OT: getting up to udma 66 speed

[gcrimp@vcn.bc.ca]

Hi,

My abit vt6x4 motherboard "support[s] up to 4 udma 33/66 devices".  Without
kernel boot arguments, it defaults to 33MHz bus speed.  I'm trying to figure
out how to get this working (or maybe I already have:)

Without any arguments, dmesg would give me a message something like:
(line has wrapped.)


   "ide: Assuming 33MHz system bus speed for PIO modes; override with
   idebus=xx"



Adding idebus=66 to the boot config, dmesg tells me:


   "ide: Assuming 66MHz system bus speed for PIO modes"



Great, but a few lines down in dmesg, I see:



   "VP_IDE: Use ide0=ata66 if you want to force UDMA66/UDMA100."




But when I do add "ide0=ata66" to the boot config, I get from dmesg:
(second line has wrapped)



   "ide: Assuming 66MHz system bus speed for PIO modes"
   ...
   "VP_IDE: User given PCI clock speed impossible (66), using 33 MHz
   instead."
   "VP_IDE: Use ide0=ata66 if you want to force UDMA66/UDMA100."




Anything else I can try to get the most from my mother board ?

Thanks,

GC