From owner-freebsd-questions Thu Dec 16 9:28:38 1999 Delivered-To: freebsd-questions@freebsd.org Received: from disavowed.broken.net (disavowed.broken.net [204.216.142.33]) by hub.freebsd.org (Postfix) with ESMTP id 1D69414E17 for ; Thu, 16 Dec 1999 09:28:37 -0800 (PST) (envelope-from ian@disavowed.broken.net) Received: (from ian@localhost) by disavowed.broken.net (8.8.7/8.8.7) id JAA03381; Thu, 16 Dec 1999 09:27:05 -0800 (PST) Date: Thu, 16 Dec 1999 09:27:05 -0800 (PST) From: Ian Struble To: Jonathon McKitrick Cc: Alejandro Ramirez , freebsd-questions@FreeBSD.ORG Subject: RE: LBA speed enhancements In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 16 Dec 1999, Jonathon McKitrick wrote: > > On Thu, 16 Dec 1999, Alejandro Ramirez wrote: > > Are you refering to the "0xa0ffa0ff" flags???, this flags are for > >improve performance by enabling DMA use, enable the multi-sector I/O and the > >32BIT I/O modes to IDE Disks. > > Yes, and there is also a bit to set LBA mode. At least, that's what LINT > says. The specific flag that Jonathon is talking about is the '1' below. Using it we would have "0xb0ffb0ff" for flags. Which I can not say that I have ever done nor remember seeing anyone else talk about using. from /usr/src/i386/isa/wd.c: #define WDOPT_32BIT 0x8000 #define WDOPT_SLEEPHACK 0x4000 #define WDOPT_DMA 0x2000 #define WDOPT_LBA 0x1000 Ian To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message