In Tasm instruction like wbinvd could turn on by the statement .586p what's equivalence of that in GCC to ensbale special CPU instrcutions? thanks -- View this message in context: http://www.nabble.com/Howto-enable-special-CPU-instructions-in-assembly-tf2229605.html#a6179957 Sent from the gcc - Help forum at Nabble.com.