When I was sold the AMD K5, and Cyrix 686 processors, I was lead to
believe that they were instruction set compatible with the Intel Pentium,
apart from four rarely used instructions relating to Intel
Pentium pipeline management. (I never got round to looking at these.)
However, some of my computers are now producing errors related to
invalid instructions in vendor supplied binaries, that are supposed to be
compatible with 486 machines. (In particular, the Debian supplied Linux
kernel is affected.)
I could do with knowing what instructions are sup****ted and not
sup****ted on the AMD K5 and the Cyrix 686 each of the three chips,
because I suspect that there are differences outside the realm of
pipeline management.
Mark.
--
Mark Hobley,
393 Quinton Road West,
Quinton, BIRMINGHAM.
B32 1QE.
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