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Date:      Fri, 16 Aug 1996 21:46:53 -0500
From:      "Daniel M. Eischen" <deischen@iworks.InterWorks.org>
To:        darrylo@hpnmhjw.sr.hp.com, kottm@pfizer.co.jp, questions@FreeBSD.ORG
Subject:   Re: Help! Cannot install from Adaptec AHA-2940AU PCI Ultra SCSI 
Message-ID:  <9608170246.AA26712@iworks.InterWorks.org>

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> > I have been attempting, with no progress to install FreeBSD. I am 
> > trying to install from the Walnut Creek CD, 2.1 Release.
>      [ ... ]
> > Mother board: Iwill P55TV, built in Adaptec PCI Ultra SCSI (AIC 7860 
> > chip) which is the same as Adaptec AHA-2940AU PCI SCSI controller.
>
>      I don't think this is the same as a 2940.  It's an Adaptec chip,
> and may have similar functionality to a 2940, but I don't think it's the
> same as a 2940.  I've seen claims of it being a "2940", but I haven't
> seen that claim in a while (which makes me think that Adaptec maybe
> threatened legal action against someone making questionable claims --
> does anyone have any real information?).
>
>      If you're lucky, you can install 2.1.5 (2.1 will not work).  The
> 2.1.5 release has support for the AIC 7850 controller, and so it may
> also work with your 7860 (how similar are these chips?).
>
>      -- Darryl Okahata
>         Internet: darrylo@sr.hp.com

Yes, the 2.1.5 Release of FreeBSD should work on the 7860 controller 
chip.  The 7860 is just an Ultra version of the 7850 controller.
Both the 7850 and the 7850 are *not* totally compatible with the 
aha2940 (7870/7880) adapters.  Where the 7870 and 7880-based adapters
have 15 internal SCBS, the 7850 and 7860 have only 3 SCBs.
 

Dan Eischen
deischen@iworks.InterWorks.org



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