re: [preview] VIA IDE 4.0 and AMD IDE 2.0 with automatic PCI clock detection

From: Philip Langdale (philipl@mail.utexas.edu)
Date: Fri Feb 09 2001 - 17:42:52 EST

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    Vojtech,

    I've tried out your new via driver and it
    appears to have solved the problem with
    the mis-detected ls-120 drive, but the ata66
    drives are still being run at 33.

    More interestingly, the pci-clk calculations
    seem to be returning badly off values.

    My motherboard is a kt133a+686b btk7a from abit.

    When I set the FSB to 133 with PCI=133/4=33 the
    timing code returns 43mhz.

    when I set the FSB to 100 with PCI=100/3=33 then
    it returns 42mhz.

    These are scarely different from the nominal values.
    I didn't observe anything bad in the few minutes
    I was running like this, but right now I've hacked
    the driver back to a hardcoded 33.

    What should I do next?

    --phil
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