On Tue, Nov 26, 2002 at 09:55:00AM -0000, Leopold Toetsch wrote: > +B<MAP[n]> > + > +The I<n>th integer or floating processor register, mapped in this section. > + > +Note: The register with the physical number zero can not be mapped. > + > +=begin unimp > +
Why can't it be mapped? Fundamental implementation constraints (using zero to flag something else?) This will impact performance, although whether it's not actually measurable, slight, or moderate, I don't know. ["patches welcome"?] Nicholas Clark
