3/8.9.3) id JAA56519; Tue, 6 Jun 2000 09:55:17 +0930 (CST) (envelope-from grog) Date: Tue, 6 Jun 2000 09:55:17 +0930 From: Greg Lehey 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> References: <393C41DB.6084DE8D@usww.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0pre2i In-Reply-To: <393C41DB.6084DE8D@usww.com> Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-418-838-708 WWW-Home-Page: http://www.lemis.com/~grog X-PGP-Fingerprint: 6B 7B C3 8C 61 CD 54 AF 13 24 52 F8 6D A4 95 EF Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG 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: 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