At 13:07 30/11/2001 , Momchil Velikov a écrit: > >>>>> "Pierre" == Pierre Muller writes: >Pierre> I found NO info on the microsoft site about the content of this array... >Pierre> the only thing I found was that it is CPU specific, so >Pierre> this might still fail for non intel processors.... > >Maybe you would want to look at "IA-32 Intel ® Architecture Software >Developer's Manual Volume 2 : Instruction Set Reference", FXSAVE insn. Thanks a lot, it does indeed seem that the ExtendedRegisters is just the layout described there. Does anyone know if the AMD and the other Pentium clones also support the same instruction and register layout in that structure? Are manuals also available for the different clones? Pierre Muller Institut Charles Sadron 6,rue Boussingault F 67083 STRASBOURG CEDEX (France) mailto:muller@ics.u-strasbg.fr Phone : (33)-3-88-41-40-07 Fax : (33)-3-88-41-40-99