BRM <bm_witn...@yahoo.com> [11-01-17 19:16]: > ----- Original Message ---- > > > I have two questions: > > > > 1) Do I have to enable microcode updates in the BIOS of my Crosshair > > IV Formula to activate microcodes push in the CPU by the module > > "microcode" ? (AMD Phenom X6 1090T) > > Not sure about BIOS, but the Linux Kernel you are running will certainly need > support enabled too. > > > 2) Does anyone know, what these microcodes do? They are fixes for... > > ...what? > > The Intel and AMD processors are more abstract than physical now. With i486 > and > earlier the processors were typically hard wired; hardware "bug" fixes could > not > be pushed out. > Intel's Pentium (and I don't know which AMD) started using micro-code to > program > the processor. This enabled them to push out "hardware" bug fixes for the > processors. > > So what happens is the x86 instruction (e.g. mov ax, bx) gets translated to > micro-code first, then it gets processed, and the result translated back to > the > expected instruction result - essentially, emulating the x86 instruction set > in > the processor. That's the simple version. > > So now when they discover a bug in the hardware they can push out a > micro-code > update to either fix the "hardware" (microcode) bug or work around a > hardware > (physical hardware) bug. > > Ben > >
Hi Ben, thanks for your explanation... I meant: What is fixed the uc-patches? Does "mov" only except "17" as argument...or... I searched AMD for a changelog or something like but I ound nothing... Best regards, mcc
