K6 probs... :(

Matthew Kirkwood (weejock@ferret.lmh.ox.ac.uk)
Sat, 10 Jan 1998 17:52:15 +0000 (GMT)


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?

Matthew.

-- 
Matthew Kirkwood  |  Mail:  matthew.kirkwood@lmh.ox.ac.uk
LMH JCR,          |  Web:   http://www-jcr.lmh.ox.ac.uk/~weejock/
Oxford OX2 6QA,   |  
England.          |  "To do things badly is a basic human right"