shadow RAM range like Chips&Tech SCAT
  currently all seem to use A000-BFFF for SMM purposes

hardware clean & powerful like Intel 824X0
  now if i think about that L2 cache+MTRR crap...

dokumented like OPTI/SIS
  I can no longer find documentations at SiS

Not to talk about where i should search for NVIDIA, VIA,..
documentations
