Just confirmed this works on the KT333 as well. Aaron
On Tuesday 30 July 2002 03:00 am, Gary Jennejohn wrote: > Michael Nottebrock writes: > > The following is an OpenPGP/MIME signed message > > created by Enigmail/Mozilla, following RFC 2440 and RFC 2015 > > --------------enig8A086DA17DCB77CC40984CC4 > > Content-Type: text/plain; charset=us-ascii; format=flowed > > Content-Transfer-Encoding: 7bit > > > > I've been wondering lately why my AthlonTB runs at a quite high > > idle-temperature and I came across this page: > > > > http://vcool.occludo.net/VC_Theory.html > > > > Does someone feel like getting something similar into our kernel? > > If you have a VIA KT266A chipset then you can do something like this: > > # turn on HALT bit in register 0x95 of the KT266a -> CPU runs much cooler > # NOTE: the register had 0x1c when I checked it > echo Enable halt bit in KT266A > /usr/sbin/pciconf -w -b pci0:0:0 0x95 0x1e > > which I have in /etc/rc.local. My Athlon runs about 15 C cooler with > this. Bit 1 of register 0x95 controls idling of the CPU. > > Here's a step-by-step description: > > Do the following as root: > 1) pciconf -l -v > this lists all the PCI chipsets found at boot time. I see > > agp0@pci0:0:0: class=0x060000 card=0x30991106 chip=0x30991106 rev=0x00 > hdr=0x00 > vendor = 'VIA Technologies Inc' > device = 'VT8366/A Apollo KT266/A,KT333 CPU to PCI Bridge' > class = bridge > subclass = HOST-PCI > > So I have a KT266(A) at pci0:0:0 > > 2) pciconf -r -b pci0:0:0 0x95 > > 0x1c > > Bit 1 isn't set > > 3) pciconf -w -b pci0:0:0 0x95 0x1e > > turns on bit 1. > > > --- > Gary Jennejohn / [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] > > > > To Unsubscribe: send mail to [EMAIL PROTECTED] > with "unsubscribe freebsd-current" in the body of the message To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
