Err, shouldn't that be "80521", not "80686"?

(The photos of Pentium Pro chips I've seen have something like
"80521EX-166" stamped on them: likewise the "80586" is actually the
80501 (P5) or 80502 (P54) though you'll never hear that from Intel's
marketroids.)

-- 
Scott Telford, Edinburgh Parallel Computing Centre,        <s.telford@ed.ac.uk>
University of Edinburgh, Mayfield Rd, Edinburgh, EH9 3JZ, UK.(+44 131 650 5978)
 "Is it a virus, a drug, or a religion?" "What's the difference?" (Snow Crash)