From owner-freebsd-questions@FreeBSD.ORG Wed Apr 27 02:50:19 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E437E16A4CE for ; Wed, 27 Apr 2005 02:50:19 +0000 (GMT) Received: from web54003.mail.yahoo.com (web54003.mail.yahoo.com [206.190.36.227]) by mx1.FreeBSD.org (Postfix) with SMTP id 6956643D2F for ; Wed, 27 Apr 2005 02:50:19 +0000 (GMT) (envelope-from spamrefuse@yahoo.com) Received: (qmail 5085 invoked by uid 60001); 27 Apr 2005 02:50:18 -0000 Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; b=ZbCmKK39KWSIqk6ISeobbaBRZ1bLZbmoew/1NuwkBptmnqhGJeqo+HNUmT1SPi8hNk6OVtl3gDYp5Praqt4TM2Nd64Jgthfe5Ct7x6wckY6gVX6Ru8/hyTZUULJvGhDzq25btPRITOU9F5UJ2C4o69rn+Zfd/daFi/qxC4sDgIM= ; Message-ID: <20050427025018.5083.qmail@web54003.mail.yahoo.com> Received: from [147.46.44.181] by web54003.mail.yahoo.com via HTTP; Tue, 26 Apr 2005 19:50:18 PDT Date: Tue, 26 Apr 2005 19:50:18 -0700 (PDT) From: Rob To: rees@ddcom.co.jp MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii cc: FreeBSD questions Subject: Re: What is ata2 ? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Apr 2005 02:50:20 -0000 Joel wrote: > On Tue, 26 Apr 2005 18:44:18 -0700 (PDT) > Rob wrote >> >>I'm running FreeBSD on a range of PCs, from >> Pentium-1 (60 MHz) to Pentium-4 (2.60GHz), though >> none but one has a 'ata2' line in the dmesg output: >> >> ata0: channel #0 on atapci0 >> ata1: channel #1 on atapci0 >> ... >> ata2: at port >> 0x36e-0x36f,0x168-0x16f irq 10 on isa0 >> ad0: 6149MB >> [13328/15/63] at ata0-master UDMA33 >> ad1: 4892MB >> [10602/15/63] at ata0-slave UDMA33 >> acd0: CDROM at ata1-master PIO4 >> >>What is so special about this particular PC, that >>it has an ata2, unlike all other PCs I have? >> >>Can I add more than 4 disks (2 masters + 2 slaves) >>to this PC? Or is this ata2 for something else? > > From here, with the limited information you've > provided, I'm guessing you can, if you have the > cables and the spare power connectors. I'm quite keen on trying to understand this. So let me try to provide more information below. As above lines show, the ata2 controller is on interrupt 10: # vmstat -i interrupt total rate irq0: clk 10392173 100 irq1: atkbd0 1 0 irq3: sio1 219 0 irq4: sio0 1 0 irq8: rtc 13301014 128 irq11: rl0 uhci0 187119 1 irq13: npx0 1 0 irq14: ata0 491426 4 irq15: ata1 46 0 Total 24372000 234 But interrupt 10 is not there !?! # atacontrol list ATA channel 0: Master: ad0 ATA/ATAPI revision 4 Slave: ad1 ATA/ATAPI revision 4 ATA channel 1: Master: acd0 ATA/ATAPI revision 0 Slave: no device present ATA channel 2: Master: no device present Slave: no device present ---------------------- You also mentioned USB possibility: # grep -i usb /var/run/dmesg.boot uhci0: port 0xe000-0xe01f irq 11 at device 7.2 on pci0 usb0: on uhci0 usb0: USB revision 1.0 What would you conclude from this? Is this ata2 another IDE controller, so that I can add 6 (instead of the normal 4) harddisks/cdroms etc. to this computer? Thanks, Rob. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com