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Thread: 62x0786

  1. #1
    Join Date
    Jun 2008
    Location
    Hamburg, Germany
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    183

    Default 62x0786

    Hello,

    I own a IBM 62x0786 MFM Controller ( Xebec ). Unfortunately I have no manual for it. There is a Dip-Switch ( S1 ) with 4 Switches 1 - 4. How I have configure that controller for a ST-412 10MB harddisk? And how I can lowlevel format the harddisk on a IBM XT-5160?

    regards
    M. Volkmann

  2. #2
    Join Date
    May 2006
    Location
    Melbourne, Australia
    Posts
    6,139

    Default

    I own a IBM 62x0786 MFM Controller ( Xebec ). Unfortunately I have no manual for it. There is a Dip-Switch ( S1 ) with 4 Switches 1 - 4. How I have configure that controller for a ST-412 10MB harddisk?
    Switches 1 & 2 configure drive 0 (C:)
    Switches 3 & 4 configure drive 1 (D:)

    0 0 = Type 13 (e.g. WD25)
    0 1 = Type 2 (e.g. ST-225)
    1 0 = Type 16
    1 1 = Type 1 (e.g. ST-412)

    Therefore, because you just have the one ST-412 drive, all you need to adjust is switches 1 and 2 - both set to ON.

    Source: Upgrading & Repairing PC's (Mueller), 5th Edition, page 763


    And how I can lowlevel format the harddisk on a IBM XT-5160?
    I assume you're speaking of the forementioned IBM 62x0786 controller in an IBM XT-5160.
    The standard G=C800:x method won't work on that card.

    You can use the 'IBM Advanced Diagnostics Disk'.

    You can use SpeedStor 6.03 - available from http://members.dodo.com.au/~slappanel555/software.htm
    On running, choose 'ManualSetup' then 'Initialize' then 'StandardInit'.

    In the following earlier thread, some other alternatives are discussed: http://www.vintage-computer.com/vcfo...ad.php?t=10112

    In case you are unaware, the drive needs to have warmed up before you low-level format. 10 minutes should be enough time.

  3. #3
    Join Date
    Jun 2008
    Location
    Hamburg, Germany
    Posts
    183

    Default

    Today I have used the SpeedStor-Tool. It works fine with my IBM-Controller and ST-412 harddisk.

    Thanks!

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