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Does MUL/IMUL/IDIV result negation trick (via REP prefix) work on later 8086-compatible Intel CPUs (e.g. 80286, 80386 etc)?

I have just learned from dreNorteR on VCF that it no effect on a 286 but has a different, unexpected, and useful effect on a 186! http://www.vcfed.org/forum/showthread.php?76657-8088-8086-mi...