title: Who executes POST? BIOS microcontroller or CPU?
body: <p>What piece of hardware executes firmware during POST?</p>
  
  <p>BIOS microcontroller or CPU?
  BIOS microcontroller is executing the firmware on ROM which has some configuration on CMOS (like a RAM). But during POST who is executing the firmware that is checking himself?</p>
  
  <p>After POST, BIOS must "tell" CPU to assign instruction pointer to some address on memory right? that's how it jumps on startup?</p>