Driver Update: VIA Service Driver Beta 1.0

Spice writes: “VIA Hardware has the news about the problems with Detonator 23.11’s and WinXP”:

This looks like an interesting update for owners of motherboards with VIA chipsets and nVidia video cards.

This patch detects the 0305, 3099, 3102, and 3112 (KT133x, KT266x, VT8662, and KLE133) *only*. On these chipsets, it will patch register 55 in the Northbridge, which will supposedly switch off a Memory Write Queue timer. In the KT133A datasheet, register 55 is “reserved”. But-yikes! – in the KT266, the documented MWQ register is register 95, not 55. Register 55 contains unrelated DDR timing adjustments and could actually be dangerous to program. For this reason, I do not recommend installing this driver on the KT266x chipsets until VIA examines this issue. For now, use WPCREDIT and set bits 5, 6, and 7 to zero in register 95 instead