Date: Sun, 28 Dec 1997 22:47:13 -0500 (EST) From: Daniel Eischen <eischen@vigrid.com> To: lnz@dandelion.com, mikebw@bilow.bilow.uu.ids.net Cc: aic7xxx@FreeBSD.ORG Subject: Re: Speaking of onboard SCSI controllers Message-ID: <199712290347.WAA28498@pcnet1.pcnet.com>
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> Date: Sun, 28 Dec 97 22:53:00 -0000 > From: mikebw@bilow.bilow.uu.ids.net (Mike Bilow) > > No. There are three connectors: > > A. Internal wide > B1. Internal narrow > B2. External wide > > You can use: > > 1. A only -- termination high on, low on > 2. B1 only -- termination high on, low on > 3. B2 only -- termination high on, low on > 4. A and B1 -- termination high on, low off > 5. A and B2 -- termination high off, low off > > In the AHA-2940 card, the B1 and B2 connectors are essentially the same, and > you can use only of the two at a time. In your motherboard, both of the B1 > and B2 connectors are probably represented by the single narrow connector. > You can probably therefore use both motherboard connectors at the same time, > as long as you set termination on the motherboard to high on, low off. > > There must be something different with the 2940UW versus similar host adapters > made by other vendors. On the BT-958 and FlashPoint LW, there are also three > connectors as above, but any two out of the three may be used. I believe the > Symbios SYM8751SP is similar in that regard. I think you can use any two of the three connectors. On my outdated 2940W, that is the case anyways. Dan Eischen deischen@iworks.InterWorks.org
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