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From: Harvey_Taylor@mindlink.bc.ca (Harvey Taylor)
Newsgroups: comp.sys.amiga.programmer
Subject: How to do SCSI Floppy AutoDiskChange?
Message-ID: <6279@mindlink.bc.ca>
Date: 14 Jun 91 20:04:33 GMT
Organization: MIND LINK! - British Columbia, Canada
Lines: 29


        I am writing to call upon the collective wisdom of the net. As you
    may have noticed in .hardware, I have a TEAC FD-235JS SCSI Floppy
    working on my system now. This is a 4M, 2M, 1M floppy which formats to
    2.88M, 1.44M & .72M. At present I have a utility to set the mode of
    the controller & a utility to do formats. To use the disk I do a SCSI
    format & then an AmigaDOS [or MSDOS] quick format.
        This is a recipe for disaster because the FFS does not notice
    diskchanges.
        When folks were using FFS floppies with 1.3 there was a program
    around called AutoDiskChange by Martin Taillefer (sp?). It worked by
    patching a trackdisk interrupt. I need a program something like this.
        My current idea is to write a daemon to do occasional Test Unit
    Ready & Mode Senses. The Sense Keys will tell me if I have a diskchange
    & if I have the correct mode set. Then I will have to send a packet to
    the handler process.
        What I wonder is...
        Is there a better way?
        -het

        PS.
        Anybody know a source of cheap 4M (barium ferrite) disks? I could
    get used to this 2.88M per floppy, but they're expensive.

    "They're selling postcards of the hanging, the circus is in town."
                                                       - R. Zimmerman
        Harvey Taylor      Meta Media Productions
        uunet!van-bc!rsoft!mindlink!Harvey_Taylor
                    a186@mindlink.bc.ca