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From: j@bonnie.heep.sax.de (J Wunsch)
Newsgroups: comp.periphs.scsi,comp.os.linux.hardware,comp.unix.bsd.freebsd.misc,comp.os.linux.setup
Subject: Re: SCSI PCI host adapter
Date: 1 Sep 1995 12:12:39 +0200
Organization: Private U**x site, Dresden.
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Message-ID: <426man$ehq@bonnie.tcd-dresden.de>
References: <418r3m$9c6@trauma.rn.com> <41rqk7$2oj@mailhub.hcl.com> <41sjek$rtu@bonnie.tcd-dresden.de> <420b97$2rr@overload.lbl.gov>
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Xref: euryale.cc.adfa.oz.au comp.periphs.scsi:36785 comp.os.linux.hardware:14918 comp.unix.bsd.freebsd.misc:5531 comp.os.linux.setup:19204
Jin Guojun[ITG] <jin@gracie.lbl.gov> wrote:
>>> How does the NCR controller compares to the Adaptec AHA2940 PCI controller?
>>>The price difference is one, but what about performance?
>>
>>I remember some figures that claimed the AHA2940 could get about 20 %
>>more than the NCR.
>
>This information may apply to FreeBSD 1.x. NCR has not disadvantage than
>any other SCSI-2 controllers. All Pentinum-100 BIOS should be support it.
Sorry, i don't grok it. In which way is this related to the BIOS?
The BIOS is not involved once FreeBSD is running.
The only limiting factor for the NCR vs. the AHA2940 is probably that
it's operating on the host RAM instead of local controller RAM.
--
cheers, J"org private: joerg_wunsch@uriah.heep.sax.de
http://www.sax.de/~joerg/
Never trust an operating system you don't have sources for. ;-)