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Xref: sserve comp.os.386bsd.questions:5459 comp.periphs.scsi:14267 Newsgroups: comp.os.386bsd.questions,comp.periphs.scsi Path: sserve!newshost.anu.edu.au!munnari.oz.au!news.Hawaii.Edu!ames!elroy.jpl.nasa.gov!swrinde!cs.utexas.edu!uunet!emba-news.uvm.edu!sadye.emba.uvm.edu!wollman From: wollman@sadye.emba.uvm.edu (Garrett Wollman) Subject: Re: CDs and SCSI Message-ID: <1993Sep28.185031.5699@emba.uvm.edu> Sender: news@emba.uvm.edu Organization: University of Vermont, EMBA Computer Facility References: <CE29yI.IKt@festival.ed.ac.uk> Date: Tue, 28 Sep 1993 18:50:31 GMT Lines: 20 In article <CE29yI.IKt@festival.ed.ac.uk>, Richard Tobin <richard@castle.ed.ac.uk> wrote: >What is the difference between these adaptors and the supported >ones? Some of them aren't SCSI at all. Many of them are not able to perform SCSI disconnect, so that only one I/O operation can take place at a time (imagine trying to do a backup under those situations). I suspect some of them may actually have deliberate limiting firmware in them to keep them from competing with the same manufacturer's higher-quality products. Many of them either can't perform DMA, or are so slow as to be useless in a multitasking environment. -GAWollman -- Garrett A. Wollman | Shashish is simple, it's discreet, it's brief. ... wollman@emba.uvm.edu | Shashish is the bonding of hearts in spite of distance. uvm-gen!wollman | It is a bond more powerful than absence. We like people UVM disagrees. | who like Shashish. - Claude McKenzie + Florent Vollant