On Monday 14 Oct 2002 11:23 am, J. Greenlees wrote:
> Thierry Vignaud wrote:
> snip
>
> > also, the 486sx (at least the first ones) did has a coprocessor; it
> > was disabled but was still there (though i don't rember if it was
> > missing pins or some silicon hack).
>
> actually, it was a bad bit of circuit if I remember correctly, the co
> pro was completely un-usable because of it and the cpu was a lower price
> for that reason.
if I remember rightly it was a batch of  i486dx's that had this problem, the 
fpu just couldnt add up properly given the right set of circumstances and 
intel had to change all the affected chips!

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