[5472] in linux-scsi channel archive
Re: Help with SCSI card
daemon@ATHENA.MIT.EDU (Richard Waltham)
Tue Dec 22 23:28:40 1998
From: Richard Waltham <dormouse@farsrobt.demon.co.uk>
To: schaefer@alphanet.ch (Marc SCHAEFER)
Date: Wed, 23 Dec 1998 01:19:26 +0000 (GMT)
Cc: linux-scsi@vger.rutgers.edu
In-Reply-To: <75p66d$b15$1@vulcan.alphanet.ch> from "Marc SCHAEFER" at Dec 22, 98 11:24:13 pm
Marc SCHAEFER wrote:
>
> Rasana Atreya <rasana@flowerpot.corp.sgi.com> wrote:
> > - Tekram DC-390F based on Symbios Logic 53C875 chip.
>
> Yes, works very reliably with Gerard Roudier's 3.0i ncr53c8xx driver.
> The only thing I would like to know, some day, is how/if you need
> to configure termination when using bizarre setups (for now I have
> either used a fully non wide or a fully wide bus, and either
> internal or external).
>
> You want to do tricky things (the kind of things which usually
> break on the Adaptec 2940UW if you do not disable automatic
> termination).
>
> > Since the Tekram does not have an external 50-pin connector, would I be
> > able to use the ZIP drive with a 168-pin to 50-pin adapter?
>
> Theoretically yes, although you have to double check this adapter
> properly terminates the high lines. Most of the adapter sold in the
> commerce do fancy things with the high lines. Also, check that
> the adapter, if it terminates properly, terminates actively.
> Also, you can use any two of the connectors, not more, presumably.
>
The Tekram DC-390W based on the Symbios 53c825 can detect whether there is a
50 way or 68 way cable connected to the 68 way connectors. I would expect
the DC-390F to be similar, and should terminate correctly using a 68 to 50
pin adaptor. But you never know .... ;)
Bye for now
Richard
--
Richard Waltham | Work: richard@digitalinterface.demon.co.uk
At home in | Home: dormouse@farsrobt.demon.co.uk
Southampton UK | 100421.1276@compuserve.com
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