From owner-freebsd-current Mon Jan 13 12:54:03 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.4/8.8.4) id MAA04807 for current-outgoing; Mon, 13 Jan 1997 12:54:03 -0800 (PST) Received: from GndRsh.aac.dev.com (GndRsh.aac.dev.com [198.145.92.241]) by freefall.freebsd.org (8.8.4/8.8.4) with ESMTP id MAA04796 for ; Mon, 13 Jan 1997 12:53:58 -0800 (PST) Received: (from rgrimes@localhost) by GndRsh.aac.dev.com (8.7.5/8.7.3) id MAA13764; Mon, 13 Jan 1997 12:53:37 -0800 (PST) From: "Rodney W. Grimes" Message-Id: <199701132053.MAA13764@GndRsh.aac.dev.com> Subject: Re: multiple 2842 controllers In-Reply-To: <199701130732.SAA10914@asstdc.scgt.oz.au> from michael butler at "Jan 13, 97 06:32:10 pm" To: imb@scgt.oz.au (michael butler) Date: Mon, 13 Jan 1997 12:53:37 -0800 (PST) Cc: current@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL25 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-current@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > Sorry .. I know this isn't quite the place but "the people who know" are in > here .. > > I have an old 486DX/4 motherboard that I was trying to squeeze two Adaptec > 2842 controllers onto .. a small(-ish) news server. It has 3 VL slots but > they're documented as "J18 & J19 are master 0, J20 is master 1". > > I tried the controllers in J18 & J19 but the second one has all sorts of > bother, can't read IRQ correctly from EEPROM and selects 3.6 meg async for a > Quantum Atlas 4.3G .. not quite what I was after :-( > > I couldn't take the machine down for longer than ~15 mins so I thought I'd > ask here before making customers any more cranky .. do I have to have them > in J18 & J20 for this to work ? Close. When they say ``J18 & J19 are master 0'' it really means that only one of the slots can be used for a master card, so you can put a master in slot J18 OR J19 AND J20. Thus you could use J18 & J20 OR J19 & J20 for the 2842's. Good luck.... -- Rod Grimes rgrimes@gndrsh.aac.dev.com Accurate Automation, Inc. Reliable computers for FreeBSD