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    SubjectRe: Incorrect UDMA timing on VIA vt82c596b
    On Tue, Oct 10, 2000 at 04:27:04AM -0500, Jordan wrote:
    > I have tried moving the Kenwood CDROM and the Zip between channels and
    > this works well. I would get rid of the zip if it was a viable option
    > but need it to do transfers, and the IBM has a real UDMA 66 cable and
    > upto ATA 100 capability so I wanted to take advantage of it. Thanks to
    > all that helped me out, I have been using Linux for quite some time but
    > used to have a G3 PowerPC and some of the IDE timing things are quite
    > tricky as before I was using U/W Scsi3, thanks again.

    Could you possibly try with this Andre's patch and your original setup
    (the UDMA66 drive and the ZIP on one cable)? It'd answer a couple
    questions.

    --
    Vojtech Pavlik
    SuSE Labs
    --- linux-2.4.0-t10-1-pristine/drivers/ide/ide-features.c Thu Aug 3 16:07:42 2000
    +++ linux-2.4.0-t10-1.smsc/drivers/ide/ide-features.c Tue Oct 10
    00:00:38 2000@@ -224,7 +224,8 @@
    #ifndef CONFIG_IDEDMA_IVB
    if ((drive->id->hw_config & 0x6000) == 0) {
    #else /* !CONFIG_IDEDMA_IVB */
    - if ((drive->id->hw_config & 0x2000) == 0) {
    + if (((drive->id->hw_config & 0x2000) == 0) ||
    + ((drive->id->hw_config & 0x4000) == 0)) {
    #endif /* CONFIG_IDEDMA_IVB */
    printk("%s: Speed warnings UDMA 3/4/5 is not functional.\n", drive->name);
    return 1;
    @@ -260,7 +261,7 @@
    #ifndef CONFIG_IDEDMA_IVB
    (drive->id->hw_config & 0x4000) &&
    #endif /* CONFIG_IDEDMA_IVB */
    - (drive->id->hw_config & 0x2000)) ? 1 : 0);
    + (drive->id->hw_config & 0x6000)) ? 1 : 0);
    }

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