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Plus Hardcard II XL dip switch settings

Discussion in 'Electronic Repair' started by [email protected], Apr 14, 2007.

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  1. Guest

    There is a row of eight dip switches on this board. I got it to work
    in an old system I'm working on by changing what I think was the IRQ
    setting. However it seems to be write protected and I can't figure it
    out. Does anyone have any documentation on this board? Thanks. Lenny
    Stein, Barlen Electronics.

  2. Is that the old XT compatible eight bit ISA hard drive on a card? If
    it is, it will only work on an XT motherboard.

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
  3. Franc Zabkar

    Franc Zabkar Guest

    I have been successful in determining the IRQ jumpers for old ISA
    internal modems by following the jumper pins back to the ISA edge
    connector. Maybe you could do the same?

    Otherwise I suspect that one or more of your jumpers configure your
    card for PnP mode, in which case the OS or BIOS should then
    automatically detect and assign the resources.

    You may also find that one or two jumpers select the IDE port, eg
    primary, secondary, tertiary, quaternary.

    I'd look for a datasheet for the card's IDE controller chip. In fact
    if you can tell us which chip it is (Winbond? UMC?), I may be able to
    find the jumper settings for a card that uses the same chip.

    - Franc Zabkar
  4. Franc Zabkar

    Franc Zabkar Guest

    This MS tech note talks about installing the card on a 6MHz AT system:

    - Franc Zabkar

  5. The controllers and interfaces on Hardcards were too slow for most
    computers. I couldn't use them reliably on 10 or 12 MHz XTs, unless
    turbo was disabled and the computer had to run at the original 4.77 MHz
    CPU clock rate.

    Trying to use them on faster computers is a crap shoot. I just put
    old drives in a slow machine and used interlink between the parallel
    ports to copy the data to a faster drive. I've also seen early EIDE
    drives that were too slow to get ready for the buss that I had to turn
    on the extended memory test in the BIOS to slow the computer's boot
    time. i saw this for a couple years, till the older, slower drives were
    too small to bother with moving to a customer's new computer.

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
  6. Franc Zabkar

    Franc Zabkar Guest

    In my experience Quantum's 105AT Pro Drives were very popular and very
    reliable (I may even have one in my cupboard). I don't know if this
    model formed the basis for the Hardcards, but here is a news item from

    "These new Hardcards, called the Hardcard II-XL 50 and the Hardcard
    II-XL 105, are designed for 80286- and 80386-based PC's."

    "The new Hardcard II-XL drives ... have a speed rating of nine
    milliseconds, ... which in the world of disk drives is breathlessly
    fast. Plus calls them the fastest 3.5-inch hard disk drives in the

    "The Hardcards seem especially well suited for people who are
    upgrading an older AT-class, 80286-based PC that has either no hard
    disk or a 20-megabyte unit. As companies move to the newer 80386-based
    and 386SX computers, 'a lot of 286's have found their way home,' said
    Crawford Del Prete, an analyst with the International Data Corporation
    of Framingham, Mass. 'When it comes time for upgrade, instead of just
    bagging the old computer and getting a new one, put a Hardcard II-XL
    in it.'"

    - Franc Zabkar

  7. What is the fastest motherboard you've used it in? I think that I
    still have one or two hardcards in storage, but I'm too ill to go look
    for them and test their buss speed.

    BTW, I had a "386 computer on a card" that I pulled from an original
    256 K IBM PC. It took control of the buss after the computer booted,
    and ran newer software written for the 386, but it was so slow it was
    nearly useless.

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
  8. Franc Zabkar

    Franc Zabkar Guest

    I've never used Hardcards, I've just used the Quantum LP series drives
    of that era. I still have a 127AT and a 210AT HD in my cupboard. IIRC
    I used to install them in 486DX and SX machines. The interface was
    either a 16-bit ISA or 32-bit VLB IDE controller card, or motherboard

    BTW, I have experienced the same problem that you referred to, namely
    a long spin-up time for certain HDs, although I can't say which brands
    or models. The workaround was the same, ie I slowed down the POST by
    enabling a full memory test.

    - Franc Zabkar
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