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    SubjectRe: 2.1.111: IDE DMA disabled?
    On Mon, 27 Jul 1998, Alan Cox wrote:

    > > But currently the IDE code is relaying on the fact that the BIOS will do
    > > it nicely for Generic DMA, which is basically compleatly wrong. Most of
    > > the BIOSes don't get it right. They just put the system in the most secure
    > Almost all BIOSes get it right. Furthermore the BIOS knows what the correct
    > values are in many cases we cannot even find out or we have to do fairly
    > tricky stunts to guess. Judging by the sum collection of reports I have
    > we are also talking about almost nobody having actual problems.
    > > wired, since I'm using an very old 430HX chipset board with a 300MHz K6,
    > > where the BF2 jumper for CPU speed was missing (I have sold it my self to
    > > ground level) and the processor isn't detected corretly by the BIOS.
    > > Therefore the BIOS can't detect and set the timings correctly.
    > "I took a soldering iron to my motherboard, and now..."
    > Get real please. For the general case the BIOS is the only thing with a
    > good chance of getting the values right
    > Alan

    In real life: System Programmer at AIS AXON GmbH

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