From owner-freebsd-scsi Mon Aug 12 14:08:34 1996 Return-Path: owner-freebsd-scsi Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id OAA21542 for freebsd-scsi-outgoing; Mon, 12 Aug 1996 14:08:34 -0700 (PDT) Received: from phaeton.artisoft.com (phaeton.Artisoft.COM [198.17.250.211]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id OAA21527; Mon, 12 Aug 1996 14:08:30 -0700 (PDT) Received: (from terry@localhost) by phaeton.artisoft.com (8.6.11/8.6.9) id OAA26100; Mon, 12 Aug 1996 14:00:50 -0700 From: Terry Lambert Message-Id: <199608122100.OAA26100@phaeton.artisoft.com> Subject: Re: 2 AHA1542's in one box To: narvi@haldjas.folklore.ee (Narvi) Date: Mon, 12 Aug 1996 14:00:50 -0700 (MST) Cc: mark@grondar.za, hackers@freebsd.org, scsi@freebsd.org In-Reply-To: from "Narvi" at Aug 12, 96 10:35:34 pm X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-scsi@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > Hmm.... I'm not an expert with the Adaptec cards or with the PC bus > designs, but wasn't it so that there could be only one bus master on the > ISA bus? You are thinking VESA, I think. It should work fine. He will probably have to lower "bus on" time in both cards, since they both will steal DRAM refresh cycles during DMA. He will also need to make sure that they don't share any settings, and that his non-default setting on one card do not conflict with the other. Finally, he will have to disable the BIOS on one card -- probably the B. The ^A stuff might screw the B card badly... Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.