From owner-freebsd-current Thu Apr 16 14:57:52 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id OAA19416 for freebsd-current-outgoing; Thu, 16 Apr 1998 14:57:52 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from mail3.aracnet.com (root@mail3.aracnet.com [205.159.88.34]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id VAA19375 for ; Thu, 16 Apr 1998 21:57:41 GMT (envelope-from beattie@aracnet.com) Received: from shell2.aracnet.com (beattie@shell2.aracnet.com [205.159.88.20]) by mail3.aracnet.com (8.8.8/8.8.5) with ESMTP id OAA31055; Thu, 16 Apr 1998 14:57:39 -0700 Received: from localhost by shell2.aracnet.com (8.8.7) id OAA14525; Thu, 16 Apr 1998 14:57:38 -0700 Date: Thu, 16 Apr 1998 14:57:38 -0700 (PDT) From: Brian Beattie To: Jim Bryant cc: freebsd-current@FreeBSD.ORG Subject: Re: Help - please... Adaptec 1542 and Exabyte tape problem... In-Reply-To: <199805201806.NAA10019@unix.tfs.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Wed, 20 May 1998, Jim Bryant wrote: > In reply: > > On Wed, 15 Apr 1998, Tom wrote: > > > > > > > > On Thu, 16 Apr 1998, Kerry Morse wrote: > > > > > > > Apr 16 13:35:05 proxy /kernel: aha0: DMA beyond end Of ISA: 0x357cd10 > > > > > > Bounce buffers are required to DMA above the 16MB for ISA devices. > > > However, bounce buffers do not work for the aha driver (it is unclear > > > whether the driver or the bounce buffers are broken). > > > > > crap.. i just sold my 1542cf for this very reason... i was wanting > it to handle low-bandwidth stuff like the CD-ROM, M-O drive, and DDS-2 > tape drive, but I kept getting the above messages... now i've got a > heck of a lot of stuff hanging off my 2940UW... i of course have > 'OPTION BOUNCE_BUFFERS' in my config... > I may be mistaken but I believe that the 2940UW is a PCI card. That being the case it does not require bounce buffers. The 2940UW is already supported by the CAM code. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message