Re: UDMA33 & SIS PCI IDE Controller & Win2k

Re: UDMA33 & SIS PCI IDE Controller & Win2k

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Posted by Erik on September 23, 2001 at 22:37:15:

In Reply to: Re: UDMA33 & SIS PCI IDE Controller & Win2k posted by Adam on July 08, 2001 at 22:52:38:

Make sure when purchacing a Motherboard that has the VIA chipset, buy the ones with the 686A southbridge chip instead of the 686B. the 686B has a known bug that will not allow UDMA in Win2K. The 686B was designed to enable ATA100 instead it is stuck in PIO under Win2K. The 686A only allows up to ATA66 but that is FAR better than 16.6mb transfer. Also by default Win2k will only transfer at UDMA 33. You have to manually edit the registry for UDMA 66, OR download the best tweaking utility, XTEQ. Xteq has a section where you can tweak your Hardware settings such as enabling UDMA66.

SIS has the same problem as the VIA 686B southbridge chip, it wont allow UDMA under Win2k. I am trying to look for a patch on SIS's web site, but its been down for the past few days. Anyone have the patch? Would you email it to me? Thx...

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