Pll

[Vanos_b]

Does anyone know how to program the clock generator/PLL from the motherboard (the way CPUFSB modifies the frequency)? And if you're wondering I need that for underclocking a laptop with cooling problems (hence the impossibility -at least for now- of changing the cooler).

Best regards.

[Pyscrow]

If its a PII odds on it will require a jumper setting to be changed on the Mother Board. Good luck finding jumper settings info for a PII laptop!

[avih]

CPU Eat 'n' Cool (http://www.kiki-koko.com/public/sitesage/bin/site/wrappers/default.asp?pane_2=content-home.dat) should do what u need.

[Vanos_b]

Thanks for your replies.
I'm trying CPU Eat'n'Cool right now and for the moment it seems that's working. I've been using CPUCool but it didn't always worked.
I was interested to change the FSB by myself because with CPUCool/CPUFSB when changing it, withought reading from the PLL first, it was freezing the PC (if trying to change the FSB more than once). But after writing to them they were kind enough to send me a version that was reading from the PLL before writing the new settings ( version "7.2.11 Test" - I feel so honored :p :thanks: ), but this solved the problem only partialy because it still locks if I'm trying to change the frequency on full CPU load.

...Now CPU Eat'n'Cools runs for a quarter an hour and it didn't locked yet so it should be ok...
As a sidenote: the laptop it's a P3/733, and the title of the thread is PLL, but although I've written it all in uppercase the LL is showed in lowercase.

I don't think it has any jumpers, and the bios setup is the worst I've ever seen (Insyde Software MobilePRO and the laptop is Movita Fuego 218), so... (no chance on this side)
Although I don't really need to do this FSB setting by myself now, it's still an interesting issue that I would like to find out more, so if anyone has any idea... Untill now I found out that the SMBus adress is 0x1000 and my PLL (ICS 9248-146) is on port 0x69... Next?

Best regards.

[snn47]

Since I had similar lockups after changing my FSB from 100MHz/100MHz/33,3MHz (FSB/MEM/PCI) to 66,6/66,6/33,3 I modified my Clk-Gen to allow HW-pin-selection on boot on my MSI-KT2-Combo.

I verified that the Clk-gen operates as selected with an oscilloscope and frequency-counter.

Since 66,6MHz is not to fast there has to be something in the BIOS that locks my board, not CPU-Cool or the Hardware. This is very unfortunate since my KT266A works stable at 166,6MHz, but I don't want to stress my PCI-devices since PCI-clk is >40MHz.

So I guess someone doesn't want us to use the even PCI-dividers to get a stable system.