Subject: Re: RFC: est.c driver synced with OpenBSD
To: None <>
From: Thomas E. Spanjaard <>
List: tech-kern
Date: 09/02/2006 20:21:50
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Joel CARNAT wrote:
> my Dell Latitude C610, which is supposed to have a Pentium Mobile does
> not seem to be recognised by the est.c code.
> Furthemore, if I power the laptop on AC, NetBSD kernel give a 1Ghz
> kernel speed ; if I power it on battery only, NetBSD kernel gives a
> 700MHz kernel speed. I suppose this mean the BIOS does some cpu scaling
> but I'm not sure what it means when it comes to OS.
> cpu0: "Intel(R) Pentium(R) III Mobile CPU      1000MHz"

This CPU doesn't have Enhanced Speedstep Technology (est), just 
Speedstep. I reckon the BIOS can control the speed based on ACPI or APM 

         Thomas E. Spanjaard

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