Hi,
   we just got some machines with Gigabyte GA-6VX7B-4X Motherboard's and I'm 
seeing a problem with the IDE controller.  The motherboard is supposed to be 
Ultra/100 capable but NetBSD-1.5R (built yesterday) reports it as 
only Ultra/33 capable and attempts to access the disk using Ultra-DMA mode 2 
(even if Ultra/100 support isn't there yet I'd expect it to do Ultra/66)
and seems to have problems with that falling back to Ultra-DMA mode 1.
Any suggestions?

dmesg output follows.

cheers
mark

NetBSD 1.5R (MCS_WORKSTATION) #0: Wed Jan 31 08:13:05 NZDT 2001
    mark@turakirae.mcs.vuw.ac.nz:/src/work/src/sys/arch/i386/compile/MCS_WORKSTATION
cpu0: Intel Pentium III (Coppermine) (686-class), 731.51 MHz
cpu0: I-cache 16K 32b/line 4-way, D-cache 16K 32b/line 2/4-way
cpu0: L2 cache 256K 32b/line 8-way
cpu0: features 383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR>
cpu0: features 383f9ff<PGE,MCA,CMOV,FGPAT,PSE36,MMX,FXSR,XMM>
total memory = 127 MB
avail memory = 114 MB
using 1658 buffers containing 6632 KB of memory
BIOS32 rev. 0 found at 0xfdae0
mainbus0 (root)
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled
pchb0 at pci0 dev 0 function 0
pchb0: VIA Technologies VT82C691 (Apollo Pro) Host-PCI (rev. 0xc4)
ppb0 at pci0 dev 1 function 0: VIA Technologies VT82C598 (Apollo MVP3) PCI-AGP (rev. 0x00)
pci1 at ppb0 bus 1
pci1: i/o space, memory space enabled
vga1 at pci1 dev 0 function 0: ATI Technologies Mach64 LM (rev. 0x64)
wsdisplay0 at vga1: console (80x25, vt100 emulation)
pcib0 at pci0 dev 7 function 0
pcib0: VIA Technologies VT82C686A (Apollo KX133) PCI-ISA Bridge (rev. 0x40)
pciide0 at pci0 dev 7 function 1: VIA Tech VT82C586A IDE Controller (rev. 0x06)
pciide0: bus-master DMA support present
pciide0: Ultra/33 capable
pciide0: primary channel configured to compatibility mode
wd0 at pciide0 channel 0 drive 0: <ST310211A>
wd0: drive supports 16-sector PIO transfers, LBA addressing
wd0: 9541 MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 19541088 sectors
wd0: 32-bit data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
pciide0: primary channel interrupting at irq 14
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data
transfers)
pciide0: secondary channel configured to compatibility mode
atapibus0 at pciide0 channel 1
cd0 at atapibus0 drive 0: <SONY CDU4811, , PY0A> type 5 cdrom removable
cd0: 32-bit data port
cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
pciide0: secondary channel interrupting at irq 15
cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data
transfers)
uhci0 at pci0 dev 7 function 2: VIA Technologies VT83C572 USB Controller (rev. 0x16)
uhci0: interrupting at irq 9
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: VIA Technologie UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1 at pci0 dev 7 function 3: VIA Technologies VT83C572 USB Controller (rev. 0x16)
uhci1: interrupting at irq 9
usb1 at uhci1: USB revision 1.0
uhub1 at usb1
uhub1: VIA Technologie UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
VIA Technologies VT82C686A SMBus Controller (SMBus serial bus, revision 0x40) at pci0 dev 7 function 4 not configured
auvia0 at pci0 dev 7 function 5: VIA VT82C686A AC'97 Audio (rev 0x50)
auvia0: interrupting at irq 10
auvia0: ADS72 codec; headphone, Analog Devices Phat Stereo
audio0 at auvia0: full duplex, mmap, independent
fxp0 at pci0 dev 13 function 0: Intel i82557 Ethernet, rev 8
fxp0: interrupting at irq 5
fxp0: Ethernet address 00:02:b3:1a:d1:5e, 10/100 Mb/s
inphy0 at fxp0 phy 1: i82555 10/100 media interface, rev. 4
inphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
isa0 at pcib0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pmsi0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pmsi0 mux 0
lpt0 at isa0 port 0x378-0x37b irq 7
pcppi0 at isa0 port 0x61
midi0 at pcppi0: PC speaker
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
npx0 at isa0 port 0xf0-0xff: using exception 16
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
isapnp0: no ISA Plug 'n Play devices found
biomask eb45 netmask eb65 ttymask fbe7
boot device: wd0 
root on wd0a dumps on wd0b
root file system type: ffs
pciide0:0:0: lost interrupt
        type: ata tc_bcount: 8192 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x20
wd0e: DMA error writing fsbn 16 of 16-31 (wd0 bn 1618864; cn 1606 tn 0 sn 16), retrying
wd0: soft error (corrected)
pciide0:0:0: lost interrupt
        type: ata tc_bcount: 8192 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x20
wd0g: DMA error writing fsbn 16 of 16-31 (wd0 bn 6845344; cn 6791 tn 0 sn 16), retrying
pciide0:0:0: lost interrupt
        type: ata tc_bcount: 8192 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x20
wd0g: DMA error writing fsbn 16 of 16-31 (wd0 bn 6845344; cn 6791 tn 0 sn 16), retrying
pciide0:0:0: lost interrupt
        type: ata tc_bcount: 8192 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x20
wd0g: DMA error writing fsbn 16 of 16-31 (wd0 bn 6845344; cn 6791 tn 0 sn 16), retrying
wd0: soft error (corrected)
pciide0:0:0: lost interrupt
        type: ata tc_bcount: 8192 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x20
wd0: transfer error, downgrading to Ultra-DMA mode 1
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 1 (using DMA data transfers)
wd0g: DMA error writing fsbn 560 of 560-575 (wd0 bn 6845888; cn 6791 tn 8 sn 56), retrying
wd0: soft error (corrected)
XFree86 aperture driver version 2.0
Pentium Pro MTRR support enabled
wsdisplay0: screen 1 added (80x25, vt100 emulation)
wsdisplay0: screen 2 added (80x25, vt100 emulation)
wsdisplay0: screen 3 added (80x25, vt100 emulation)
wsdisplay0: screen 4 added (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0
Accounting started