Back in the day (on the PDP-10) the microcode would be loaded from disk or tape, after which the main processor would then start. This let the hackers for the Incompatible Timesharing System have their own microcode version, which added more features compared to the one provided by DEC. It's too bad this ability seems to be lost on modern computers. Please bring back free microcode that can be modified as needed, and then reloaded from scratch into the CPU. :)