From owner-freebsd-stable Tue Apr 10 17:24:53 2001 Delivered-To: freebsd-stable@freebsd.org Received: from xena.gsicomp.on.ca (cr677933-a.ktchnr1.on.wave.home.com [24.43.230.149]) by hub.freebsd.org (Postfix) with ESMTP id 847BB37B423 for ; Tue, 10 Apr 2001 17:24:46 -0700 (PDT) (envelope-from matt@gsicomp.on.ca) Received: from hermes (hermes.gsicomp.on.ca [192.168.0.18]) by xena.gsicomp.on.ca (8.11.1/8.11.3) with SMTP id f3B0MlR27549; Tue, 10 Apr 2001 20:22:47 -0400 (EDT) (envelope-from matt@gsicomp.on.ca) Message-ID: <003301c0c21d$2c4b0cd0$1200a8c0@gsicomp.on.ca> From: "Matthew Emmerton" To: "Cyrille Lefevre" Cc: References: <02db01c0c1b1$c1a0ffe0$0508a8c0@lofi.dyndns.org><20010410123317.A73359@irrelevant.org><200104101342.f3ADgsn15019@bmah-freebsd-0.cisco.com> Subject: Re: ATA_ENABLE_ATAPI_DMA gone? Date: Tue, 10 Apr 2001 20:20:10 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > the ata(4) manual page isn't clear about the difference between > hw.ata.ata_dma (where ata-disk.c says ATA disk DMA mode control) and > hw.ata.atapi_dma (where atapi-all.c says ATAPI device DMA mode control) ? ATA devices are hard disks. ATAPI devices are everything else (tape drives, floppy drives - including ZIP drives, and CD-ROM and DVD drives). ATA was originally developed as a standard for hard drives, and was later extended to support other devices. Hence, ATAPI, where PI stands for "Peripheral Interconnect" or something like that. -- Matt Emmerton To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message