Path: utzoo!attcan!uunet!mailrus!ncar!tank!msuinfo!netnews.upenn.edu!cps3xx!usenet
From: usenet@cps3xx.UUCP (Usenet file owner)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Sloppy read/write error handling
Keywords: It doesn't work right
Message-ID: <7136@cps3xx.UUCP>
Date: 6 Apr 90 12:59:53 GMT
References: <556@bilver.UUCP> <15840@estelle.udel.EDU> <10595@cbmvax.commodore.com> <15878@estelle.udel.EDU> <10624@cbmvax.commodore.com>
Reply-To: dailey@cpsin1.cps.msu.edu (Chris Dailey)
Organization: Engineering, Michigan State Univ., E. Lansing
Lines: 23

In article <10624@cbmvax.commodore.com> daveh@cbmvax (Dave Haynie) writes:
>Only some devices actually need to implement bad block mapping;
>SCSI and other already do it below the protocol level.  That alone
>should be a clue to the fact that I'm not the only one who thinks
>that bad block mapping is a low-level problem.  

But SCSI devices have their own controller, which performs all of the
error checking, etc. on the prepping and then just ignores bad areas of
the HD (i.e. they are not counted).  On the Amiga floppy system,
wouldn't the Amiga device driver be responsible for performing this (or
similar) function SINCE THERE IS NO SCSI CONTROLLER FOR THE DRIVE???

>Dave Haynie Commodore-Amiga (Systems Engineering) "The Crew That Never Rests"
>   {uunet|pyramid|rutgers}!cbmvax!daveh      PLINK: hazy     BIX: hazy
>                    Too much of everything is just enough
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-Agreed.  :)
    __
   /..\
   ('`)  Chris Dailey
  /_/\_\  dailey@cpsin1.cps.msu.edu
 |______|
 (_ ][ _)
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