linuxbios can't identify celeron 850MHz

James Alton jalton at
Mon Nov 4 04:43:01 CET 2002

It seems that your 850mhz celeron chip should be running at a 100Mhz bus
(8.5x clock multiplier. 8.5*100mhz = 850Mhz) instead, you are feeding it
66Mhz. (8.5*66 = 560Mhz) You can fix this by talking to your clock chip
and telling it to change the clock speed. (Which involves finding your
clock chip on the motherboard, looking up to see if there's already code
for it, or if you have to hack out code yourself using spec sheets. lots
of fun.)

-James Alton
-jalton at

>Hi, everyone,
>  I met one problem, linuxbios can't identify celeron
>850Mhz. i'm using linux-kernel 2.4.18, cvs-freebios,
>winfast6300. when using linuxbios boot, linux can't identify
>celeron 850MHz, it shows the cpu is at 560MHz.
>when using normal bios boot, linux can identify
>celeron 850MHz, it shows the cpu is at 850MHz.
>what's the problem, please help me.
>         thanks
>          zhu

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