Date: Thu, 22 Aug 1996 17:09:08 +0930 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: gibbs@freefall.freebsd.org (Justin T. Gibbs) Cc: msmith@atrad.adelaide.edu.au, richard@pegasus.com, freebsd-hardware@FreeBSD.ORG Subject: Re: SCSI again: Asus SC200 vs. Adaptec 2940 ... Message-ID: <199608220739.RAA14245@genesis.atrad.adelaide.edu.au> In-Reply-To: <199608220743.AAA24607@freefall.freebsd.org> from "Justin T. Gibbs" at Aug 22, 96 00:43:47 am
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Justin T. Gibbs stands accused of saying: > > >The aic7770 appears to handle heavier loads better; this may be because it > >keeps its program in local memory (does it?) rather than needing to > >fetch an opcode every 1us (as the 53c810 does) across the PCI bus. It > >may just be due to better device design. > > It does have the entire program in ram as do some of the newer NCR (or > should I say symbios?) cards. Hmm, Symbios is the name the cards go under; I tend to be more interested in the chip on the card. NCR-based just naturally contracts for me - perhaps I'm just too slack 8) > > All through > >the first quarter or so of this year Justin was struggling with the > >'aic' driver, eventually getting it pretty well right; in the same > >period the 'ncr' driver was rock-solid. > > That's 'ahc' not 'aic'. I haven't rewritten the 'aic' driver yet. > 8-) Oops, freudian slip there. 8) Now my Jaz has arrived, I keep wondering if the 'aic' driver will work well enough for me to risk buying a SlimSCSI to drive it off my notebook... > Justin T. Gibbs -- ]] Mike Smith, Software Engineer msmith@atrad.adelaide.edu.au [[ ]] Genesis Software genesis@atrad.adelaide.edu.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control (ph/fax) +61-8-267-3039 [[ ]] Collector of old Unix hardware. "Where are your PEZ?" The Tick [[
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