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SubjectRe: K6 probs... :(
On 10 Jan 98 at 17:52, Matthew Kirkwood wrote:

> Hi,
>
> Having just replaced my, now creaky, P120 with
> a K6-200, I'm unable to boot Linux. My initial
> experimentations with RAM timings, etc, had no
> luck, but I have been able to get things up (and
> seemingly stable) at 166Mhz. Have I been sold
> a duff CPU?
>
> Box: K6-200 (now @166 :( ), 430HX mobo, 64Meg EDO
> RAM, some other random stuff...
>
> I've tried various kernels:
> 2.1.78 - no cigar
> 2.0.33 - ditto
> 2.0.33 compiled for 386 - still no luck
>
> I believe that the K6 bug affects only systems with
> >32meg installed, so I've tried all of the above with
> mem=32M. Should that be enough, or should I find some
> old SIMMs, and try with only 32M installed? Also, is
> the bug fixed in stepping 2 anyway?
>
> The RAM seems OK (well, it has run for > 6 months on
> a P120), but should certainly be rock solid at the
> timings I've tried (70ns with maximal wait states, etc).
>
> /proc/cpuinfo:
> processor : 0
> cpu family : 5
> model : AMD-K6tm w/ multimedia extensions
> vendor_id : AuthenticAMD
> stepping : 2
> fdiv_bug : no
> hlt_bug : no
> sep_bug : no
> f00f_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 1
> wp : yes
> flags : fpu vme de pse tsc msr mce cx8 mmx
> bogomips : 331.78
>
>
> Any ideas?

Well, I haven't paid much attention to any K6 bugs in Linux, but I'm
assuming it's a hardware thing. :) According to my motherboard
manual you should be running at 2.9V for a K6-200. Maybe you're a
litte lower, or maybe too high? Then 66Mhz bus w/ a x3 internal
multiplier...

Good luck,

-= shane.anderson@infrasol.com ======== Infrared Solutions, Inc. =-

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