Date: Thu, 26 Sep 1996 10:10:07 -0500 (CDT) From: Steve Price <sprice@hiwaay.net> To: Ernest Hua <hua@chromatic.com> Cc: hardware@FreeBSD.org Subject: Re: more than 2 IDE controllers? Message-ID: <Pine.OSF.3.94.960926100208.30414A-100000@fly.HiWAAY.net> In-Reply-To: <199609261327.GAA07996@server1.chromatic.com>
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On Thu, 26 Sep 1996, Ernest Hua wrote: # # Ok. I got two answers .. "Yes" and "No". # # Does anyone have a definitive explanation for WHY the answer # is "Yes" or "No"? # # Please post your answer to the list. # # Thanks! # # Ern # Let me clarify my answer to you. I don't know of any technological miracles that have to be performed to have >2 controllers. However, I have not seen it done. I do know that up to ATA-3 the spec only provides for two controllers (one master and one slave). In light of this, most (if not all) BIOSs only know about these two locations. I know that specs are sometimes fuzzy, but I think the section that states that there are only two STANDARD locations, is fairly clear. In conforming to the spec, most IDE controller cards are designed to live in one of these two standard places. To get a definitive answer, try posting your question to ata@dt.wdc.com. The people that read that list are ATA gurus/designers. So if anybody knows, they will. Steve
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