Jan Vicherek <[EMAIL PROTECTED]> writes:
> I heard that i586-optimized code still runs on i486. The only difference
> is that it is slower. Is that true ?
It depends if it is optimized (e.g. scheduled) to perform better on
pentium-class processors; or if it uses instructions first introduced with
the pentium processor, in which case the programs would stop with a
message "Invalid instruction".
We compile our programs specifying that the instruction set to be used is
"pentium". Therefore, if gcc takes advantages of this option (which I
don't know, but I think yes) code produced would not run on i486.
> If not, what do I need to do to install Mdk8 on an i486 ? I presume that
> there would be more of us that would really welcome this, so what do *we*
> need to do to install Mdk8 on an i486 ? [ I only care whether Mdk8 *runs*
> on i486, I don't care whether it is *optimized* for i486. ]
What you need? Oh, nearly nothing: recompile the whole distribution and
the kernel specifying a different instruction set. Guess why we don't
provide this since 7.1...
--
Guillaume Cottenceau - http://us.mandrakesoft.com/~gc/
