From owner-freebsd-hardware Thu Aug 22 00:55:47 1996 Return-Path: owner-hardware Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id AAA25439 for hardware-outgoing; Thu, 22 Aug 1996 00:55:47 -0700 (PDT) Received: from genesis.atrad.adelaide.edu.au (genesis.atrad.adelaide.edu.au [129.127.96.120]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id AAA25434 for ; Thu, 22 Aug 1996 00:55:39 -0700 (PDT) Received: from msmith@localhost by genesis.atrad.adelaide.edu.au (8.6.12/8.6.9) id RAA14245; Thu, 22 Aug 1996 17:09:09 +0930 From: Michael Smith Message-Id: <199608220739.RAA14245@genesis.atrad.adelaide.edu.au> Subject: Re: SCSI again: Asus SC200 vs. Adaptec 2940 ... To: gibbs@freefall.freebsd.org (Justin T. Gibbs) Date: Thu, 22 Aug 1996 17:09:08 +0930 (CST) Cc: msmith@atrad.adelaide.edu.au, richard@pegasus.com, freebsd-hardware@FreeBSD.ORG In-Reply-To: <199608220743.AAA24607@freefall.freebsd.org> from "Justin T. Gibbs" at Aug 22, 96 00:43:47 am MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hardware@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk 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 [[