> > They do not automatically lock the bus. They will lock the bus with the > > explicit LOCK prefix, and BTS is typically used for an atomic read/write > > operation.
> Thanks Rick. > I'll go back to using them. > I'm optimizing mainly for size. > The comment should perhaps be amended. > The "since they enforce atomic operation" part seems wrong. Np. For citation, see here (page 166). http://www.intel.com/Assets/PDF/manual/253666.pdf - Rick