*BSD News Article 85379


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Newsgroups: comp.unix.bsd.freebsd.misc
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From: richard@cogsci.ed.ac.uk (Richard Tobin)
Subject: Re: NCR or Symbios SCSI Controller
Message-ID: <E2q37p.L4L@cogsci.ed.ac.uk>
Organization: HCRC, University of Edinburgh
References: <32B5B05F.77E0@zedat.fu-berlin.de>
Date: Fri, 20 Dec 1996 17:28:37 GMT
Lines: 15
Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:32904

In article <32B5B05F.77E0@zedat.fu-berlin.de> Gerd Truschinski <agni@zedat.fu-berlin.de> writes:
>But am I right that they eat some of the bandwidth of the bus?
>They have parts of the SCSI driver in RAM, so they have to 
>read from RAM from time to time.

I think you're confused.  The thing that's unusual about many NCR
adaptors is that they don't have a BIOS rom on the card, rather it's
part of the motherboard BIOS (which is why they only work with
suitable motherboards).  This makes no difference to performance,
and in any case the BIOS isn't used by BSD except when booting.

-- Richard

-- 
"Nothing can stop me now... except microscopic germs"