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    SubjectUDMA(66) drive coming up as UDMA(33)?
    I'm trying to get my hard drive to use UDMA/66.  I'm thinking the cable
    is not being detected. When the HPT366 bios is set to UDMA 4; using
    hdparm -t, I get a transfer rate of 19.51 MB/s. When the HPT366 bios is
    set to PIO 4 the transfer rate is the same. Is this normal for a UDMA/66
    drive? What makes me think something is wrong is that the log says

    "ide2: BM-DMA at 0xbc00-0xbc07, BIOS settings: hde:pio" <-- PIO?

    and

    "hde: 27067824 sectors (13859 MB) w/371KiB Cache, CHS=26853/16/63,
    UDMA(33)" <--- UDMA(33)? shouldn't it be UDMA(66)?

    Any ideas what might be wrong? Possible bug?


    Hardware:
    Abit BE6 Motherboard with HPT366 controller
    Quantum Fireball KA 13.6 UDMA/66 HD
    80 pin connector
    Linux Partition is on /dev/hde2

    Software:
    Redhat 7.0
    Kernel 2.4.3 (non-modified)

    Use multi-mode by default = Y
    CMD640 chipset bugfix/support = Y
    RZ1000 chipset bugfix/support = Y
    Generic PCI IDE chipset support = Y
    Shareing PCI IDE interrupts support = Y
    Generic PCI bus-master DMA support = Y
    Use PCI DMA by default when available = Y
    HPT366 chipset support = Y
    Intel PIIXn chipsets support = Y
    PIIXn Tuning support = Y
    IGNORE word93 Validation BITS = Y



    My Log:

    Uniform Multi-Platform E-IDE driver Revision: 6.31
    ide: Assuming 33MHz system bus speed for PIO modes; override with
    idebus=xx
    automount[415]: starting automounter version 3.1.6, path = /misc,
    maptype = file, mapname = /etc/auto.misc
    PIIX4: IDE controller on PCI bus 00 dev 39
    PIIX4: chipset revision 1
    PIIX4: not 100%% native mode: will probe irqs later
    ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:pio, hdb:pio
    ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:pio
    HPT366: onboard version of chipset, pin1=1 pin2=2
    HPT366: IDE controller on PCI bus 00 dev 98
    PCI: Found IRQ 11 for device 00:13.0
    PCI: The same IRQ used for device 00:0b.0
    PCI: The same IRQ used for device 00:13.1
    HPT366: chipset revision 1
    HPT366: not 100%% native mode: will probe irqs later
    ide2: BM-DMA at 0xbc00-0xbc07, BIOS settings: hde:pio, hdf:pio
    HPT366: IDE controller on PCI bus 00 dev 99
    PCI: Found IRQ 11 for device 00:13.1
    PCI: The same IRQ used for device 00:0b.0
    PCI: The same IRQ used for device 00:13.0
    HPT366: chipset revision 1
    Initializing random number generator: succeeded
    HPT366: not 100%% native mode: will probe irqs later
    ide3: BM-DMA at 0xc800-0xc807, BIOS settings: hdg:pio, hdh:pio
    hdc: Pioneer DVD-ROM ATAPIModel DVD-113 0114, ATAPI CD/DVD-ROM drive
    hdd: IOMEGA ZIP 100 ATAPI, ATAPI FLOPPY drive
    hde: QUANTUM FIREBALLP KA13.6, ATA DISK drive
    ide1 at 0x170-0x177,0x376 on irq 15
    ide2 at 0xb400-0xb407,0xb802 on irq 11
    hde: 27067824 sectors (13859 MB) w/371KiB Cache, CHS=26853/16/63,
    UDMA(33)
    hdc: ATAPI DVD-ROM drive, 512kB Cache, UDMA(33)
    Uniform CD-ROM driver Revision: 3.12
    hdd: 98304kB, 96/64/32 CHS, 4096 kBps, 512 sector size, 2941 rpm



    Thank you,

    David St.Clair
    dstclair@cs.wcu.edu


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