Date: Mon, 16 Apr 2001 21:49:28 -0600 From: "Justin T. Gibbs" <gibbs@scsiguy.com> To: "Ken Seefried" <ken@seefried.com> Cc: AIC7xxx@FreeBSD.ORG Subject: Re: Need some info Message-ID: <200104170349.f3H3nSs20492@aslan.scsiguy.com> In-Reply-To: Your message of "Tue, 17 Apr 2001 03:24:57 GMT." <20010417032457.20495.qmail@mail.seefried.com>
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>> I've never heard of any such product. Perhaps at one point there was >> a parity engine with this chip name, but it would only have appeared >> on RAID boards like the AAC-3464. AAA and ARO boards use either the >> 7810 or 7815. It is certainly not an Adaptec SCSI chip. >> > >Well...no. A trivial amount of time on Dogpile turns up an answer. As it >happens, in my own parts bin, the Adaptec 1542CF (reasonably common, no?) >has an Adaptec AIC-7970Q chip right in the middle. The chip used on the 1542 was never released as a stand-alone product. Perhaps it appeared on a few disk drives, but unlike the 6260/6360/6370, was not meant for stand-alone (on motherboard or otherwise) use. But yes, the chip ID was not familiar - I doubt I ever removed the decals on the 154X cards I've used or writen drivers for. You don't program to a 7970 directly but rather always through an interface provided by a processor like the z80 on the 1542. >While I definately don't rank a "scsiguy.com" email address, it's pretty >clear the AIC-7970 is an Adaptec SCSI chip, on a shipping product, wether >you have heard of it or not. The 1542 is not a shipping product. I don't recall exactly when it was discontinued, but it was some time ago. The 7970 has also been discontinued. For its time, the 1542 was a very good product. I'm sure there are lots of people who have a card or two in their own private pile of cards. -- Justin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe aic7xxx" in the body of the message
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